Electrothermal device, electrothermal detection system and method for adsorption factor and adsorption activation energy

Abstract

This specification provides an electrothermal detection system and method for an electrothermal device, adsorption factor, and adsorption activation energy. The method includes: adjusting the power of a power supply with adjustable output power, and detecting the temperature of a conductive porous material in real time; when the temperature of the conductive porous material reaches a preset temperature and remains stable, connecting the pipeline in the adsorbent gas path unit that is compatible with the phase state of the adsorbent to be tested at room temperature, purging the conductive porous material, and starting the adsorption test; detecting the gas flowing through by a signal detector, obtaining and recording the detection signal data; calculating the adsorption factor of the conductive porous material based on the recorded detection signal data; and calculating the electrothermal adsorption activation energy based on the adsorption factor of the conductive porous material. The above scheme can accurately determine the adsorption factor and electrothermal adsorption activation energy of the conductive porous material under the action of electric current, thereby accurately determining the true adsorption performance of the conductive porous material under the action of electric current.

Description

Technical Field

[0001] This specification relates to the technical field of new material related services and new material detection, and specifically to an electrothermal device, an electrothermal detection system and method for adsorption factors and adsorption activation energy. Background Art

[0002] Porous materials are materials with voids or pores. The pore structure of porous materials can be categorized into three types: macropores, mesopores, and micropores. Macropores have pore diameters greater than 50 nm, mesopores range from 2 nm to 50 nm, and micropores are less than 2 nm. Porous materials offer superior separation, adsorption, and catalytic properties due to their large specific surface area and pore volume. Consequently, porous materials are widely used in catalysts, adsorbents, separation membranes, biosensors, and other fields.

[0003] Currently, when porous materials are used in catalytic reactions and adsorption separations, their adsorption capacity is a key factor influencing process efficiency. To accurately determine the adsorption capacity of porous materials, adsorption activation energy measurements are generally used. However, existing methods employ external heating and are performed in the absence of an electric field. This method fails to accurately reflect the porous material's true adsorption performance under current conditions.

[0004] There is currently no effective solution to how to truly reflect the adsorption performance of porous materials under current conditions. Summary of the Invention

[0005] The purpose of this application is to provide an electrothermal device, an electrothermal detection system and method for adsorption factor and adsorption activation energy, so as to accurately determine the adsorption performance of porous materials under the condition of electric current.

[0006] The present application provides an electrothermal device, an electrothermal detection system and a method for adsorption factor and adsorption activation energy, which are implemented as follows:

[0007] An electric heating device comprises: a heat preservation box, and an electric heating material filling chamber arranged in the heat preservation box, wherein:

[0008] A first porous conductive gasket and a second porous conductive gasket are provided in the electrothermal material filling chamber, wherein the space between the first porous conductive gasket and the second porous conductive gasket is filled with a conductive porous material, and the diameters of the first porous conductive gasket and the second porous conductive gasket are equal to the inner diameter of the electrothermal material filling chamber;

[0009] The first porous conductive gasket is connected to the first end of a power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of a power supply with adjustable output power through a wire. The thermal effect generated by the current of the power supply with adjustable output power flowing through the conductive porous material heats the conductive porous material.

[0010] In one embodiment, the electric heating material filling chamber is connected to the gas pipeline in the insulation box, a temperature measuring element is provided at the outlet end of the electric heating material filling chamber, and an insulating gasket is provided at the connection between the electric heating material filling chamber, the gas pipeline and the temperature measuring element.

[0011] In one embodiment, the filling mass of the conductive porous material is 10 mg to 40 mg, the inner diameter of the electrothermal material filling chamber is 5 mm to 20 mm, the material of the first porous conductive gasket and the second porous conductive gasket includes one of the following: metal copper, metal iron, metal aluminum, the thickness of the first porous conductive gasket and the second porous conductive gasket is 1 mm to 10 mm, and the pore size of the first porous conductive gasket and the second porous conductive gasket is 1 μm to 20 μm.

[0012] An electrothermal detection system and method for adsorption factor and adsorption activation energy, comprising: the above-mentioned electrothermal device, a first adsorbate container carrying a gaseous adsorbate to be measured, a second adsorbate container carrying a liquid adsorbate to be measured, and a signal detector, wherein:

[0013] The first adsorbate container is connected to the inlet of the electric heating device through a gas pipeline;

[0014] The inlet of the second adsorbate container is connected to the carrier gas cylinder via a carrier gas pipeline, and the outlet of the second adsorbate container is connected to the inlet of the electric heating device via a liquid sample injection pipeline;

[0015] The signal detector is connected to the outlet of the electrothermal device and is used to perform adsorption detection on the adsorbate entering the electrothermal material loading chamber of the electrothermal device.

[0016] In one embodiment, the detection system further includes: a controller;

[0017] The gas pipeline is provided with a first valve, the carrier gas pipeline is provided with a second valve, and the liquid sample injection pipeline is provided with a third valve;

[0018] The controller is electrically connected to the first valve, the second valve and the third valve, and is used to control the on-off of the first valve, the second valve and the third valve according to the phase state of the adsorbate, so as to achieve on-off control of the gas pipeline, the carrier gas pipeline and the liquid injection pipeline.

[0019] In one embodiment, the gas pipeline and the liquid sample inlet pipeline are connected to the inlet of the electric heating device through a three-way valve, and the controller is electrically connected to the three-way valve. According to the phase state of the adsorbate, the controller controls the on-off port of the three-way valve.

[0020] A method for detecting an adsorption factor and an adsorption activation energy using an electrothermal detection system includes:

[0021] Adjusting the power of a power supply with adjustable output power and detecting the temperature of the conductive porous material in real time;

[0022] When the temperature of the conductive porous material reaches a preset temperature and stabilizes at the preset temperature, a pipeline in the adsorbate gas path unit that is compatible with the phase state of the adsorbate to be tested at room temperature is connected to purge the conductive porous material and start the adsorption test;

[0023] Detect the gas flowing through it through a signal detector, obtain the detection signal data and record it;

[0024] Calculating the adsorption factor of the conductive porous material according to the recorded detection signal data;

[0025] The electrothermal adsorption activation energy is calculated based on the adsorption factor of the conductive porous material.

[0026] In one embodiment, the adsorption factor of the conductive porous material is calculated based on the recorded detection signal data, including:

[0027] The adsorption factor of the conductive porous material is calculated according to the following formula:

[0028]

[0029] Among them, q t is the adsorption amount of the conductive porous material at time t during the adsorption process, q ∞ is the adsorption amount of the conductive porous material at adsorption equilibrium, α is the adsorption factor of the conductive porous material, S is the cross-sectional area of the electrothermal material filling chamber, d is the filling thickness of the conductive porous material, v is the purge flow rate of the adsorbate gas path unit, t is the adsorption time, Depend on Convert to get;

[0030] in,

[0031] Among them, S t is the detection signal data recorded at time t during the adsorption process, S0 is the detection signal data recorded at the initial moment of adsorption, S ∞ It is the detection signal data recorded at adsorption equilibrium.

[0032] In one embodiment, by Convert include:

[0033] by As the vertical axis, Plot the horizontal axis;

[0034] Select a predetermined number of consecutive data values for linear fitting to obtain a target fitting line;

[0035] Determining the intercept of the target fitted straight line;

[0036] The intercept of the target fitting line is used as In order to obtain

[0037] In one embodiment, the electrothermal adsorption activation energy is calculated based on the adsorption factor of the conductive porous material, comprising:

[0038] Obtaining the specific heat capacity of the conductive porous material, the loading mass of the conductive porous material, and the temperature increased by electric heating;

[0039] The electric heating power is determined according to the specific heat capacity of the conductive porous material, the filling mass of the conductive porous material and the temperature increased by the electric heating;

[0040] The logarithm of the adsorption factor is used as the ordinate and the reciprocal of the electric heating power is used as the abscissa to perform linear fitting and obtain the target fitting straight line;

[0041] The electrothermal adsorption activation energy is calculated based on the slope of the target fitting straight line.

[0042] A device for detecting an adsorption factor and an adsorption activation energy based on an electrothermal detection system, comprising:

[0043] A regulating module, used to regulate the power of a power supply with adjustable output power and to detect the temperature of the conductive porous material in real time;

[0044] a control module configured to, when the temperature of the conductive porous material reaches a preset temperature and stabilizes at the preset temperature, connect a pipeline in the adsorbate gas path unit that is compatible with the phase state of the adsorbate to be tested at room temperature, purge the conductive porous material, and start an adsorption test;

[0045] The detection module is used to detect the gas flowing through the gas through a signal detector, obtain the detection signal data and record it;

[0046] A first calculation module is used to calculate the adsorption factor of the conductive porous material according to the recorded detection signal data;

[0047] The second calculation module is used to calculate the electrothermal adsorption activation energy according to the adsorption factor of the conductive porous material.

[0048] An electronic device comprises a processor and a memory for storing instructions executable by the processor, wherein the steps of the above method are implemented when the processor executes the instructions.

[0049] A computer-readable storage medium stores a computer program / instruction thereon, which implements the steps of the above method when executed by a processor.

[0050] The present application provides an electrothermal device, an electrothermal detection system and method for adsorption factor and adsorption activation energy. The electrothermal detection system for adsorption factor and adsorption activation energy includes: an electrothermal device, a first adsorbate container carrying a gaseous adsorbate to be tested, a second adsorbate container carrying a liquid adsorbate to be tested, and a signal detector. The signal detector is used to perform adsorption detection on the adsorbate entering the electrothermal material loading chamber of the electrothermal device to calculate the adsorption factor and electrothermal adsorption activation energy of the conductive porous material. The above solution solves the existing technical problem of being unable to accurately determine the adsorption performance of porous materials under the action of electric current, which leads to the inability to determine the reaction rate of catalytic reaction or adsorption separation, and achieves the technical effect of accurately and efficiently determining the adsorption performance of porous materials under the action of electric current. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of this specification, the following is a brief introduction to the drawings required for use in the embodiments. The drawings described below are only some of the embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0052] Figure 1 This is a schematic structural diagram of an electric heating device provided by the present application;

[0053] Figure 2 This is a schematic structural diagram of an electrothermal detection system for adsorption factor and adsorption activation energy provided by the present application;

[0054] Figure 3 This is a method flow chart of an embodiment of the electrothermal detection system for adsorption factor and adsorption activation energy provided by the present application;

[0055] Figure 4 is a target fitting straight line graph of Example 1 of the electrothermal detection method for adsorption factor and adsorption activation energy provided in this application;

[0056] Figure 5 is a target fitting straight line graph of Example 2 of the electrothermal detection method for adsorption factor and adsorption activation energy provided in this application;

[0057] Figure 6 This is a hardware structure block diagram of an electronic device for an electrothermal detection method of adsorption factor and adsorption activation energy provided by the present application;

[0058] Figure 7 It is a schematic diagram of the module structure of an embodiment of the electrothermal detection method of adsorption factor and adsorption activation energy provided by the present application. DETAILED DESCRIPTION

[0059] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0060] In view of the problem that in the existing test of the adsorption capacity of porous materials, external heating is usually used to heat the porous materials, and the test is carried out under non-electric field conditions, which makes it impossible to characterize the true adsorption performance of the porous materials under the action of electric current, in this example, an electrothermal device and an electrothermal detection system for adsorption factor and adsorption activation energy using the electrothermal device for adsorption detection are provided.

[0061] Specifically, such as Figure 1 As shown, in this example, an electric heating device is provided, which may include: an insulation box 17, and an electric heating material filling chamber 16 arranged in the insulation box, wherein: a first porous conductive gasket 11 and a second porous conductive gasket 13 are arranged in the electric heating material filling chamber, wherein the first porous conductive gasket 11 and the second porous conductive gasket 13 are filled with a conductive porous material 12, the diameters of the first porous conductive gasket 11 and the second porous conductive gasket 13 are equal to the inner diameter of the electric heating material filling chamber 16, the first porous conductive gasket 11 and the second porous conductive gasket 13 are circular in shape, and the inside of the electric heating material filling chamber 16 is a circular channel; the first porous conductive gasket 11 is connected to the first end of an adjustable output power power supply 18 through a wire, and the second porous conductive gasket 13 is connected to the second end of the adjustable output power power supply 18 through a wire, and the current of the adjustable output power power supply 18 flows through the conductive porous material, and the thermal effect generated by the thermal effect heats the conductive porous material 12.

[0062] The conductive porous material 12 can be fixed by disposing the first porous conductive gasket 11 and the second porous conductive gasket 13 .

[0063] Furthermore, the electric heating material filling chamber 16 is connected to the gas pipeline in the thermal insulation box 17, and a temperature measuring element 15 is set at the outlet end of the electric heating material filling chamber 16. An insulating gasket 14 can be set at the connection between the electric heating material filling chamber 16, the gas pipeline and the temperature measuring element 15. Through the setting of the insulating gasket 14, it can be prevented that after the electric heating material filling chamber 16 is connected to the gas pipeline in the thermal insulation box 17, the current can be prevented from flowing from the conductive electric heating material filling chamber 16 to the conductive gas pipeline.

[0064] Specifically, the filling mass of the above-mentioned conductive porous material 13 can be 10 mg to 40 mg, the inner diameter size of the electrothermal material filling chamber 16 can be 5 mm to 20 mm, the material of the first porous conductive gasket 11 and the second porous conductive gasket 13 can include but is not limited to one of the following: metal copper, metal iron, metal aluminum, the thickness of the first porous conductive gasket 11 and the second porous conductive gasket 13 can be 1 mm to 10 mm, and the pore size of the first porous conductive gasket 11 and the second porous conductive gasket 13 can be 1 μm to 20 μm.

[0065] However, it is worth noting that the above-mentioned settings for the filling mass of the porous material, the inner diameter of the electric heating material filling chamber, the material, thickness and pore size of the conductive gasket are only exemplary descriptions. In actual implementation, the appropriate filling mass, inner diameter, material, thickness and pore size can be selected according to actual needs, and this application does not limit this.

[0066] By means of the above-mentioned electric heating device, the conductive porous material can be heated by utilizing the thermal effect generated by the current of a power supply with adjustable output power flowing through the conductive porous material.

[0067] In order to detect the adsorption performance of the conductive porous material under current conditions, an electrothermal detection system based on the adsorption factor and adsorption activation energy of the above-mentioned electrothermal device is provided in the embodiment of the present application. Figure 2 As shown, the electrothermal detection system for the adsorption factor and adsorption activation energy may include: the above-mentioned electrothermal device, a first adsorbate container 1 carrying the gaseous adsorbate to be measured, a second adsorbate container 9 carrying the liquid adsorbate to be measured, and a signal detector 19, wherein:

[0068] When the adsorbate to be measured is in a gaseous state at room temperature, the gaseous adsorbate to be measured is placed in the first adsorbate container 1. A first adsorbate container pressure reducing valve 2 is provided at the bottle mouth of the first adsorbate container 1 for adjusting the gas pressure in the first adsorbate container 1. The first adsorbate container 1 is connected to the inlet of the electric heating device through a gas pipeline and a three-way valve 10. The gaseous adsorbate to be measured enters the electric heating device through the gas pipeline.

[0069] When the adsorbate to be tested is liquid at room temperature, the liquid adsorbate to be tested is placed in the second adsorbate container 9. The inlet of the second adsorbate container 9 is connected to the carrier gas cylinder 3 through a carrier gas pipeline. The carrier gas cylinder 3 is used to carry carrier gas. A carrier gas cylinder pressure reducing valve 4 is provided at the bottle mouth of the carrier gas cylinder 3 for regulating the gas pressure in the carrier gas cylinder 3. The second adsorbate container 9 is connected to the inlet of the electric heating device through a liquid sampling pipeline and a three-way valve 10. The carrier gas enters the second adsorbate container 9 through the carrier gas pipeline, carrying the liquid adsorbate to be tested into the electric heating device in the form of saturated vapor.

[0070] When the system is working, a gas pipeline or a liquid inlet pipeline is selected according to the phase state of the adsorbent to be measured at room temperature. In order to select a suitable pipeline according to the phase state of the adsorbent to be measured at room temperature, and to control the flow of the gas pipeline, the carrier gas pipeline and the liquid inlet pipeline, a first valve 5 is provided on the gas pipeline, a second valve 6 is provided on the carrier gas pipeline, and a third valve 7 is provided on the liquid inlet pipeline. A controller 8 is provided on the gas pipeline, the carrier gas pipeline and the liquid inlet pipeline, and is electrically connected to the first valve 5, the second valve 6 and the third valve 7. The controller 8 realizes on-off control and flow control of the gas pipeline, the carrier gas pipeline and the liquid inlet pipeline by controlling the first valve 5, the second valve 6 and the third valve 7. The controller 8 is also electrically connected to the three-way valve 10, and is used to control the on-off port of the three-way valve 10 according to the phase state of the adsorbent to be measured;

[0071] The signal detector 19 is connected to the outlet of the electric heating device and is used to perform adsorption detection on the adsorbate to be tested entering the electric heating material loading chamber 16 of the electric heating device. The detection signal data recorded by the signal detector 19 is recorded in real time in the computer 20.

[0072] Specifically, the three-way valve 10 used to connect the adsorbent gas path and the electric heating device can be a multi-way valve according to the needs of the device pipeline. The multi-way valve can include but is not limited to one of the following: a three-way valve, a four-way valve, a five-way valve, and a six-way valve.

[0073] Specifically, to prevent the liquid level in the second adsorbent container 9 from being too high, causing the liquid adsorbent to be measured to be sucked back into the liquid sampling pipeline, the above-mentioned carrier gas pipeline is connected to the second valve 6 and the controller 8 and then placed below the liquid level of the second adsorbent container 9. The volume of the liquid adsorbent to be measured can account for 1 / 5 to 4 / 5 of the volume of the second adsorbent container 9.

[0074] Specifically, the flow range of the above-mentioned gas pipeline, liquid sample injection pipeline and carrier gas pipeline can be 20ml / min-150ml / min, the carrier gas can include but is not limited to one of the following: nitrogen, helium, hydrogen, argon, the detector can include but is not limited to one of the following: electron capture detector, infrared spectrum detector, quartz crystal detector, gas chromatography detector, and the signal recording frequency of the computer can be once every 0.02s-1s.

[0075] However, it is worth noting that the above-mentioned settings for the flow range of the pipeline, the volume of the container occupied by the adsorbent, and the types of carrier gas and detector are only exemplary. In actual implementation, the appropriate flow range, volume ratio, carrier gas and detector types can be selected according to actual needs, and this application does not limit this.

[0076] The present invention also provides a method for detecting conductive porous materials using an electrothermal detection system using the above-mentioned adsorption factor and adsorption activation energy. Although the present application provides system structures or method operating steps as shown in the following embodiments or drawings, more or fewer operating steps or module units may be included in the system or method based on routine or no creative labor. In the steps or structures where there is no necessary causal relationship logically, the execution order of these steps or the module structure of the system is not limited to the execution order or module structure described in the embodiments of the present application and shown in the drawings. When the method or module structure is applied to a system or terminal product in practice, it can be connected according to the method or module structure shown in the embodiments or drawings for sequential execution or parallel execution (for example, a parallel processor or a multi-threaded processing environment, or even a distributed processing environment).

[0077] Specifically, the above method for detecting the conductive porous material can be as follows: Figure 3 As shown, the following steps are included:

[0078] S301: Adjust the power of the power supply with adjustable output power and detect the temperature of the conductive porous material in real time. Specifically, the temperature of the conductive porous material is detected in real time using a temperature measuring element. The temperature measuring element may include, but is not limited to, one of the following: a thermocouple, an infrared thermometer, a laser thermometer, and an acoustic thermometer.

[0079] Specifically, when a thermocouple is used to detect the temperature of a conductive porous material in real time, the thermocouple is placed at the outlet end of the electrothermal material loading chamber, inserted into the connecting pipe between the electrothermal material loading chamber and the signal detector, and sealed with an insulating rubber gasket. The front end of the thermocouple does not contact the second porous conductive gasket.

[0080] S302: When the temperature of the conductive porous material reaches a preset temperature and stabilizes at the preset temperature, a pipeline in the adsorbent gas path unit that is compatible with the phase state of the adsorbent to be tested at room temperature is connected to purge the conductive porous material and start an adsorption test.

[0081] Specifically, due to the different phases of the adsorbent to be measured, the controller can be used to control the on / off of the first valve, the second valve, and the third valve, as well as the on / off port of the three-way valve, to connect the pipeline in the adsorbent gas path unit that is compatible with the phase of the adsorbent to be measured at room temperature.

[0082] Specifically, when the adsorbate to be measured is in a gaseous state, the adsorbate to be measured directly enters the electrothermal material filling chamber after the gas pipeline is connected. When the adsorbate to be measured is in a liquid state, the adsorbate to be measured is connected to the liquid sampling pipeline and is carried by the carrier gas into the electrothermal material filling chamber in the form of saturated steam.

[0083] S303: Detect the gas flowing through the gas through a signal detector, obtain detection signal data and record it.

[0084] Specifically, the gas flowing through is detected by a signal detector, and detection signal data is obtained and recorded. When the fluctuation of the detection signal is less than a preset fluctuation value, adsorption equilibrium is reached and the test is ended.

[0085] S304: Calculating the adsorption factor of the conductive porous material according to the recorded detection signal data.

[0086] During implementation, the adsorption factor of the conductive porous material can be calculated according to the following formula:

[0087]

[0088] Among them, q t is the adsorption amount of the conductive porous material at time t during the adsorption process, q ∞ is the adsorption amount of the conductive porous material at adsorption equilibrium, α is the adsorption factor of the conductive porous material, S is the cross-sectional area of the electrothermal material filling chamber, d is the filling thickness of the conductive porous material, v is the purge flow rate of the adsorbate gas path unit, t is the adsorption time, Depend on Convert to get;

[0089] in,

[0090] Among them, S t is the detection signal data recorded at time t during the adsorption process, S0 is the detection signal data recorded at the initial moment of adsorption, S ∞ It is the detection signal data recorded at adsorption equilibrium.

[0091] Furthermore, in order to determine the adsorption factor, the following method can be used: Convert to variable

[0092] S1: As the vertical axis, Plot the horizontal axis;

[0093] S2: Select a predetermined number of consecutive data values for linear fitting to obtain the target fitting line;

[0094] Specifically, when determining to obtain the target fitting line, linear fitting can be performed on multiple sets of predetermined numbers of continuous data to obtain multiple fitting lines, and the line with the highest fitting degree is selected from the multiple fitting lines as the target fitting line.

[0095] S3: Determine the intercept of the target fitting line;

[0096] S4: Take the intercept of the target fitting line as In order to obtain

[0097] S305: Calculating the electrothermal adsorption activation energy according to the adsorption factor of the conductive porous material.

[0098] Specifically, the electrothermal adsorption activation energy may be calculated based on the adsorption factor of the conductive porous material, which may include:

[0099] S1: Obtaining the specific heat capacity of the conductive porous material, the filling mass of the conductive porous material, and the temperature increased by electric heating;

[0100] S2: Determine the electric heating power according to the specific heat capacity of the conductive porous material, the filling mass of the conductive porous material and the temperature increased by the electric heating;

[0101] Specifically, the electric heating power can be determined according to the following formula:

[0102]

[0103] Wherein, P is the electric heating power, Q is the heat absorbed by the conductive porous material, m is the filling mass of the conductive porous material, c is the specific heat capacity of the conductive porous material, and T is the temperature raised by the electric heating.

[0104] S3: Use the logarithm of the adsorption factor as the ordinate and the reciprocal of the electric heating power as the abscissa to perform linear fitting to obtain the target fitting line;

[0105] S4: Calculate the electrothermal adsorption activation energy according to the slope of the target fitting line.

[0106] Specifically, the electrothermal adsorption activation energy can be calculated according to the following formula:

[0107]

[0108] Among them, E a,e is the electrothermal adsorption activation energy, k represents the slope of the target fitting line, c is the specific heat capacity of the conductive porous material, m is the loading mass of the conductive porous material, R is the molar gas constant, and t is the adsorption time.

[0109] The electrothermal detection system and method of the adsorption factor and adsorption activation energy are described in detail below with reference to a specific embodiment. However, it is worth noting that this specific embodiment is only for better illustrating the present application and does not constitute an improper limitation on the present application.

[0110] In this example, an electrothermal detection system for adsorption factor and adsorption activation energy is provided, which includes: an adsorbent gas path unit, an electrothermal unit and a test unit, wherein the adsorbent gas path unit includes a gas branch, a liquid branch and a carrier branch; the electrothermal unit includes an electrothermal material filling chamber, a porous conductive gasket and an insulation box; the test unit includes a signal detector and a computer.

[0111] Specifically, the system can be as described above Figure 2 As shown, it includes: an adsorbent gas cylinder 1, an adsorbent gas cylinder pressure reducing valve 2, a carrier gas cylinder 3, a carrier gas cylinder pressure reducing valve 4, a gaseous branch valve 5 (corresponding to the first valve 5 mentioned above), a carrier branch valve 6 (corresponding to the second valve 6 mentioned above), a flow control element 8 (corresponding to the controller 8 mentioned above), an adsorbent volatilization bottle 9, a liquid branch valve 7 (corresponding to the third valve mentioned above), an adsorbent gas circuit three-way valve 10, a conductive porous material 12, a porous conductive gasket 13 (corresponding to the first porous conductive gasket 11 and the second porous conductive gasket 13 mentioned above), an insulating gasket 14, a thermocouple 15, an electric heating material filling chamber 16, an insulation box 17, a power supply 18, a signal detector 19 and a computer 20.

[0112] Based on the above system, the branch in the adsorbent gas path unit is selected according to the phase state of the adsorbent at room temperature. When the adsorbent is gaseous at room temperature, the gaseous branch is selected; when the adsorbent is liquid at room temperature, the liquid branch and the carrier branch are selected; the gaseous branch is connected to the adsorbent gas cylinder, and the adsorbent gas cylinder contains gaseous adsorbent; the liquid branch is provided with an adsorbent volatilization bottle, and the liquid adsorbent is loaded into the adsorbent volatilization bottle. A rubber stopper is provided at the bottle mouth of the adsorbent volatilization bottle for sealing the adsorbent volatilization bottle.

[0113] In order to avoid the liquid level being too high and causing the liquid to be sucked back into the pipeline, the liquid adsorbent can occupy 1 / 5 to 4 / 5 of the volume of the adsorbent volatilization bottle. Preferably, the liquid adsorbent can occupy 1 / 2 to 2 / 3 of the volume of the adsorbent volatilization bottle. The above-mentioned carrier branch is connected to the carrier gas cylinder, wherein the carrier gas in the carrier gas cylinder can be: nitrogen, helium, hydrogen, argon, etc. Preferably, nitrogen can be selected as the carrier gas.

[0114] Furthermore, a flow control element, such as a gas flow meter, can be provided between the liquid branch and the carrier branch; and flow regulating elements, such as flow controllers, can be provided on each of the gaseous and liquid branches. The flow rate of the adsorbate gas circuit unit can range from 20 ml / min to 150 ml / min, preferably from 40 ml / min to 120 ml / min.

[0115] During implementation, two porous conductive gaskets (corresponding to the first porous conductive gasket and the second porous conductive gasket mentioned above) can be placed inside the above-mentioned electrothermal material filling chamber, and conductive porous material is filled between the two porous conductive gaskets. The diameter of the porous conductive gasket can be consistent with the inner diameter size of the electrothermal material filling chamber. Specifically, the inner diameter of the electrothermal material filling chamber can be 5mm to 20mm, preferably, it can be 10mm to 15mm; the inside of the electrothermal material filling chamber can be filled with 10mg to 40mg of conductive porous material, preferably, 15mg-30mg of conductive porous material. Among them, the material of the porous conductive gasket can be metal copper, metal iron, metal aluminum, etc., preferably, metal copper can be selected as the material of the porous conductive gasket; the thickness of the above-mentioned porous conductive gasket can be 1mm to 10mm, preferably, it can be 4mm to 8mm; the pore size of the porous conductive gasket can be 1μm to 20μm, preferably, it can be 5μm to 10μm.

[0116] The insulating gasket provided at the connection between the electrothermal material loading chamber and the gas pipeline may be a rubber gasket. During testing, a temperature measuring element is used to determine the temperature of the conductive porous material. The temperature measuring element may be a thermocouple, an infrared thermometer, a laser thermometer, an acoustic thermometer, or the like. The signal detector may be an electron capture detector, an infrared spectrometer, a quartz crystal detector, a gas chromatograph, or the like. The computer may record the signal at intervals of 0.02 to 1 second, preferably at intervals of 0.2 to 0.5 seconds.

[0117] In this example, a method for measuring the adsorption factor and adsorption activation energy using the electrothermal detection system is also provided, which can include the following steps: loading a conductive porous material into an electrothermal material loading chamber, placing a porous conductive gasket at each end of the conductive porous material, connecting the electrothermal material loading chamber to the gas path in the insulation box, and connecting the porous conductive gasket to a power supply with adjustable output power through a wire. In order to avoid experimental errors caused by room temperature differences, the temperature in the insulation box is controlled to be consistent before electrically heating the conductive porous material. The power output power of the power supply is regulated to heat the conductive porous material. After determining that the temperature of the conductive porous material is stable through a temperature measuring element, the corresponding valve of the required branch in the adsorbent gas path is opened, the purge flow rate is set, the conductive porous material is purged, and the adsorption test is started. The signal detector records the detection signal in real time in the computer until the detection signal fluctuation is less than 0.1%, that is, adsorption equilibrium is reached, and the test is ended.

[0118] Based on the following assumptions: the geometric shape of the conductive porous material particles can be regarded as spherical, the adsorbate concentration in all directions of the conductive porous material particles is consistent, and the adsorption equilibrium relationship between the adsorption amount and adsorption concentration of the conductive porous material is linear, the equation describing the adsorption concentration during the adsorption process can be expressed as:

[0119]

[0120] Among them, c t is the adsorption concentration at time t during the adsorption process, in mol / ml, c ∞ is the adsorption concentration at adsorption equilibrium, in mol / ml, and λ are dimensionless variables, v is the purge flow rate of the adsorbent gas path unit, in mL / min, t is the adsorption time, in min, S is the cross-sectional area of the electrothermal material loading chamber, in cm 2 , d is the filling thickness of the conductive porous material, in cm, α is the adsorption factor, and exp(·) is an exponential function with the natural constant e as the base.

[0121] Since the adsorption equilibrium relationship between the adsorption amount and adsorption concentration of the conductive porous material is linear, the adsorption amount and adsorption concentration during the adsorption process can satisfy the following relationship:

[0122] q(t)=Kc(t) (Formula 2)

[0123] Where q is the adsorption capacity of the conductive porous material, in mol / cm 3 , K is the adsorption equilibrium constant, c is the adsorption concentration, and the unit is mol / ml.

[0124] According to the adsorption concentration equation (Formula 1) and the relationship between the adsorption amount and the adsorption concentration (Formula 2) in the above-mentioned adsorption process, the model equation of the adsorption amount and the adsorption time of the conductive porous material can be obtained. Through the model equation of the adsorption amount and the adsorption time, the adsorption factor of the conductive porous material can be determined.

[0125] The model equation of adsorption amount and adsorption time of conductive porous materials can be expressed as:

[0126]

[0127] Among them, q t is the adsorption amount of the conductive porous material at time t during the adsorption process, in mol / cm 3 ,q ∞ is the adsorption capacity of the conductive porous material at adsorption equilibrium, in mol / cm 3 , α is the adsorption factor of the conductive porous material, S is the cross-sectional area of the electrothermal material filling chamber, d is the filling thickness of the conductive porous material, v is the purge flow rate of the adsorbent gas path unit, t is the adsorption time, Depend on Converted.

[0128] Furthermore, in order to determine the adsorption factor of the conductive porous material through the above-mentioned model equation of adsorption amount and adsorption time (Formula 3).

[0129] Specifically, the signal data recorded by the computer can be converted according to the following formula to obtain

[0130] Among them, S t is the signal data recorded by the computer at time t during the adsorption process, S0 is the signal data recorded by the computer at the initial moment of adsorption, S ∞ It is the signal data recorded by the computer at adsorption equilibrium.

[0131] Furthermore, the signal data recorded by the computer is converted into Substitute into the model equation of adsorption amount and adsorption time (Formula 3), and then use As the vertical axis, Plot the horizontal axis and perform linear fitting on every 10 consecutive data to obtain multiple fitting lines. The line with the highest fitting degree is selected as the target fitting line. The intercept of the target fitting line is Calculated The slope of the fitted line through the target is The adsorption factor α was calculated.

[0132] Furthermore, in order to explore the influence of electric heating power on the adsorption factor, it is necessary to calculate the electric heating adsorption activation energy E a,e .

[0133] The relationship between the adsorption factor α and the temperature T can be obtained by the Arrhenius formula, which can be expressed as:

[0134]

[0135] Among them, E a is the activation energy in J / mol, R is the molar gas constant in J / (mol·K), and T is the temperature increased or decreased in K.

[0136] In order to obtain the relationship between the adsorption factor and the electric heating power, we can first obtain the relationship between the electric heating power and the temperature T increased by electric heating, and then replace T in Formula 4 with an expression related to P.

[0137] Specifically, the relationship between electric heating power and temperature T can be expressed by the following formula:

[0138]

[0139] Wherein, P is the electric heating power in W, Q is the heat absorbed by the conductive porous material in J, m is the packing mass of the conductive porous material in kg, c is the specific heat capacity of the conductive porous material in J / (kg·K), and T is the temperature increased by electric heating in K.

[0140] Furthermore, according to Formula 4 and Formula 5, it can be obtained that the adsorption factor α and the electric heating power P satisfy the following relationship:

[0141]

[0142] Where t is the adsorption time in seconds, E a,e is the electrothermal adsorption activation energy, with the unit being J / mol.

[0143] According to the calculated adsorption factor α and electric heating power P, with lnα as the vertical coordinate, Plot the horizontal axis and perform linear fitting. The slope of the fitted line is The electrothermal adsorption activation energy E was calculated. a,e .

[0144] In the above example, the adsorption factor and electrothermal adsorption activation energy of the conductive porous material under in-situ electrothermal conditions are accurately measured through the above-mentioned electrothermal detection system and method of the adsorption factor and adsorption activation energy. Through this scheme, the adsorption performance of the conductive porous material under the condition of current passing can be accurately reflected, and the influence of the electric heating power on the adsorption factor can be determined.

[0145] The detection of the above-mentioned adsorption factor and electrothermal adsorption activation energy is illustrated as follows using two specific examples:

[0146] Example 1: Detection of the adsorption factor and electrothermal adsorption activation energy of Ni / Y / foam iron material:

[0147] 40 mg of Ni / Y / foam iron material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / foam iron material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A nitrogen cylinder was connected to the carrier gas line, and the nitrogen cylinder pressure reducing valve was opened. 50 ml of cyclohexane was added to a second adsorbent container with a volume of 100 ml. The power of the adjustable output power supply was adjusted to 1.0 W to heat the Ni / Y / foam iron material. The temperature of the Ni / Y / foam iron material was monitored in real time by a thermocouple. When the temperature of the Ni / Y / foam iron material rose to approximately 84° C. and remained stable, the second valve was opened by the controller, the carrier gas flow rate was adjusted to 50 ml / min, the third valve was opened, the on-off port of the three-way valve connected to the liquid inlet line was opened, and the gas chromatography detector was turned on at the same time. Cyclohexane molecules were carried by nitrogen into the electrothermal material loading chamber in the form of saturated vapor, contacted with the conductive porous material, and began to be adsorbed. The gas chromatography detector detected the flowing gas, recorded a detection signal every 0.5 s, and recorded and stored the detection signal in a computer. When the adsorption time was 480 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium was reached, and the test was terminated.

[0148] Convert the signal data recorded by the computer into Think The vertical axis is Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest fitting degree, the coefficient of determination is 0.9986, the intercept of the fitting line is -0.0095, and the calculation results are is 105.69, passed and the transformed It can be calculated that α is 534.74.

[0149] 40 mg of Ni / Y / foam iron material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / foam iron material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A nitrogen cylinder was connected to the carrier gas line, and the nitrogen cylinder pressure reducing valve was opened. 50 ml of cyclohexane was added to a second adsorbent container with a volume of 100 ml. The power of the adjustable output power supply was adjusted to 1.5 W to heat the Ni / Y / foam iron material. The temperature of the Ni / Y / foam iron material was monitored in real time by a thermocouple. When the temperature of the Ni / Y / foam iron material rose to approximately 101° C. and remained stable, the second valve was opened by the controller, the carrier gas flow rate was adjusted to 50 ml / min, the third valve was opened, the on-off port of the three-way valve connected to the liquid inlet line was opened, and the gas chromatography detector was turned on at the same time. Cyclohexane molecules were carried by nitrogen into the electrothermal material loading chamber in the form of saturated vapor, contacted with the conductive porous material, and began to be adsorbed. The gas chromatography detector detected the flowing gas, recorded a detection signal every 0.5 s, and recorded and stored the detection signal in a computer. When the adsorption time was 480 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium was reached, and the test was terminated.

[0150] Convert the signal data recorded by the computer into Think The vertical axis is Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest fitting degree, the coefficient of determination is 0.9983, the intercept of the fitting line is -0.0097, and the calculation results are is 100.10, passed and the transformed It can be calculated that α is 461.82.

[0151] 40 mg of Ni / Y / foam iron material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / foam iron material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A nitrogen cylinder was connected to the carrier gas line, and the nitrogen cylinder pressure reducing valve was opened. 50 ml of cyclohexane was added to a second adsorbent container with a volume of 100 ml. The power of the adjustable output power supply was adjusted to 2.0 W to heat the Ni / Y / foam iron material. The temperature of the Ni / Y / foam iron material was monitored in real time by a thermocouple. When the temperature of the Ni / Y / foam iron material rose to approximately 116° C. and remained stable, the second valve was opened by the controller, the carrier gas flow rate was adjusted to 50 ml / min, the third valve was opened, the on-off port of the three-way valve connected to the liquid inlet line was opened, and the gas chromatography detector was turned on at the same time. Cyclohexane molecules were carried by nitrogen into the electrothermal material loading chamber in the form of saturated vapor, contacted with the conductive porous material, and began to be adsorbed. The gas chromatography detector detected the flowing gas, recorded a detection signal every 0.5 s, and recorded and stored the detection signal in a computer. When the adsorption time was 480 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium was reached, and the test was terminated.

[0152] Convert the signal data recorded by the computer into Think The vertical axis is Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest fitting degree, the coefficient of determination is 0.9993, the intercept of the fitting line is -0.0169, and the calculation results are is 86.95, passed and the transformed We can calculate α to be 317.97.

[0153] 40 mg of Ni / Y / foam iron material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / foam iron material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A nitrogen cylinder was connected to the carrier gas line, and the nitrogen cylinder pressure reducing valve was opened. 50 ml of cyclohexane was added to a second adsorbent container with a volume of 100 ml. The power of the adjustable output power supply was adjusted to 2.5 W to heat the Ni / Y / foam iron material. The temperature of the Ni / Y / foam iron material was monitored in real time by a thermocouple. When the temperature of the Ni / Y / foam iron material rose to approximately 127° C. and remained stable, the second valve was opened by the controller, the carrier gas flow rate was adjusted to 50 ml / min, the third valve was opened, and the on-off port of the three-way valve connected to the liquid inlet line was opened. At the same time, a gas chromatography detector was turned on. Cyclohexane molecules carried by the nitrogen gas entered the electrothermal material loading chamber in the form of saturated vapor, contacted the conductive porous material, and began to be adsorbed. The gas chromatograph detector detected the flowing gas, and the detector recorded a detection signal every 0.5 s. The detection signal was recorded and stored in a computer. When the adsorption time was 480 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium had been reached, and the test was terminated.

[0154] Convert the signal data recorded by the computer into Think The vertical axis is Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest fitting degree, the coefficient of determination is 0.9997, the intercept of the fitting line is -0.0134, and the calculation results are is 74.62, passed and the transformed We can calculate α to be 190.30.

[0155] Taking c as 0.92 kJ / (kg·K), m as 40 mg, R as 8.314 J / (mol·K), and t as 480 s as an example, the electric heating power P is determined. The adsorption factor α calculated from the four tests and the electric heating power P corresponding to the test conditions are plotted with lnα as the ordinate and Plot the horizontal axis and perform a linear fit, such as Figure 4 As shown, the electrothermal adsorption activation energy E was calculated based on the slope of the fitting line. a,e The adsorption factor α and electrothermal adsorption activation energy E calculated at different power outputs a,e This can be shown in Table 1 below:

[0156] Table 1

[0157]

[0158] Example 2: Detection of adsorption factor and electrothermal adsorption activation energy of Pt / ZSM-5 / nickel foam material:

[0159] 30 mg Pt / ZSM-5 / nickel foam material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / iron foam material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A cylinder of 0.5 mol% n-butane was connected to the gas pipeline, the pressure reducing valve of the n-butane cylinder was opened, and the power of the adjustable output power supply was adjusted to 0.5 W to heat the Pt / ZSM-5 / nickel foam material. The temperature of the Pt / ZSM-5 / nickel foam material was monitored in real time by a thermocouple. When the temperature of the Pt / ZSM-5 / nickel foam material rose to approximately 43° C. and remained stable, the first valve was opened by the controller, the purge flow rate of the gas pipeline was adjusted to 70 ml / min, the on-off port of the three-way valve connected to the gas pipeline was opened, and the gas chromatography detector was turned on at the same time. At this time, n-butane molecules entered the electric heating material loading chamber and the Pt / ZSM-5 / nickel foam material and began to adsorb. The gas chromatography detector detected the gas flowing through, and the detection signal was recorded every 0.5 s. The detection signal was recorded and stored in a computer. When the adsorption time was 540 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium was reached, and the test was terminated.

[0160] Convert the signal data recorded by the computer into Think The vertical axis is Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest fitting degree, the coefficient of determination is 0.9973, the intercept of the fitting line is -0.0299, and the calculation results are is 33.44, passed and the transformed It can be calculated that α is 248.02.

[0161] 30 mg Pt / ZSM-5 / nickel foam material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / iron foam material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A cylinder of 0.5 mol% n-butane was connected to the gas pipeline. The pressure reducing valve of the n-butane cylinder was opened, and the power of the adjustable output power supply was adjusted to 0.75 W to heat the Pt / ZSM-5 / nickel foam material. The temperature of the Pt / ZSM-5 / nickel foam material was monitored in real time by a thermocouple. When the temperature of the Pt / ZSM-5 / nickel foam material rose to approximately 61° C. and remained stable, the first valve was opened by the controller, the purge flow rate of the gas pipeline was adjusted to 70 ml / min, the on-off port of the three-way valve connected to the gas pipeline was opened, and the gas chromatography detector was turned on at the same time. At this time, n-butane molecules entered the electrothermal material loading chamber and the Pt / ZSM-5 / nickel foam material and began to adsorb. The gas chromatography detector detected the gas flowing through, recording a detection signal every 0.5 s, and recording and storing the detection signal in a computer. When the adsorption time was 540 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium was reached, and the test was terminated.

[0162] Convert the signal data recorded by the computer into Think The vertical axis is Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest degree of fitting, the coefficient of determination is 0.9972, the intercept of the fitting line is -0.0426, and the calculation results are is 23.47, passed and the transformed We can calculate α to be 173.61.

[0163] 30 mg Pt / ZSM-5 / nickel foam material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / iron foam material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A cylinder of 0.5 mol% n-butane was connected to the gas pipeline. The pressure reducing valve of the n-butane cylinder was opened, and the power of the adjustable output power supply was adjusted to 1.00 W to heat the Pt / ZSM-5 / nickel foam material. The temperature of the Pt / ZSM-5 / nickel foam material was monitored in real time by a thermocouple. When the temperature of the Pt / ZSM-5 / nickel foam material rose to approximately 86° C. and remained stable, the first valve was opened by the controller, the purge flow rate of the gas pipeline was adjusted to 70 ml / min, the on-off port of the three-way valve connected to the gas pipeline was opened, and the gas chromatography detector was turned on at the same time. At this time, n-butane molecules entered the electrothermal material loading chamber and the Pt / ZSM-5 / nickel foam material and began to adsorb. The gas chromatography detector detected the gas flowing through, recording a detection signal every 0.5 s, and recording and storing the detection signal in a computer. When the adsorption time was 540 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium was reached, and the test was terminated.

[0164] Convert the signal data recorded by the computer into Think The vertical axis is Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest fitting degree, the coefficient of determination is 0.9994, the intercept of the fitting line is -0.0403, and the calculation results are is 24.81, passed and the transformed It can be calculated that α is 139.25.

[0165] 30 mg Pt / ZSM-5 / nickel foam material is loaded into an electric heating material loading chamber with an inner diameter of 10 mm. A first porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the left end of the Ni / Y / iron foam material, and a second porous conductive gasket with a thickness of 5 mm and a pore size of 10 μm is placed at the right end. The electric heating material loading chamber is connected to the gas pipeline in the insulation box. A thermocouple is placed at the outlet end of the electric heating material loading chamber and inserted into the connection pipeline between the electric heating material loading chamber and the signal detector. The front end of the thermocouple does not contact the second porous conductive gasket. Insulating rubber gaskets are provided at the connection points between the two ends of the electric heating material loading chamber and the gas pipeline and the thermocouple. The first porous conductive gasket is connected to the first end of the power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of the power supply with adjustable output power through a wire. A cylinder of 0.5 mol% n-butane was connected to the gas pipeline. The pressure reducing valve of the n-butane cylinder was opened, and the power of the adjustable output power supply was adjusted to 1.25 W to heat the Pt / ZSM-5 / nickel foam material. The temperature of the Pt / ZSM-5 / nickel foam material was monitored in real time by a thermocouple. When the temperature of the Pt / ZSM-5 / nickel foam material rose to approximately 102° C. and remained stable, the first valve was opened by the controller, the purge flow rate of the gas pipeline was adjusted to 70 ml / min, the on-off port of the three-way valve connected to the gas pipeline was opened, and the gas chromatograph detector was turned on at the same time. At this time, n-butane molecules entered the electrothermal material loading chamber and the Pt / ZSM-5 / nickel foam material and began to adsorb. The gas chromatograph detector detected the gas flowing through, recording a detection signal every 0.5 s, and recording and storing the detection signal in a computer. When the adsorption time was 540 s, the detection signal fluctuation was less than 0.1%, indicating that adsorption equilibrium was reached, and the test was terminated.

[0166] Convert the signal data recorded by the computer into by As the vertical axis, Plot the horizontal axis, perform linear fitting on every 10 consecutive data, select the group of data with the highest fitting degree, the coefficient of determination is 0.9899, the intercept of the fitting line is -0.053, and the calculation results are is 18.86, passed and the transformed We can calculate α to be 72.37.

[0167] Taking c as 1.31 kJ / (kg·K), m as 30 mg, R as 8.314 J / (mol·K), and t as 540 s as an example, the electric heating power P is determined. The adsorption factor α calculated from the four tests and the electric heating power P corresponding to the test conditions are plotted with lnα as the ordinate and Plot the horizontal axis and perform a linear fit, such as Figure 5 As shown, the electrothermal adsorption activation energy E was calculated based on the slope of the fitting line. a,e The adsorption factor α and electrothermal adsorption activation energy E calculated at different power outputs a,e This can be shown in Table 2 below:

[0168] Table 2

[0169]

[0170] In the above embodiments, the conductive porous material is directly electrically heated, the adsorption performance of the conductive porous material under current conditions is detected and recorded in real time, and the adsorption factor and electric heating adsorption activation energy of the conductive porous material are calculated based on the detection signal data. By calculating the conductive porous material based on the adsorption factor, the adsorption factor and electric heating adsorption activation energy of the conductive porous material under the action of current can be accurately determined, thereby accurately determining the true adsorption performance of the conductive porous material under the action of current.

[0171] The method embodiments provided in the above embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on an electronic device as an example, Figure 6 This is a hardware structure diagram of an electrothermal detection method for adsorption factor and adsorption activation energy provided by this application. Figure 6 As shown, the electronic device 10 may include one or more (only one is shown in the figure) processors 02 (the processor 02 may include but is not limited to a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 04 for storing data, and a transmission module 06 for communication functions. It will be understood by those skilled in the art that Figure 6 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 6 More or fewer components than shown, or with Figure 6 Different configurations shown.

[0172] The memory 04 can be used to store software programs and modules of application software, such as the program instructions / modules corresponding to the electrothermal detection method of the adsorption factor and adsorption activation energy in the embodiment of the present application. The processor 02 executes various functional applications and data processing by running the software programs and modules stored in the memory 04, that is, realizing the electrothermal detection method of the adsorption factor and adsorption activation energy of the above-mentioned application. The memory 04 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 04 may further include a memory remotely located relative to the processor 02, and these remote memories can be connected to the electronic device 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0173] The transmission module 06 is used to receive or send data via a network. Specific examples of the aforementioned network may include a wireless network provided by the communication provider of the electronic device 10. In one embodiment, the transmission module 06 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission module 06 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0174] At the software level, the electrothermal detection method of the adsorption factor and adsorption activation energy can be Figure 7 Shown, including:

[0175] Adjustment module 701: used to adjust the power of the power supply with adjustable output power and to detect the temperature of the conductive porous material in real time;

[0176] Control module 702: When the temperature of the conductive porous material reaches and stabilizes at a preset temperature, connect the pipeline in the adsorbate gas path unit that is compatible with the phase state of the adsorbate to be tested at room temperature to purge the conductive porous material and start the adsorption test;

[0177] Detection module 703: used to detect the gas flowing through the gas through a signal detector, obtain detection signal data and record it;

[0178] A first calculation module 704 is configured to calculate the adsorption factor of the conductive porous material based on the recorded detection signal data;

[0179] The second calculation module 705 is configured to calculate the electrothermal adsorption activation energy according to the adsorption factor of the conductive porous material.

[0180] In one embodiment, the regulating module 701 is configured to regulate the power of the power supply with adjustable output power to a preset wattage to heat the conductive porous material.

[0181] In one embodiment, when the temperature of the conductive porous material reaches a preset temperature and stabilizes at the preset temperature, the control module 702 can control the adsorbent gas circuit unit according to the phase state of the adsorbent to be measured at room temperature. When the adsorbent to be measured is in a gaseous state, the first valve is opened, the second valve and the third valve are closed, and the on-off port of the three-way valve connected to the gaseous pipeline is opened. When the adsorbent to be measured is in a liquid state, the first valve is closed, the second valve and the third valve are opened, and the on-off port of the three-way valve connected to the liquid sample inlet pipeline is opened.

[0182] In one embodiment, the first calculation module 704 may calculate the adsorption factor according to the following formula:

[0183]

[0184] Among them, q t is the adsorption amount of the conductive porous material at time t during the adsorption process, in mol / cm 3 ,q ∞ The adsorption capacity of the conductive porous material at adsorption equilibrium is expressed in mol / cm 3 , α is the adsorption factor of the conductive porous material, S is the cross-sectional area of the electrothermal material filling chamber, unit is cm 2 , d is the filling thickness of the conductive porous material, in cm, v is the purge flow rate of the adsorbent gas path unit, in mL / min, t is the adsorption time, in min, Depend on Converted.

[0185] Specifically, the data recorded by the computer can be converted according to the following formula to obtain

[0186]

[0187] Among them, S t is the detection signal data recorded at time t during the adsorption process, S0 is the detection signal data recorded at the initial moment of adsorption, S ∞ It is the detection signal data recorded at adsorption equilibrium.

[0188] In one embodiment, Can be Converted to include: As the vertical axis, Plot the horizontal axis, perform linear fitting on each preset number of continuous data, select the set of data with the highest fitting degree as the target fitting line, determine the intercept of the target fitting line, and use the intercept of the target fitting line as the In order to obtain

[0189] In one embodiment, the second calculation module 705 can determine the electrothermal adsorption activation energy in the following manner, including: obtaining the specific heat capacity of the conductive porous material, the filling mass of the conductive porous material, and the temperature increased by electric heating; determining the electric heating power based on the specific heat capacity of the conductive porous material, the filling mass of the conductive porous material, and the temperature increased by electric heating; performing linear fitting with the logarithm of the adsorption factor as the ordinate and the inverse of the electric heating power as the abscissa to obtain a target fitting straight line; and calculating the electrothermal adsorption activation energy based on the slope of the target fitting straight line.

[0190] In one embodiment, the electric heating power can be determined according to the following formula:

[0191]

[0192] Wherein, P is the electric heating power in W, Q is the heat absorbed by the conductive porous material in J, m is the packing mass of the conductive porous material in kg, c is the specific heat capacity of the conductive porous material in J / (kg·K), and T is the temperature increased by electric heating in K.

[0193] In one embodiment, by regulating different power output powers and performing a predetermined number of tests, multiple sets of different adsorption factors are calculated, and then multiple sets of electric heating powers are calculated based on the specific heat capacity of the conductive porous material, the filling mass of the conductive porous material, and the temperature increased by electric heating. The multiple sets of different adsorption factors and the corresponding electric heating powers are linearly fitted with the logarithm of the adsorption factor as the vertical coordinate and the inverse of the electric heating power as the horizontal coordinate.

[0194] In one embodiment, the calculation module 704 may calculate the electrothermal adsorption activation energy according to the following formula:

[0195]

[0196] Among them, E a,e is the electrothermal adsorption activation energy, k represents the slope of the target fitting line, c is the specific heat capacity of the conductive porous material, m is the loading mass of the conductive porous material, R is the molar gas constant, and t is the adsorption time.

[0197] The embodiments of the present application also provide a specific implementation of an electronic device capable of implementing all steps in the electrothermal detection method for adsorption factor and adsorption activation energy in the above embodiments. The electronic device specifically includes the following: a processor, a memory, a communication interface, and a bus; wherein the processor, the memory, and the communication interface communicate with each other via the bus; the processor is used to call a computer program in the memory, and when the processor executes the computer program, all steps in the electrothermal detection method for adsorption factor and adsorption activation energy in the above embodiments are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0198] Step 1: Adjust the power of the power supply with adjustable output power and detect the temperature of the conductive porous material in real time.

[0199] Step 2: When the temperature of the conductive porous material reaches a preset temperature and stabilizes at the preset temperature, connect the pipeline in the adsorbent gas path unit that is compatible with the phase state of the adsorbent to be tested at room temperature, purge the conductive porous material, and start the adsorption test.

[0200] Step 3: Detect the gas flowing through the gas through a signal detector, obtain the detection signal data and record it.

[0201] Step 4: Calculate the adsorption factor of the conductive porous material based on the recorded detection signal data.

[0202] Step 5: Calculate the electrothermal adsorption activation energy based on the adsorption factor of the conductive porous material.

[0203] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all steps of the electrothermal detection method for the adsorption factor and adsorption activation energy in the above-mentioned embodiment. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, all steps of the electrothermal detection method for the adsorption factor and adsorption activation energy in the above-mentioned embodiment are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0204] Step 1: Adjust the power of the power supply with adjustable output power and detect the temperature of the conductive porous material in real time.

[0205] Step 2: When the temperature of the conductive porous material reaches a preset temperature and stabilizes at the preset temperature, connect the pipeline in the adsorbent gas path unit that is compatible with the phase state of the adsorbent to be tested at room temperature, purge the conductive porous material, and start the adsorption test.

[0206] Step 3: Detect the gas flowing through the gas through a signal detector, obtain the detection signal data and record it.

[0207] Step 4: Calculate the adsorption factor of the conductive porous material based on the recorded detection signal data.

[0208] Step 5: Calculate the electrothermal adsorption activation energy based on the adsorption factor of the conductive porous material.

[0209] From the above description, it can be seen that the system described in the embodiment of the present application includes: adjusting the power of the power supply with adjustable output power, and detecting the temperature of the conductive porous material in real time; when the temperature of the conductive porous material reaches a preset temperature and remains stable, connecting the pipeline in the adsorbent gas path unit that is compatible with the phase state of the adsorbent to be tested at room temperature, purging the conductive porous material, and starting the adsorption test; detecting the gas flowing through by a signal detector, obtaining and recording the detection signal data; calculating the adsorption factor of the conductive porous material based on the recorded detection signal data; calculating the electrothermal adsorption activation energy based on the adsorption factor of the conductive porous material. The above scheme can accurately determine the adsorption factor and electrothermal adsorption activation energy of the conductive porous material under the action of electric current, thereby accurately determining the true adsorption performance of the conductive porous material under the action of electric current.

[0210] The various embodiments in this specification are described in a progressive manner. Similar portions between the various embodiments can be referenced to each other. Each embodiment focuses on the differences between the other embodiments. In particular, the hardware + program embodiments are generally similar to the method embodiments, so their description is relatively simple. For relevant portions, refer to the description of the method embodiments.

[0211] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0212] Although the present application provides method operation steps as described in the embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-creative work. The order of steps listed in the embodiments is only one way of executing the steps among many steps and does not represent the only execution order. When the actual device or client product is executed, it can be executed in sequence or in parallel according to the method shown in the embodiments or the drawings (for example, in a parallel processor or multi-threaded processing environment).

[0213] Although the present specification embodiment provides the method operation steps as described in the embodiment or flow chart, more or less operation steps may be included based on conventional or non-creative means. The order of steps listed in the embodiment is only one way in the order of execution of many steps and does not represent a unique execution order. When the device or terminal product in practice is executed, it can be performed in sequence or in parallel according to the method shown in the embodiment or the accompanying drawings (such as a parallel processor or a multi-threaded processing environment, or even a distributed data processing environment). The term "comprise", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, product or equipment including a series of elements not only include those elements, but also include other elements not clearly listed, or also include elements inherent to such process, method, product or equipment. In the absence of more restrictions, it is not excluded that there are other identical or equivalent elements in the process, method, product or equipment including the elements.

[0214] For the convenience of description, the above devices are described in terms of functions divided into various modules. Of course, when implementing the embodiments of this specification, the functions of each module can be implemented in the same or multiple software and / or hardware, or the modules that implement the same function can be implemented by a combination of multiple sub-modules or sub-units, etc. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0215] Those skilled in the art will also appreciate that, in addition to implementing the controller in pure computer-readable program code, it is entirely possible to implement the same functionality by logically programming the method steps in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, embedded microcontrollers, and the like. Therefore, such a controller can be considered a hardware component, and the devices included therein for implementing various functions can also be considered structures within the hardware component. Alternatively, the devices for implementing various functions can be considered both software modules implementing the method and structures within the hardware component.

[0216] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0217] Those skilled in the art will appreciate that the embodiments of this specification may be provided as methods, systems, or computer program products. Therefore, the embodiments of this specification may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the embodiments of this specification may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0218] Embodiments of this specification may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, and the like that perform specific tasks or implement specific abstract data types. Embodiments of this specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communications network. In distributed computing environments, program modules may be located in local and remote computer storage media, including storage devices.

[0219] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between the various embodiments can be referenced across them. Each embodiment focuses on the differences from the other embodiments. In particular, since the system embodiments are generally similar to the method embodiments, their description is relatively simple. For relevant parts, reference can be made to the description of the method embodiments. Throughout this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the embodiments in this specification. In this specification, the schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and integrate the different embodiments or examples, and features of different embodiments or examples, described in this specification, without conflict.

[0220] The above description is merely an example of the embodiments of this specification and is not intended to limit the embodiments of this specification. For those skilled in the art, various modifications and variations of the embodiments of this specification are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of this specification shall be included within the scope of the claims of the embodiments of this specification.

Claims

1. A method for detecting adsorption factor and adsorption activation energy by an electrothermal detection system, characterized in that: include: Adjusting the power of a power supply with adjustable output power and detecting the temperature of the conductive porous material in real time; When the temperature of the conductive porous material reaches a preset temperature and stabilizes at the preset temperature, a pipeline in the adsorbate gas path unit that is compatible with the phase state of the adsorbate to be tested at room temperature is connected to purge the conductive porous material and start the adsorption test; Detect the gas flowing through it through a signal detector, obtain the detection signal data and record it; Calculating the adsorption factor of the conductive porous material according to the recorded detection signal data; Calculating the electrothermal adsorption activation energy according to the adsorption factor of the conductive porous material; The adsorption factor of the conductive porous material is calculated based on the recorded detection signal data, including: The adsorption factor of the conductive porous material is calculated according to the following formula: Among them, q t is the adsorption amount of the conductive porous material at time t during the adsorption process, q ∞ is the adsorption amount of the conductive porous material at adsorption equilibrium, α is the adsorption factor of the conductive porous material, S is the cross-sectional area of the electrothermal material filling chamber, d is the filling thickness of the conductive porous material, v is the purge flow rate of the adsorbate gas path unit, t is the adsorption time, Depend on Convert to get; in, Among them, S t is the detection signal data recorded at time t during the adsorption process, S0 is the detection signal data recorded at the initial moment of adsorption, S ∞ is the detection signal data recorded at adsorption equilibrium; Among them, Convert include: by As the vertical axis, Plot the horizontal axis; Select a predetermined number of consecutive data values for linear fitting to obtain a target fitting line; Determining the intercept of the target fitted straight line; The intercept of the target fitting line is used as In order to obtain The electrothermal detection system for adsorption factor and adsorption activation energy includes: an electrothermal device, a first adsorbate container carrying the gaseous adsorbate to be measured, a second adsorbate container carrying the liquid adsorbate to be measured, and a signal detector, wherein: The first adsorbate container is connected to the inlet of the electric heating device through a gas pipeline; The inlet of the second adsorbate container is connected to the carrier gas cylinder via a carrier gas pipeline, and the outlet of the second adsorbate container is connected to the inlet of the electric heating device via a liquid sample injection pipeline; The signal detector is connected to the outlet of the electrothermal device and is used to perform adsorption detection on the adsorbate entering the electrothermal material loading chamber of the electrothermal device; The electric heating device comprises: an insulation box and an electric heating material loading chamber arranged in the insulation box, wherein: A first porous conductive gasket and a second porous conductive gasket are provided in the electrothermal material filling chamber, wherein the space between the first porous conductive gasket and the second porous conductive gasket is filled with a conductive porous material, and the diameters of the first porous conductive gasket and the second porous conductive gasket are equal to the inner diameter of the electrothermal material filling chamber; The first porous conductive gasket is connected to the first end of a power supply with adjustable output power through a wire, and the second porous conductive gasket is connected to the second end of a power supply with adjustable output power through a wire. The thermal effect generated by the current of the power supply with adjustable output power flowing through the conductive porous material heats the conductive porous material.

2. The method according to claim 1, characterized in that The electrothermal adsorption activation energy is calculated based on the adsorption factor of the conductive porous material, including: Obtaining the specific heat capacity of the conductive porous material, the loading mass of the conductive porous material, and the temperature increased by electric heating; The electric heating power is determined according to the specific heat capacity of the conductive porous material, the filling mass of the conductive porous material and the temperature increased by the electric heating; The logarithm of the adsorption factor is used as the ordinate and the reciprocal of the electric heating power is used as the abscissa to perform linear fitting and obtain the target fitting straight line; The electrothermal adsorption activation energy is calculated based on the slope of the target fitting straight line.

3. The method according to claim 1, characterized in that The electric heat detection system also includes: a controller; The gas pipeline is provided with a first valve, the carrier gas pipeline is provided with a second valve, and the liquid sample injection pipeline is provided with a third valve; The controller is electrically connected to the first valve, the second valve and the third valve, and is used to control the on-off of the first valve, the second valve and the third valve according to the phase state of the adsorbate, so as to achieve on-off control of the gas pipeline, the carrier gas pipeline and the liquid injection pipeline.

4. The method according to claim 3, wherein the gas pipeline and the liquid sample inlet pipeline are connected to the inlet of the electric heating device through a three-way valve, and the controller is electrically connected to the three-way valve. According to the phase state of the adsorbate, the controller controls the on-off port of the three-way valve.

5. The method according to claim 1, wherein The electric heating material filling chamber is connected to the gas pipeline in the heat preservation box, a temperature measuring element is provided at the outlet end of the electric heating material filling chamber, and an insulating gasket is provided at the connection between the electric heating material filling chamber and the gas pipeline.

6. The method according to claim 1, characterized in that The filling mass of the conductive porous material is 10 mg to 40 mg, the inner diameter of the electrothermal material filling chamber is 5 mm to 20 mm, the material of the first porous conductive gasket and the second porous conductive gasket includes one of the following: metal copper, metal iron, metal aluminum, the thickness of the first porous conductive gasket and the second porous conductive gasket is 1 mm to 10 mm, and the pore size of the first porous conductive gasket and the second porous conductive gasket is 1 μm to 20 μm.

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