Multi-energy-field catalytic gas-phase reaction device and multi-energy-field catalytic reaction method

Abstract

The invention relates to a multi-energy-field catalytic gas-phase reaction device and a multi-energy-field catalytic reaction method. The multi-energy-field catalytic gas-phase reaction device comprises a reaction tube, the reaction tube is coated with a shell; an electrode assembly is also arranged between the reaction tube and the shell; the shell is sequentially provided with a heating assembly, a heat preservation assembly and a magnetic field assembly from inside to outside. A coolant inlet and a coolant outlet are further formed in the two sides of the shell; the shell is provided with an unthreaded hole; the reaction tube comprises a gas inlet section, a reaction section and a gas outlet section which are connected in sequence; the reaction section is arranged in the shell, and the front projection of the reaction section is located in the light hole area; one end, far away from the reaction section, of the gas inlet section extends out of the shell through a first through hole; one end, far away from the reaction section, of the gas outlet section extends out of the shell through a second through hole. The multi-energy-field catalytic gas-phase reaction device can provide thermal field, light field, magnetic field and electric field conditions while performing catalytic reaction, and performs integrated regulation and control on multiple energy fields, so that the catalytic reaction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of gas phase catalysis technology, and in particular to a multi-energy field catalytic gas phase reaction device and a multi-energy field catalytic reaction method. Background Art

[0002] Methane (CH4), as a core component of natural gas, shale gas and combustible ice, is recognized as an important clean fuel due to its high calorific value, combining cost-effectiveness with resource sustainability. However, this compound has a significant greenhouse effect potential, with a unit mass greenhouse effect intensity of more than 20 times that of carbon dioxide. The targeted synthesis of methane into high-value-added chemical products through catalytic conversion technology has become an innovative application direction with great development potential in the current energy and chemical industry. As a typical non-polar molecule, methane (CH4) has sp3 hybridization characteristics in its molecular orbitals and exhibits a highly symmetrical regular tetrahedral configuration. The dissociation energy of the first C-H bond in this molecule is as high as 439 kJ / mol, which often requires a high temperature environment of more than 800K, resulting in high energy consumption and easy carbon deposition and deactivation. Photocatalytic methane conversion can break the limitations of traditional thermodynamic equilibrium, allowing the conversion of methane to be carried out at low temperature and normal pressure. The photocatalytic reaction starts from the high-energy excited state of methane, which can realize many conversion processes that cannot proceed spontaneously under traditional ground state conditions or reduce the temperature required for the catalytic reaction, thereby realizing the conversion of methane under mild conditions and reducing the occurrence of side reactions.

[0003] However, the existing photocatalytic methane conversion technology still has the following significant disadvantages: 1) Low catalyst activity: Existing photocatalytic systems usually rely on metal nanoparticles or clusters as co-catalysts. Due to the limited surface area and uneven distribution of active sites of these catalysts, the separation efficiency of photogenerated carriers is low, which in turn affects the reaction activity. In addition, the activation performance of these catalysts is low, and the adsorption and activation ability of methane molecules is insufficient, making it difficult to achieve efficient methane conversion. 2) Poor product selectivity: Existing methane photocatalytic oxidation systems easily produce by-products such as carbon monoxide and carbon dioxide during the reaction process. In recent years, many studies have shown that the introduction of magnetic field coupling in the photocatalytic process can effectively improve the catalytic efficiency through the separation of photogenerated carriers under the magnetic field and the magnetohydrodynamic effect of charged particles.

[0004] CN118577227A discloses a photomagnetic catalytic gas-phase reaction device and a photomagnetic catalytic reaction method. The photomagnetic catalytic gas-phase reaction device comprises: a housing with a light-transmitting component disposed on the top of the housing; a reaction chamber disposed within the housing, wherein a reaction platform is disposed; a coil winding disposed on the outside of the housing; and a gas through-hole disposed on the housing, connecting the housing and the reaction chamber. The gas-phase reaction device, by disposing the light-transmitting component and the coil winding within the reaction chamber, can simultaneously achieve light and magnetic field conditions to carry out a gas-phase catalytic reaction. This achieves integrated control of the photomagnetic reaction within a single device, improving the efficiency of the photocatalytic reaction. Furthermore, the device has a simple structure, is compact, and is easily removable.

[0005] CN107741468A discloses a magneto-photo-thermal synergistic catalyst evaluation device, which includes a reactor, a magnetic field control unit, a light control unit, a temperature control unit, a gas supply unit, and a product analysis unit. The catalyst evaluation device not only has the basic functions of a conventional fixed-bed catalyst evaluation device such as regulating reaction temperature, pressure, and space velocity, but can also apply a magnetic field and light to the catalyst bed in a continuous flow fixed-bed reactor, providing a tool for studying magneto-photo-thermal synergistic gas-solid multiphase catalytic reactions.

[0006] The above-mentioned existing technologies can only achieve the coupling of light and magnetic field, but cannot achieve the simultaneous control of electric field and temperature. Therefore, based on the existing technical requirements, it is necessary to provide a multi-energy field catalytic gas phase reaction device and a multi-energy field catalytic reaction method. Summary of the Invention

[0007] To address the above technical issues, the present invention provides a multi-energy field catalytic gas-phase reaction device and a multi-energy field catalytic reaction method. The multi-energy field catalytic gas-phase reaction device of the present invention can simultaneously control the thermal field, optical field, magnetic field, and electric field within the gas-phase reaction device, thereby enhancing the catalytic reaction and improving the efficiency of the gas-phase catalytic reaction.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a multi-energy field catalytic gas-phase reaction device, comprising a reaction tube; the reaction tube is coated with a shell; an electrode assembly is further provided between the reaction tube and the shell; the shell is provided with a heating assembly, a heat preservation assembly, and a magnetic field assembly in sequence from the inside to the outside; and a coolant inlet and a coolant outlet are further provided on both sides of the shell;

[0010] The shell is provided with a light hole; the reaction tube includes an air inlet section, a reaction section and an air outlet section connected in sequence; the reaction section is arranged inside the shell, and its front projection is located in the light hole area;

[0011] One end of the air inlet section away from the reaction section extends out of the shell through a first through hole; and one end of the air outlet section away from the reaction section extends out of the shell through a second through hole.

[0012] The multi-energy field catalytic gas-phase reaction device of the present invention can simultaneously realize light field, thermal field, magnetic field, and electric field conditions by arranging light holes, electrode assemblies, heating assemblies, insulation assemblies, and magnetic field assemblies in the reaction section of the reaction tube, thereby carrying out gas-phase catalytic reactions, realizing integrated regulation of multi-energy field catalytic reactions in one device, and improving the rate of gas-phase catalytic reactions.

[0013] It should be noted that in the present invention, a cooling medium is introduced into the shell through a coolant inlet and a coolant outlet to cool the reaction tube. The length of the cooling medium layer is 10-300 mm, for example, 10 mm, 50 mm, 150 mm, 250 mm, 300 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0014] The width is 10-200mm, for example, 10mm, 20mm, 40mm, 60mm, 80mm, 100mm, 150mm, 200mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0015] The thickness is 1-6 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0016] As a preferred technical solution of the present invention, the light hole includes a lens.

[0017] Preferably, the lens is made of quartz.

[0018] Preferably, a fixing ring is provided on the periphery of the lens; the fixing ring is used to fix the lens on the housing.

[0019] In the present invention, a fixing ring is provided on the periphery of the lens to facilitate sealing and prevent leakage of reaction gas.

[0020] Preferably, the distance between the reaction section and the light hole is 1-200 mm, for example, 1 mm, 5 mm, 10 mm, 20 mm, 50 mm, 100 mm, 150 mm, 180 mm, 200 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0021] Preferably, the ratio of the area of ​​the reaction section projected on the front surface of the shell to the area of ​​the light hole is 1:(1-10), for example, 1:1, 1:2, 1:3, 1:4, 1:6, 1:8 or 1:10, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0022] As a preferred technical solution of the present invention, the electrode assembly includes a cathode and an anode.

[0023] Preferably, the inner diameter of the electrode assembly is 1-5 mm, such as 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0024] The outer diameter is 3-8 mm, for example, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0025] As a preferred technical solution of the present invention, the length of the heating component is 10-240 mm, for example, 10 mm, 20 mm, 50 mm, 100 mm, 150 mm, 200 mm, 220 mm, 240 mm, etc., but is not limited to the listed values. Other unlisted values ​​within the above numerical range are also applicable.

[0026] The width is 10-50 mm, such as 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0027] The thickness is 1-6 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0028] Preferably, the length of the insulation component is 10-300 mm, for example, 10 mm, 50 mm, 150 mm, 250 mm, 300 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0029] The width is 10-200mm, for example, 10mm, 20mm, 40mm, 60mm, 80mm, 100mm, 150mm, 200mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0030] The thickness is 1-20 mm, for example, 1 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 15 mm, 20 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0031] Preferably, the diameters of the coolant inlet and the coolant outlet are 1-5 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc., but are not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0032] As a preferred technical solution of the present invention, the magnetic field assembly includes a magnetic field layer and a magnetic field shielding layer; the magnetic field layer and the magnetic field shielding layer are sequentially arranged from the inside to the outside.

[0033] Preferably, the length of the magnetic field layer is 10-300 mm, such as 10 mm, 50 mm, 150 mm, 250 mm, 300 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0034] The width is 5-20 mm, for example, 5 mm, 8 mm, 10 mm, 12 mm, 15 mm, 18 mm, 20 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0035] The thickness is 1-10 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0036] Preferably, the length of the magnetic field shielding layer is 10-350 mm, for example, 10 mm, 50 mm, 150 mm, 250 mm, 300 mm, 350 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0037] The width is 10-210mm, for example, 10mm, 20mm, 40mm, 60mm, 80mm, 100mm, 150mm, 200mm, 210mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0038] The thickness is 1-5 mm, such as 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0039] As a preferred technical solution of the present invention, the material of the reaction tube includes quartz.

[0040] Preferably, the reaction section is further provided with a temperature detection component.

[0041] The temperature detection device of the present invention is arranged in the reaction section of the reaction tube and is used for real-time detection of the photothermal temperature in the reaction section.

[0042] Preferably, the reaction section is a flat tube; and the air inlet section and the air outlet section are both round tubes.

[0043] Preferably, the length of the flat tube is 5-50 mm, for example, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0044] The width is 5-50mm, for example, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0045] The height is 1-10mm, for example, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, etc., but is not limited to the listed values. Other unlisted values ​​within the above numerical range are also applicable, and 2mm is more preferably used.

[0046] Preferably, the diameters of the air inlet section and the air outlet section are 2-50 mm, respectively, for example, 2 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc., but are not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0047] It should be noted that the present invention does not impose any specific requirements or restrictions on the preparation method of the flat tube. The flat tube in the present invention can be made by flattening a round tube, or by high-temperature welding two upper and lower transparent quartz plates to the round tubes at both ends.

[0048] Preferably, the shape of the shell includes a cube, a rectangular parallelepiped or a cylinder.

[0049] Preferably, the gas phase reaction unit further comprises a bottom plate, and the shell is arranged on the bottom plate.

[0050] It should be noted that the position of the housing in the present invention can be adjusted by means of the track and the lifting platform on the bottom plate, so that the light can be fully utilized.

[0051] In the second aspect, the present invention provides a multi-energy field catalytic gas-phase reaction system, which includes the multi-energy field catalytic gas-phase reaction device, temperature control device, electric field control device, magnetic field control device, light field control device, general control device, analysis unit and gas supply unit described in the first aspect; the temperature control device, electric field control device, magnetic field control device and light field control device are respectively connected to the general control device.

[0052] As a preferred technical solution of the present invention, the temperature control device is connected to the heating device and the heat preservation device respectively.

[0053] Preferably, the electric field control device is connected to the electrode assembly; the working modes of the electric field control device include a solid electrolyte mode and a high voltage mode.

[0054] Preferably, the magnetic field control device is connected to the magnetic field assembly, and the working modes of the magnetic field control device include a constant current mode, an alternating current mode and a pulsed ultra-high current mode.

[0055] Preferably, the gas supply unit is connected to the gas inlet section of the reaction tube; and the analysis unit is connected to the gas outlet section of the reaction tube.

[0056] In a third aspect, the present invention provides a multi-energy field catalytic reaction method, which is performed using the multi-energy field catalytic gas phase reaction system described in the second aspect, and comprises the following steps:

[0057] The catalyst is placed in the reaction section of the reaction tube, and the light source is irradiated on the reaction section through the light hole; the temperature control device, the electric field control device, and the magnetic field control device are respectively connected to the power supply, and the gas supply unit is connected to the air inlet section to connect the reaction gas and perform a multi-energy field catalytic reaction; the analysis unit is connected to the air outlet section to detect the reaction products.

[0058] It should be noted that during use of the reaction section, after adding the photothermal catalyst, asbestos pads are placed on both sides of the reaction section to prevent the catalyst from being blown into the connected detector. The present invention does not impose specific requirements or restrictions on the choice of light source; it can be sunlight or a simulated light source, such as a xenon lamp. When the light source is sunlight, a focusing device is required to focus the sunlight onto the light aperture.

[0059] As a preferred technical solution of the present invention, the flow rate of the reaction gas is 0-300 mL·min -1 , and does not include 0, for example 1 mL min -1 、10mL·min -1 、50mL·min -1 、100mL·min-1 、150mL·min -1 、200mL·min -1 、250mL·min -1 、300mL·min -1 etc., but are not limited to the listed values, and other values ​​not listed within the above numerical range are also applicable.

[0060] Preferably, the current of the electric field control device is 0-5A, and does not include 0, such as 0.1A, 0.2A, 0.5A, 1.0A, 2.0A, 3.0A, 5.0A, etc., but is not limited to the listed values. Other unlisted values ​​within the above numerical range are also applicable.

[0061] Preferably, the temperature of the temperature control device is 0-800°C, excluding 0, such as 1°C, 50°C, 100°C, 200°C, 400°C, 600°C, 800°C, etc., but is not limited to the listed values. Other unlisted values ​​within the above numerical range are also applicable.

[0062] Preferably, the magnetic field strength of the magnetic field control device is 0-5T, excluding 0, such as 10mT, 50mT, 100mT, 200mT, 500mT, 800mT, 1000mT, 1500mT, 2000mT, 3000mT, 4000mT, 5000mT, etc., but is not limited to the listed values. Other values ​​not listed within the above numerical range are also applicable.

[0063] Compared with the prior art, the present invention has at least the following beneficial effects:

[0064] The multi-energy field catalytic gas-phase reaction device of the present invention can simultaneously realize light field, thermal field, magnetic field, and electric field conditions by arranging light holes, electrode assemblies, heating assemblies, insulation assemblies, and magnetic field assemblies in the reaction section of the reaction tube, thereby carrying out gas-phase catalytic reactions, realizing integrated regulation of multi-energy field catalytic reactions in one device, and improving the rate of gas-phase catalytic reactions. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 This is a schematic diagram of a multi-energy field catalytic gas phase reaction system provided by the present invention.

[0066] Figure 2 It is a side view of a multi-energy field catalytic gas phase reaction device provided by the present invention.

[0067] Figure 3 This is a front view of a multi-energy field catalytic gas phase reaction device provided by the present invention.

[0068] Figure 4It is a top view of a reaction tube of a multi-energy field catalytic gas phase reaction device provided by the present invention.

[0069] Figure 5 It is a catalytic performance diagram of Application Example 1 of the present invention and Comparative Application Example 1.

[0070] Figure 6 It is a catalytic performance diagram of Application Example 2 of the present invention and Comparative Application Example 2.

[0071] Among them, 1-heating component; 2-insulation component; 3-cooling medium layer; 4-magnetic field layer; 5-magnetic field shielding layer; 6-electrode assembly; 7-light hole; 8-temperature detection component; 9-mass spectrometer injector; 10-catalyst bed; 11-coolant outlet; 12-coolant inlet. DETAILED DESCRIPTION

[0072] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. However, the following examples are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

[0073] Example 1

[0074] This embodiment provides a multi-energy field catalytic gas-phase reaction device, which includes a reaction tube; the reaction tube is covered with a shell; an electrode assembly 6 is further provided between the reaction tube and the shell; the shell is provided with a heating assembly 1, a heat preservation assembly 2, and a magnetic field assembly in sequence from the inside to the outside; and a coolant inlet 12 and a coolant outlet 11 are further provided on both sides of the shell;

[0075] The cooling medium is introduced into the shell through the coolant inlet 12 and the coolant outlet 11 to form a cooling medium layer 3; the cooling medium layer 3 has a length of 300 mm, a width of 200 mm, and a thickness of 6 mm;

[0076] The housing is provided with a light hole 7; the reaction tube comprises an air inlet section, a reaction section and an air outlet section connected in sequence; the reaction section is arranged inside the housing, and its front projection is located in the area of ​​the light hole 7;

[0077] One end of the air inlet section away from the reaction section extends out of the housing through the first through hole and is connected to the air supply unit; one end of the air outlet section away from the reaction section extends out of the housing through the second through hole and is connected to the analysis unit;

[0078] The light hole 7 is a lens; the material of the lens is quartz; a fixing ring is provided on the periphery of the lens; the fixing ring is used to fix the lens on the housing; the ratio of the area of ​​the reaction section projected on the front of the housing to the area of ​​the light hole 7 is 1:1;

[0079] The electrode assembly 6 includes a cathode and an anode; the inner diameter of the electrode assembly is 2 mm and the outer diameter is 3 mm;

[0080] The heating component 1 has a length of 240 mm, a width of 50 mm, and a thickness of 6 mm; the insulation component 2 has a length of 300 mm, a width of 200 mm, and a thickness of 20 mm; the coolant inlet 12 and the coolant outlet 11 have diameters of 2 mm respectively;

[0081] The magnetic field assembly includes a magnetic field layer 4 and a magnetic field shielding layer 5; the magnetic field layer 4 and the magnetic field shielding layer 5 are sequentially arranged from the inside to the outside; the magnetic field layer 4 has a length of 300 mm, a width of 20 mm, and a thickness of 10 mm; the magnetic field shielding layer 5 has a length of 350 mm, a width of 210 mm, and a thickness of 2 mm;

[0082] The material of the reaction tube includes quartz; the reaction section is also provided with a temperature detection component 8; the reaction tube is a flat tube; the air inlet section and the air outlet section are both round tubes;

[0083] The width of the flat tube is 12 mm, the length is 14 mm, and the height is 2 mm. The inner diameter of the air inlet section and the air outlet section of the reaction tube is 5 mm, and the outer diameter is 8 mm. The shape of the shell is a cube.

[0084] Preparation Example 1

[0085] This preparation example provides a multi-energy field catalytic gas-phase reaction system, which includes the multi-energy field catalytic gas-phase reaction device described in Example 1, a temperature control device, an electric field control device, a magnetic field control device, a light field control device, a general control device, an analysis unit, and a gas supply unit; the temperature control device, the electric field control device, the magnetic field control device, and the light field control device are respectively connected to the general control device;

[0086] The temperature control device is connected to the heating device and the insulation device respectively; the electric field control device is connected to the electrode assembly; the working modes of the electric field control device include solid electrolyte mode and high voltage mode; the magnetic field control device is connected to the magnetic field assembly, and the working modes of the magnetic field control device include constant current mode, alternating current mode and pulse ultra-high current mode; the gas supply unit is connected to the gas inlet section of the reaction tube; and the analysis unit is connected to the gas outlet section of the reaction tube.

[0087] Application Example 1

[0088] This application example provides a multi-energy field catalytic reaction method, which is carried out using the multi-energy field catalytic gas phase reaction system described in Preparation Example 1. The method includes the following steps:

[0089] 100 mg of catalyst was placed in the reaction section of the reaction tube, and a xenon lamp was turned on as a light source. The distance between the xenon lamp and the light hole 7 was 5 mm, so that the light source irradiated the reaction section through the light hole 7; the electric field control device and the magnetic field control device were respectively connected to power, and the gas supply unit was connected to the gas inlet section to communicate the reaction gases methane and oxygen;

[0090] The catalyst is Fe3O4 / Au / ZnO; the flow rate of the reaction gas methane is 2 mL / min; the generated magnetic field strength is 700 mT; the current is 200 mA; a photo-, magnetic-, and electro-catalytic methane oxidative coupling reaction is performed; and the reaction product is detected by connecting the gas outlet section through the analysis unit.

[0091] Application Example 2

[0092] This application example provides a multi-energy field catalytic reaction method, which is carried out using the multi-energy field catalytic gas phase reaction system described in Preparation Example 1. The method includes the following steps:

[0093] 100 mg of catalyst was placed in the reaction section of the reaction tube, and a xenon lamp was turned on as a light source. The distance between the xenon lamp and the light hole 7 was 5 mm, so that the light source irradiated the reaction section through the light hole 7; the temperature control device was powered on, and the gas supply unit was connected to the gas inlet section to communicate the reaction gases methane and carbon dioxide;

[0094] The catalyst is Ni@TS-1; the flow rate of the reaction gas methane is 10 mL / min; the reaction temperature is controlled at 400° C. to carry out a photothermal catalytic methane dry reforming reaction; and the gas outlet section is connected via the analysis unit to detect the reaction product.

[0095] Comparative Application Example 1

[0096] This comparative application example provides a multi-energy field catalytic reaction method, which is carried out using the multi-energy field catalytic gas phase reaction system described in Preparation Example 1. The only difference from Application Example 1 is that the magnetic field and electric field are not connected, and the other operating steps and condition parameters are the same as those in Application Example 1.

[0097] Comparative Application Example 2

[0098] This comparative application example provides a multi-energy field catalytic reaction method, which is carried out using the multi-energy field catalytic gas phase reaction system described in Preparation Example 1. The only difference from Application Example 2 is that the light field is not connected, and the other operating steps and condition parameters are the same as those in Application Example 2.

[0099] Performance Testing

[0100] The ethane generation rate of Application Example 1 and Comparative Application Example 1 and the carbon monoxide generation rate of Application Example 2 and Comparative Application Example 2 were tested, and the results are as follows: Figure 5 and Figure 6 shown.

[0101] Performance Analysis

[0102] (1) By comparing Application Example 1 with Comparative Application Example 1, it can be seen that the ethane production rate of the photo-, magnetic-, and electrocatalytic methane oxidative coupling reaction in Application Example 1 is 221.9 μmol·g -1 ·h -1 In contrast, in Comparative Application Example 1, no magnetic field or electric field was applied, which resulted in a decrease in the rate of the catalytic reaction, with the ethane production rate dropping to 71.6 μmol·g -1 ·h -1 .

[0103] (2) By comparing Application Example 2 and Comparative Application Example 2, it can be seen that the carbon monoxide generation rate of the photothermal catalytic methane dry reforming reaction in Application Example 2 is 8.6 mmol·g -1 ·h -1 In contrast, in Example 2, no light field was applied, which resulted in a decrease in the rate of the catalytic reaction, with the carbon monoxide generation rate dropping to 1.2 mmol·g -1 ·h -1 .

[0104] In summary, the present invention provides a multi-energy field catalytic gas-phase reaction device and a multi-energy field catalytic reaction method. The multi-energy field catalytic gas-phase reaction device of the present invention can simultaneously realize light field, thermal field, magnetic field, and electric field conditions by arranging light holes, electrode assemblies, heating assemblies, insulation assemblies, and magnetic field assemblies in the reaction section of the reaction tube, and carry out gas-phase catalytic reactions, thereby realizing integrated regulation of multi-energy field catalytic reactions in one device and improving the rate of gas-phase catalytic reactions.

[0105] The applicant declares that the above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A multi-energy field catalytic gas phase reaction device, characterized in that: The multi-energy field catalytic gas phase reaction device includes a reaction tube; the reaction tube is covered with a shell; an electrode assembly is further provided between the reaction tube and the shell; the shell is provided with a heating assembly, a heat preservation assembly and a magnetic field assembly in sequence from the inside to the outside; and a coolant inlet and a coolant outlet are further provided on both sides of the shell; The shell is provided with a light hole; the reaction tube includes an air inlet section, a reaction section and an air outlet section connected in sequence; the reaction section is arranged inside the shell, and its front projection is located in the light hole area; One end of the air inlet section away from the reaction section extends out of the shell through the first through hole; and one end of the air outlet section away from the reaction section extends out of the shell through the second through hole.

2. The multi-energy field catalytic gas phase reaction device according to claim 1, characterized in that: The light hole includes a lens; Preferably, the material of the lens includes quartz; Preferably, a fixing ring is provided on the periphery of the lens; the fixing ring is used to fix the lens on the housing; Preferably, the distance between the reaction section and the light hole is 1-200 mm; Preferably, the ratio of the area of ​​the reaction section projected on the front surface of the housing to the area of ​​the light hole is 1:(1-10).

3. The multi-energy field catalytic gas phase reaction device according to claim 1 or 2, characterized in that: The electrode assembly includes a cathode and an anode; Preferably, the inner diameter of the electrode assembly is 1-5 mm, and the outer diameter is 3-8 mm.

4. The multi-energy field catalytic gas phase reaction device according to any one of claims 1 to 3, characterized in that: The heating component has a length of 10-240 mm, a width of 10-50 mm, and a thickness of 1-6 mm; Preferably, the insulation component has a length of 10-300 mm, a width of 10-200 mm, and a thickness of 1-20 mm; Preferably, the coolant inlet and the coolant outlet have diameters of 1-5 mm respectively.

5. The multi-energy field catalytic gas phase reaction device according to any one of claims 1 to 4, characterized in that: The magnetic field assembly includes a magnetic field layer and a magnetic field shielding layer; the magnetic field layer and the magnetic field shielding layer are sequentially arranged from the inside to the outside; Preferably, the magnetic field layer has a length of 10-300 mm, a width of 5-20 mm, and a thickness of 1-10 mm; Preferably, the magnetic field shielding layer has a length of 10-350 mm, a width of 10-210 mm, and a thickness of 1-5 mm.

6. The multi-energy field catalytic gas phase reaction device according to any one of claims 1 to 5, characterized in that: The material of the reaction tube includes quartz; Preferably, the reaction section is further provided with a temperature detection component; Preferably, the reaction section is a flat tube; the air inlet section and the air outlet section are both round tubes; Preferably, the flat tube has a length of 5-50 mm, a width of 5-50 mm, and a height of 1-10 mm; Preferably, the diameters of the air inlet section and the air outlet section are 2-50 mm respectively; Preferably, the shape of the shell includes a cube, a rectangular parallelepiped or a cylinder.

7. A multi-energy field catalytic gas phase reaction system, characterized in that: The multi-energy field catalytic gas-phase reaction system includes the multi-energy field catalytic gas-phase reaction device described in any one of claims 1-6, a temperature control device, an electric field control device, a magnetic field control device, a light field control device, a general control device, an analysis unit and a gas supply unit; the temperature control device, the electric field control device, the magnetic field control device, and the light field control device are respectively connected to the general control device.

8. The multi-energy field catalytic gas phase reaction system according to claim 7, characterized in that: The temperature control device is connected to the heating device and the heat preservation device respectively; Preferably, the electric field control device is connected to the electrode assembly; the working modes of the electric field control device include solid electrolyte mode and high voltage mode; Preferably, the magnetic field control device is connected to the magnetic field assembly, and the working modes of the magnetic field control device include constant current mode, alternating current mode and pulse ultra-high current mode; Preferably, the gas supply unit is connected to the gas inlet section of the reaction tube; and the analysis unit is connected to the gas outlet section of the reaction tube.

9. A multi-energy field catalytic reaction method, characterized in that: The multi-energy field catalytic reaction method is performed using the multi-energy field catalytic gas phase reaction system according to claim 7 or 8, and the method comprises the following steps: The catalyst is placed in the reaction section of the reaction tube, and the light source is irradiated on the reaction section through the light hole; the temperature control device, the electric field control device, and the magnetic field control device are respectively connected to the power supply, and the gas supply unit is connected to the air inlet section to connect the reaction gas and perform a multi-energy field catalytic reaction; the analysis unit is connected to the air outlet section to detect the reaction products.

10. The multi-energy field catalytic reaction method according to claim 9, characterized in that: The flow rate of the reaction gas is 0-300 mL·min -1 , excluding 0; Preferably, the current of the electric field control device is 0-5A, excluding 0; Preferably, the temperature of the temperature control device is 0-800°C, excluding 0; Preferably, the magnetic field strength of the magnetic field control device is 0-5T, excluding 0.

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