137 results about "Adsorption equilibrium" patented technology

The invention discloses a test system and method for a low-temperature anhydrous fracturing adsorption saturated coal rock reservoir, the system comprises a reaction kettle and a liquid nitrogen storage tank, and an injection pipe on the liquid nitrogen storage tank is connected with a self-pressurization liquid nitrogen tank; a port of the injection pipe is formed in the upper part of the interior of the liquid nitrogen storage tank; the interior of the liquid nitrogen storage tank is connected with the supercharging device; a bottom outlet of the liquid nitrogen storage tank is connected with the vacuum pump and the reaction kettle respectively; a fracturing pipe connector is vertically arranged in the middle of the reaction kettle cover, the fracturing pipe is located in the sample, the lower end is blocked, and a side hole is formed in the side wall; the upper end, outside the reaction kettle, of the fracturing pipe connector is connected with a liquid nitrogen storage tank, a vacuum pump and a seventh control valve; and the reaction kettle is connected with the methane tank (adsorption saturation). According to the invention, liquid nitrogen is used as a low-temperature fluid, and a coal body sample with balanced adsorption is fractured under large displacement and high pressure, so that a coal rock fracture process, a temperature conduction process and a monitoring process in a liquid nitrogen fracturing process are really simulated under a low-temperature condition.

The invention discloses a CO2 coal seam CH4 gas competitive adsorption heat effect testing method and device, and belongs to the field of coal mines. The method comprises the following steps: loading a dry coal sample into a non-contact temperature measurement coal sample tank, and measuring the free space volume V0 in the non-contact temperature measurement coal sample tank; different environment temperatures and competitive adsorption pressures are set, the first step is repeated for multiple times, multiple first data sets are obtained, a relation curve of eta and delta T is obtained, and each first data set comprises the competitive adsorption replacement ratio eta of CO2 and CH4 gas and the heat effect delta T of the competitive adsorption equilibrium coal sample. The method has no influence on the replacement effect during testing, enables the measurement result to be accurate, can obtain the gas competitive adsorption and gas reciprocal diffusion rules in the process of replacing the CH4 in the coal seam by the CO2, can deeply analyze the driving mechanism and the action efficiency of the CH4 in the coal seam by the CO2 from the perspective of energy migration, and can improve the detection accuracy. And a theoretical support is provided for realizing reasonable optimization and efficiency maximization of key control parameters.

The invention discloses a smelting wastewater trace arsenic real-time monitoring method based on an electrochemical sensing array, and relates to the technical field of electrochemical detection.The method comprises the steps that bypass sample flow is established through a peristaltic pump and pre-filtered, and stable sample flow is obtained; the sample flow is divided into a first passage and a second passage, and a form distinguishing sample flow is obtained after oxidation setting and medium equalization; performing short-time adsorption equilibrium to obtain an interface state parameter set, executing multi-segment coded deposition control based on the parameter set, and collecting a dissolution current curve; a dissolution signal set is obtained by applying single-frequency perturbation signals, characteristic peak parameters are extracted and subjected to correlation calculation with a multi-section response matrix, the total arsenic concentration and the pentavalent arsenic concentration are calculated through a weighted inversion algorithm, and a confidence interval is obtained; and calculating the concentration of the trivalent arsenic and determining an uncertainty range according to the two. According to the method, the quality judgment result is linked with the dynamic adjustment of the sampling flow, the potential amplitude and the deposition duration, so that the self-adaptive optimization control of the detection process is realized.

The invention relates to the technical field of gas separation membranes, in particular to a gas separation membrane based on a covalent organic framework and a preparation method and application thereof, and the preparation method comprises the following steps: preparing a mixed solution containing a polyamine monomer, a polyaldehyde monomer and an organic solvent, and reacting to obtain a COF material; the preparation method comprises the following steps: preparing an amine micromolecule aqueous solution, adding a COF material, and mixing until adsorption equilibrium to obtain NH2-COF; preparing a water-phase reaction solution containing NH2-COF and an organic-phase reaction solution containing multi-acyl chloride; the water-phase reaction liquid is in contact with the surface of the support membrane, and is in contact with the organic-phase reaction liquid after excess liquid is removed, and a nascent state COF membrane is obtained through reaction; and carrying out heat treatment on the nascent state COF membrane at 30-90 DEG C for 1-30 minutes to obtain the COF gas separation membrane. The gas separation membrane prepared by the invention can realize efficient separation of carbon dioxide / nitrogen and carbon dioxide / methane, and solves the problem of low selectivity of a COF membrane in separation of carbon dioxide / nitrogen and carbon dioxide / methane in the prior art.

The invention discloses a modified mesoporous silica adsorbent as well as a preparation method and application thereof, and relates to the technical field of porous material preparation. The preparation method of the modified mesoporous silica adsorbent provided by the invention comprises the following steps: hydrolyzing a silicon source in a solution containing a template agent to form a preliminary framework of silica, then adding a silane coupling agent containing at least one of sulfydryl, sulfonyl and amino, carrying out a hydrothermal reaction at 60-120 DEG C, and removing the template agent to obtain the modified mesoporous silica adsorbent. The modified mesoporous silica adsorbent capable of selectively adsorbing zirconium and hafnium can be obtained. The modified mesoporous silica adsorbent prepared by the method is used for adsorbing and enriching zirconium and hafnium ions, the adsorption capacities of 6.23 mg / g and 5.95 mg / g or above can be obtained respectively, the adsorption capacity is excellent, and the adsorbent can reach adsorption equilibrium within 10 min and is excellent in adsorption rate.

A gas separation method includes supplying a mixed gas to a zeolite membrane complex and permeating a high permeability gas through the zeolite membrane complex to separate the high permeability gas from other gases. The mixed gas includes a high permeability gas and a trace gas that is lower in concentration than the high permeability gas. The molar concentration of a first gas included in the trace gas in the mixed gas is higher than the molar concentration of a second gas included in the trace gas in the mixed gas. The adsorption equilibrium constant of the first gas on the zeolite membrane is less than 60 times that of the high permeability gas. The adsorption equilibrium constant of the second gas on the zeolite membrane is 400 times or more that of the high permeability gas.

A method and apparatus for determining the gas content of a deep coalbed methane reservoir, and a readable storage medium. The method comprises: acquiring a baseline transverse relaxation time spectrum of a dried reservoir rock sample, transverse relaxation time spectra before adsorption equilibrium at different pressure points and transverse relaxation time spectra after adsorption equilibrium at different pressure points; on the basis of the baseline transverse relaxation time spectrum, the transverse relaxation time spectra before adsorption equilibrium at different pressure points and the transverse relaxation time spectra after adsorption equilibrium at different pressure points, determining corrected transverse relaxation time spectra after adsorption equilibrium at different pressure points; obtaining actual free gas contents at different pressure points and actual adsorbed gas contents at different pressure points; and constructing a gas content determination model for outputting the gas content of a deep coalbed methane reservoir to be tested. T2 cutoff values of adsorbed gas and free gas are redefined to accurately calculate an adsorbed gas content and a free gas content, such that the precision of calculation of the gas content of a reservoir can be improved.

The invention belongs to the field of chemical materials, particularly relates to pyrenyl beta-cyclodextrin magnetic graphene oxide gel, a preparation method of the pyrenyl beta-cyclodextrin magnetic graphene oxide gel and application of the pyrenyl beta-cyclodextrin magnetic graphene oxide gel in food safety detection, and discloses the pyrenyl beta-cyclodextrin magnetic graphene oxide gel. The gel is obtained by covalent bond connection and supramolecular interaction-host-guest assembly of magnetic graphene oxide, beta-cyclodextrin molecules and pyrene derivatives. The gel belongs to a lamellar stacked three-dimensional structure, and compared with traditional gel, the gel has the advantages that the overall pore diameter is increased, the separation flux is improved, the separation efficiency is improved, adsorption equilibrium can be quickly achieved within 0.5 min, and specific separation and adsorption of mycotoxin in a complex food sample are facilitated.

The invention discloses an application of a thiourea modified charcoal adsorbent in adsorption of ciprofloxacin. The preparation method comprises the following steps: grinding and uniformly mixing rice straw powder, thiourea and sodium carbonate, pyrolyzing in inert gas, cooling, grinding and sieving to obtain a biochar material; and washing, carrying out suction filtration and drying to obtain the thiourea modified charcoal adsorbent. The thiourea modified biochar adsorbent is used for carrying out an adsorption experiment on 50 mg / L of CIP, the maximum adsorption capacity of the thiourea modified biochar adsorbent on the CIP is 444.8 mg / g after 60 minutes, the removal rate of the CIP reaches 99.7% when adsorption is balanced, excellent adsorption performance is shown, and the thiourea modified biochar adsorbent can be used as a good adsorbent for controlling ciprofloxacin pollution.

The working electrode is characterized in that the working electrode is obtained by dispensing ferroferric oxide and lauric acid on the surface of a glassy carbon electrode. A working electrode for detecting the micro-plastic is a working electrode, an Ag / AgCl electrode is a reference electrode, and platinum is an auxiliary electrode; preparing a series of concentrations of micro-plastic standard sample solutions, preparing a ferrocene solution and an electrolyte, firstly putting a working electrode, a reference electrode and an auxiliary electrode into the standard sample solutions, incubating to reach adsorption equilibrium, then taking out the three electrodes, putting the three electrodes into the ferrocene solution, and incubating; and finally, taking out the three-electrode system, putting the three-electrode system into electrolyte, and carrying out DPV detection. A simple and low-cost electrochemical sensing detection method is established by utilizing the reaction of the micro-plastic reinforced ferrocene signal molecules. The method is rapid, simple and low in cost, and can effectively detect the micro-plastics in a wide range and maintain good sensitivity.

The invention discloses a preparation method of a titanium lithium ion sieve type adsorbent with high adsorption performance, which comprises the following steps: S1, respectively mixing a lithium source and a titanium compound with absolute ethyl alcohol to obtain a solution A and a solution B; s2, slowly dripping A into the solution B, and stirring to obtain a mixed solution C; s3, dissolving a carbon-containing complexing agent in absolute ethyl alcohol to obtain a solution D; s4, dropwise adding the mixed solution D into the solution C, drying, and then roasting to obtain a lithium ion sieve precursor; and S5, carrying out elution treatment on the lithium ion sieve precursor to obtain the titanium lithium ion sieve type adsorbent with high adsorption performance. By introducing the carbon-containing complexing agent into the reaction and optimizing the conditions of roasting treatment and elution treatment, the solution loss rate of titanium can be reduced, and the adsorption surface area can be enlarged, so that the adsorption sites are increased, the adsorption capacity is improved, the cycling stability and the adsorption rate are enhanced, and the adsorption equilibrium time is shortened.

A gas separation method includes supplying a mixed gas to a zeolite membrane complex and permeating a high permeability gas through the zeolite membrane complex to separate the high permeability gas from other gases. The mixed gas includes a high permeability gas and a trace gas that is lower in concentration than the high permeability gas. The trace gas contains an organic substance whose molar concentration in the mixed gas is higher than or equal to 1.0 mol %. The adsorption equilibrium constant of the organic substance on the zeolite membrane is less than 150 times the adsorption equilibrium constant of the high permeability gas.

The invention provides a method and device for determining the gas content of a deep coal rock gas reservoir and a readable storage medium, and belongs to the technical field of oil-gas exploration. The method comprises the following steps: acquiring a substrate transverse relaxation time spectrum of a dried reservoir rock sample, transverse relaxation time spectrums before adsorption equilibrium at different pressure points and transverse relaxation time spectrums after adsorption equilibrium at different pressure points; based on the substrate transverse relaxation time spectrum, the transverse relaxation time spectrums before adsorption equilibrium at different pressure points and the transverse relaxation time spectrums after adsorption equilibrium at different pressure points, transverse relaxation time correction spectrums after adsorption equilibrium at different pressure points are determined; obtaining actual free gas volumes under different pressure points and actual adsorption gas volumes under different pressure points; and constructing a gas content determination model for outputting the gas content of the deep coal and rock gas reservoir to be detected. By redefining the T2 cut-off values of the adsorption gas and the free gas, the adsorption gas amount and the free gas amount are accurately calculated, and the calculation precision of the gas content of the reservoir can be improved.

The present application provides a method for treating perfluorinated compound-containing wastewater rapidly. The method comprises the steps of: preparing an oxy-chloride iron adsorbent by pyrolyzing a raw material of ferric chloride; and treating the perfluorinated compound-containing wastewater by one of the following processes: (i) a batch adsorption process: adding the oxy-chloride iron into the perfluorinated compound-containing wastewater, then constant temperature oscillation, and filtration; or (ii) a dynamic adsorption process: flowing the perfluorinated compound-containing wastewater through an adsorption column filled with the oxy-chloride iron adsorbent, to complete the treatment of the perfluorinated compound-containing wastewater. The present application constructs an intrinsic interface micro-electric field on the surface of the oxy-chloride iron, which significantly accelerates the adsorption kinetics of the perfluorinated compound. The method of the present application is suitable for both batch and dynamic adsorption processes, and exhibits excellent adsorption performance in treating perfluorinated compounds, can reach adsorption equilibrium in 10 minutes, the dynamic adsorption rate is 4.3-6.5 times that of commercial adsorbents, and is easy to regenerate with anti-interference, and has a broad application prospect.

This invention discloses a pretreatment method for detecting trace perfluorinated and polyfluoroalkyl substances (PFAS) in complex matrix textiles, belonging to the field of materials analysis technology. The method involves placing the textile in an alkaline solvent containing an alkyl sulfonate displacing agent. Under heating conditions, the displacing agent utilizes its competitive adsorption mechanism to forcibly occupy matrix adsorption sites and displace the target analytes into the solvent. Subsequently, the temperature is rapidly lowered to the phase separation induction temperature, inducing supersaturation precipitation of the displacing agent, which then encapsulates impurities in situ and co-precipitates, forming a solid-liquid stratified system. Finally, the supernatant is collected for analysis. This invention utilizes the dual properties of the displacing agent—high-temperature solubilization and low-temperature phase change removal—to effectively break the strong adsorption equilibrium of aged textiles without using a solid-phase extraction column. This solves the contradiction between low extraction rate and significant matrix interference, significantly improving the recovery rate of PFAS. It offers advantages such as low cost, simple operation, and high accuracy.

The invention discloses preparation and application of a mesoporous polydopamine drug delivery system with multiple antioxidant functions, and belongs to the technical field of medicines.The drug delivery system is characterized in that plant exosomes with antioxidant and anti-inflammatory performance wrap mesoporous polydopamine to serve as a carrier, and the carrier with antioxidant and anti-inflammatory functions is loaded through an adsorption equilibrium method. A nano drug delivery system of a drug having an anti-inflammatory effect; the constructed nano drug delivery system has multiple antioxidant properties, and can regulate the phenotype of macrophages, increase the release of anti-inflammatory factors and promote the apoptosis of hepatic stellate cells.

The invention belongs to the technical field of salt lake resource development and rare metal recovery, and discloses a fibrous rubidium adsorbent as well as a preparation method and application thereof, a metal-based Prussian blue analogue spinning solution is synthesized in a non-aqueous system through a one-pot method, and the fibrous rubidium adsorbent is directly prepared through wet spinning. The preparation of the powder adsorbent and the molding of the composite material are integrated, so that the process is simplified, and the problem of powder agglomeration is avoided. The prepared fibrous rubidium adsorbent has the rubidium ion adsorption capacity of 248.73 mg / L, achieves adsorption equilibrium within 7 min, is suitable for industrially recovering rubidium from high-salinity salt lake brine, and has remarkable economic and environmental benefits.

The invention relates to an application and a method for efficiently removing Cu and Pb in sewage by using a Ca (BDC) (H2O) 3MOF material. A method for removing Cu < 2 + > or Pb < 2 + > in a water body by using the Ca (BDC) (H2O) 3 comprises the following steps: adding the Ca (BDC) (H2O) 3 into sewage containing Cu < 2 + > or Pb < 2 + >, stirring or oscillating for more than 2 hours, and centrifuging to remove solid precipitate, thereby realizing removal of Cu < 2 + > or Pb < 2 + > pollution. The Ca (BDC) (H2O) 3MOF is high in Cu < 2 + > and Pb < 2 + > removal capacity (the maximum removal capacity is about 400 mg / g and 1000 mg / g) and high in removal speed (adsorption equilibrium can be achieved within 60 min), and the removal mechanism is ion exchange (rear-end separation is simple and convenient, and the problem of secondary pollution of an adsorbent is avoided). Compared with a traditional functional material for adsorbing and removing Cu and Pb in a water body, the technology provided by the invention has obvious advantages and wide future application prospects.

The present invention relates to a method for separating trace plutonium from a large amount of uranium by using a solid phase leaching resin, and belongs to the field of spent fuel post-processing. A spent fuel post-processing simulation liquid containing uranium and plutonium is prepared, and the spent fuel post-processing simulation liquid is pumped into a leaching resin column at a first preset flow rate to perform a dynamic test, and the uranium and plutonium concentration in the aqueous phase at the outlet is analyzed at intervals to draw a penetration curve; an eluent is pumped into the leaching resin column after adsorption equilibrium at a second preset flow rate, and the eluent is used to elute plutonium. The method disclosed in the present invention is used to efficiently separate and purify trace plutonium in a large amount of uranium by using an extraction chromatography method having the characteristics of selectivity of solvent extraction and high efficiency of chromatographic separation, and a solid phase leaching resin with a wide range of acidity applications and high selectivity for Pu is used to achieve efficient separation of trace plutonium in a large amount of uranium, and the separation process does not require acid adjustment, and the operation is simple, the method is simple, the operation is simple, and the practicability is strong, which has a strong promotion advantage.

The present invention relates to a porous carbon in which a slope of an approximate straight line obtained by converting a change in pressure of nitrogen until reaching an adsorption equilibrium at each prescribed relative pressure in measurement of a nitrogen adsorption isotherm into a mass transfer coefficient using the LDF approximation and linearly approximating a relationship between a relative pressure and a mass transfer coefficient at a relative pressure of 1.0 × 10-4 or more and 1.0 × 10-3 or less is 4 or more, and a pore volume of pores having a pore diameter of 2 nm or more and 200 nm or less calculated from the nitrogen adsorption isotherm by a BJH method is 0.8 cm3 / g or more.

The invention discloses a preparation method of a manganese ferrite modified biochar adsorbent as well as a product and application of the manganese ferrite modified biochar adsorbent, and belongs to the technical field of environmental functional materials and biomass resource utilization. The adsorbent is prepared by using straw as a raw material and adopting a coprecipitation method, and has the characteristics of high efficiency, environmental protection and magnetic separation, and the preparation method comprises the following steps: S1, dispersing straw powder, ferric trichloride hexahydrate and manganese sulfate monohydrate in ultrapure water, mixing and stirring, and adjusting the pH value to alkalescence; s2, the mixed solution is washed to be neutral and then dried; and S3, pyrolyzing the mixture in inert gas, cooling, grinding, and sieving to obtain the manganese ferrite modified charcoal adsorbent. The maximum adsorption capacity of the adsorbent provided by the invention for NOR of 30 mg / L after 120 minutes is 33.14 mg / g, the removal rate of the adsorbent for NOR during adsorption equilibrium reaches 86.6%, and the reuse performance test of NOR shows that the recovery rate is still kept at about 70% after five times of circulation.

The application discloses a method for determining a reasonable displacement pressure of liquid carbon dioxide phase change displacement of coal seam gas, and specifically comprises the following steps: S1, performing an isothermal adsorption experiment on a coal sample of a target coal seam; S2, respectively calculating virtual saturated vapor pressures of CO2 and CH4 gas; S3, establishing a relationship between gas adsorption potential and gas adsorption equilibrium pressure; S4, respectively calculating densities of CO2 and CH4; S5, respectively calculating adsorption spaces of CO2 and CH4 in a coal body; S6, establishing a relationship formula between adsorption potentials of the two kinds of gas and the adsorption spaces; S7, determining a reasonable displacement pressure; S8, determining a reasonable displacement pressure; S9, calculating a CO2 percolation coefficient; S10, determining a reasonable percolation pressure; and S11, determining a reasonable injection pressure. The method provides scientific guidance for popularization and application of the liquid CO2 phase change displacement technology of CH4 in a coal seam.

The invention belongs to the field of selective adsorbents, and particularly relates to a rubidium and cesium ion selective adsorbent based on a graphene composite material and application thereof.The rubidium and cesium ion selective adsorbent is prepared by conducting surface carboxyl activation and crown ether grafting on the surface of a three-dimensional cross-linked graphene skeleton to obtain a crown ether functionalized graphene composite material; and performing in-situ growth of copper ferrocyanide nanoclusters on the crown ether functionalized graphene composite material. The rubidium cesium ion selective adsorbent realizes efficient selective adsorption of Rb < + > and Cs < + >, reaches adsorption equilibrium within 30 min in simulated high-level liquid waste, has Cs < + > and Rb < + > saturated adsorption capacities of 185 mg / g and 142 mg / g respectively, and has excellent acid-base stability and electrochemical regeneration capacity.

The application discloses a method for measuring internal diffusion coefficient and surface interfacial permeability of porous materials, which comprises the following steps: measuring the change of desorption amount of the porous materials under the condition of being swept by a carrier gas after adsorption equilibrium by using a zero-length column method; determining the initial time of desorption of the porous materials according to the change data of adsorbate concentration signal of the empty tube experiment under the same test condition; processing the obtained change data of desorption amount, integrating the desorption concentration with respect to time, so as to obtain the change data of the desorption mass fraction; determining the limiting mechanism of the mass transfer process of the porous materials, establishing a mass conservation equation for describing the test system of the porous materials, and obtaining a control equation for describing the change process of the desorption amount through mathematical derivation; and directly and simultaneously obtaining the internal diffusion coefficient and the surface interfacial permeability of the porous materials through calculation and fitting of the control equation obtained through derivation and the change data of the desorption amount of the porous materials measured through experiments.

The invention relates to a method for calculating CO2 saturation adsorption capacity of coal at different temperatures, which belongs to the technical field of carbon dioxide adsorption capacity determination and comprises the following steps: collecting a coal sample, preparing the sample, drying, cooling and canning. Coal quality industrial analysis and density determination; an isobaric desorption method is adopted to measure m CO2 adsorption quantities corresponding to the n experimental temperatures and the m adsorption equilibrium pressures; establishing a mathematical model obeyed by the CO2 adsorption capacity at different temperatures, and determining an undetermined coefficient; programming derivation is carried out, and the maximum value is obtained and is the CO2 saturated adsorption capacity; and drawing adsorption curved surfaces and adsorption isotherms at different temperatures and under different pressures. According to the method, the accuracy and reliability of CO2 saturation adsorption quantity measurement are improved, and the measurement efficiency is improved.

The invention discloses an extraction and purification method and application of malus toringoides leaf and leaf tea polyphenol, and belongs to the field of separation and application of natural plant products. The method comprises the following steps: mixing malus toringoides fruit and leaf dry tea powder with ethanol according to a set material-to-liquid ratio, and carrying out ultrasonic treatment on the mixed solution to obtain a malus toringoides fruit and leaf tea polyphenol crude extract; adding the malus toringoides leaf and leaf polyphenol crude extract into a chromatographic column filled with macroporous resin, and performing elution adsorption with an ethanol solution after adsorption equilibrium is achieved; and recovering the eluent, and freeze-drying to obtain the purified malus toringoides leaf and leaf tea polyphenol extract. The malus toringoides leaf and leaf tea polyphenol extract obtained by the invention has strong free radical scavenging capacity, can effectively inhibit active oxygen of HepG2 cells, and can be used for researching, developing and preparing antioxidant functional foods and medicines.

The present invention relates to a porous carbon in which the change in pressure of nitrogen gas until adsorption equilibrium is reached at each predetermined relative pressure in the measurement of a nitrogen adsorption isotherm is converted into a mass transfer coefficient by using LDF approximation. The slope of an approximation straight line obtained by linearly approximating the relationship between the relative pressure and the mass transfer coefficient when the relative pressure is 1.0 * 10 <-4 > to 1.0 * 10 <-3 > is 4 or more, and the pore volume at which the pore diameter is 2 nm to 200 nm as calculated by the BJH method from the nitrogen adsorption isotherm is 0.8 cm < 3 > / g or more.

The invention discloses a shale gas recoverable reserve determination method and device and a storage medium, and relates to the technical field of shale gas exploitation. The method comprises the following steps: fitting parameters such as a dynamic desorption lag index, a surface site occupancy rate, an adsorption equilibrium constant, an adsorption phase volume maximum value and the like by utilizing shale gas reservoir parameters, experiment numbers of at least six groups of adsorption and desorption experiments and an adsorption and desorption model comprising the dynamic desorption lag index subjected to temperature and pressure changes; different pressure, temperature and excess adsorption capacity are used as fitting variables in the fitting process, so that the fitted parameters, especially the dynamic desorption lag index, can capture the relationship between the desorption lag effect and the temperature and pressure variables, and the relationship between the desorption lag effect and the temperature and pressure variables can be obtained. Therefore, the determination precision of the real gas adsorption amount of the target reservoir under different temperature and pressure conditions is remarkably improved, the recoverable reserves of the shale gas of the target reservoir are determined more accurately, and the accuracy of determining the recoverable reserves is improved.

To provide a substrate processing method, a component processing method, and a substrate processing device, that can remove a substance existing on a surface of a substrate or a component.SOLUTION: In one illustrative embodiment, a method of processing a substrate on a substrate support part disposed in a chamber of a substrate processing device is provided. The method includes the steps of: (a) supplying a process gas including a hydrogen fluoride gas into the chamber; (b) controlling the temperature of the substrate support part to a first temperature and the pressure of the hydrogen fluoride gas in the chamber to a first pressure; and (c) controlling the temperature of the substrate support part to a second temperature and the pressure of the hydrogen fluoride gas in the chamber to a second pressure. In a graph whose horizontal axis is temperature and vertical axis is pressure, the first temperature and the first pressure exist in a first region above an adsorption equilibrium curve of the hydrogen fluoride, and the second temperature and the second pressure exist in a second region below the adsorption equilibrium curve.SELECTED DRAWING: Figure 4

The invention discloses a molecular dynamics simulation method for electron-induced gas desorption, and belongs to the technical field of molecular simulation. The method comprises the following steps: firstly, constructing an aluminum oxide molecular model, and then simulating adsorption equilibrium of hydrogen on the surface of aluminum oxide at different temperatures and air pressures by adopting a giant regular Monte Carlo method to obtain a stable adsorption configuration; then, based on the configuration, an electron force field is adopted to introduce explicit electron particles to simulate electron beam bombardment, and an electron-induced gas desorption kinetic process is simulated under a molecular dynamics framework; and finally, performing quantitative analysis on the desorption product. Through full-atom molecular dynamics simulation, coherent research from gas adsorption to electron-induced desorption is realized, the limitation that related experimental measurement is difficult and a micromechanism is difficult to reveal under a high-voltage condition is overcome, and an effective simulation tool is provided for deeply understanding a physical mechanism of dielectric surface gas desorption-induced discharge.