734 results about "Co2 adsorption" patented technology

The utility model provides a cyclically-operated carbon dioxide trapping device. A shell of the cyclically-operated carbon dioxide trapping device is connected with an air inlet pipeline, an air outlet pipeline and an exhaust pipeline; the shell is internally provided with a reaction box body, the reaction box body is provided with two reaction cabins, and each reaction cabin is internally provided with a fan, a heater and a carbon dioxide adsorption structure; the air inlet pipeline is connected to the air inlets of the two reaction cabins and is close to the draught fan, the draught fan is used for sucking indoor air into the corresponding reaction box bodies and enabling the indoor air to flow through the heater and the carbon dioxide adsorption structure, and the carbon dioxide adsorption structure is used for adsorbing carbon dioxide in the flowing air; the heater is used for heating flowing air and desorbing carbon dioxide adsorbed in the carbon dioxide adsorption structure; and the two reaction cabins alternately perform adsorption and desorption of carbon dioxide. The device is convenient to operate and can continuously and efficiently control the concentration of indoor carbon dioxide.

An article for joule heating is described, including a three-dimensional substrate on and / or in which a pyrolyzate of a phenolic resin or polymer forms an electrically conductive carbon network. Such articles may be incorporated in structured materials applications, which may include support, sorbent, and or catalyst components. Also described are methods of fabricating such articles and structured materials, and apparatus comprising same, and methods of use of such articles and structured materials and apparatus for conducting material transformation processes requiring input of heat for their performance, such as CO2 adsorption, methane pyrolysis for hydrogen and carbon production, hydrogen-assisted conversion of CO2 to hydrocarbons, including catalytic conversion of CO2 to olefins, catalytic conversion of CO2 to propane (liquefied petroleum gas), and catalytic conversion of CO2 to renewable natural gas, reverse water gas shift reaction, steam ethane cracking, propane cracking, steam methane reforming, and dry methane reforming.

The invention relates to a fly ash-based MOFs adsorption-catalysis material integrated preparation method, and belongs to the field of solid waste treatment and resource utilization. The material takes industrial solid waste fly ash as a matrix, and is prepared by the following steps: firstly, carrying out alkali modification and silane coupling agent surface activation treatment on fly ash to form a high-activity matrix; then loading a metal organic framework (MOFs) on the surface of the activated fly ash through an in-situ synthesis process to form a porous composite carrier; the integrated material with CO2 adsorption and catalytic conversion functions is further prepared through impregnation of a copper-based active component and a high-temperature calcination process. According to the invention, the problems of high energy consumption, high cost and low comprehensive utilization rate of fly ash of the traditional CO2 capture and utilization technology (ICCU) are solved, high-valued resource utilization of industrial solid waste and efficient capture and conversion of CO2 are synchronously realized, and the method has dual values of environmental protection and economy.

An integrated system for adsorbing carbon dioxide (CO2) in the air is described. The system includes: an adsorber that adsorbs the CO2 from the air using a sorbent; and a desorber, coupled to the adsorber, that desorbs the adsorbed CO2 from the sorbent (e.g., in an energy-efficient manner, such as without using steam) into an output of the system. In contrast with other approaches, the system may continuously move the sorbent, as an ensemble, through the system. Thus, the system may concurrently (and continuously) perform adsorption and desorption. Moreover, the sorbent may include a cost-effective and robust free-standing bulk solid. This may allow the sorbent to be used in multiple cycles or transits through the system. Furthermore, after the multiple cycles, the sorbent may be replaced while the system is operating, and the used sorbent may be recycled for subsequent reuse in the system.

Provided is a carbon dioxide capturing apparatus comprising: a reaction tower including a carbon dioxide adsorption unit or a carbon dioxide absorption unit which adsorbs or absorbs carbon dioxide from exhaust gas; desorption tower connected to the reaction tower and including an adsorbent heating unit for heating an adsorbent circulating inside or an absorbent heating unit for heating an absorbent circulating inside; an adsorbent or absorbent which circulates in the reaction tower and the desorption tower and alternately adsorbs and desorbs carbon dioxide or alternately absorbs and desorbs carbon dioxide; and a heat exchange unit which desorbs carbon dioxide from the adsorbent on which carbon dioxide is adsorbed or the absorbent in which carbon dioxide is absorbed, through heat exchange between the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or between the absorbent in which carbon dioxide is absorbed and the heated absorbent, wherein the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or the absorbent in which carbon dioxide is absorbed and the heated absorbent are transferred in a co-current flow manner.

The invention discloses surface hydroxylation modified mesoporous SiO2, a preparation method of the surface hydroxylation modified mesoporous SiO2 and a SiO2-based solid amine adsorbent. The preparation method comprises the following steps: dispersing waste glass powder into a first alkali solution, and reacting under a heating condition to obtain a sodium silicate solution; the concentration of the first alkali solution is 20-30 g / L; introducing carbon dioxide into the sodium silicate solution to obtain mesoporous SiO2; dispersing the mesoporous SiO2 into a second alkali solution, and carrying out heating treatment, so as to obtain surface hydroxylation modified mesoporous SiO2; and the concentration of the second alkali solution is 0.2-3 g / L. The glass powder is subjected to silicon extraction in an alkali dissolution mode to obtain the Na2SiO3 solution, the silicon recovery rate of 92% can be achieved, the prepared surface hydroxylation modified mesoporous SiO2 can be used as a carrier, PEI is loaded through a physical dipping method, the SiO2-based solid amine CO2 adsorbent is prepared, and on the basis of maintaining the high CO2 adsorption capacity, the CO2 adsorption capacity is greatly improved. The long-term stability of the solid amine adsorbent in an O2-containing environment can be maintained, and the service life and the long-term cyclic adsorption performance of the solid amine adsorbent are greatly improved.

The invention provides an industrial electrode for synthesizing urea through electro-catalysis C-N coupling and a preparation method and application of the industrial electrode, and belongs to the field of urea synthesizing.The industrial electrode for synthesizing urea through electro-catalysis C-N coupling comprises a conductive substrate and an electro-catalysis material coating the surface of the conductive substrate; the electrocatalytic material comprises a magnesium oxide modified copper oxide catalyst, and MgO nanoparticles and CuO nanoparticles in the magnesium oxide modified copper oxide catalyst are in contact with each other to form a heterostructure. The magnesium oxide modified copper oxide catalyst is used as an electro-catalysis material, MgO nano-particles and CuO nano-particles in the catalyst material are in contact with each other to form a heterostructure, after MgO is introduced, the CO2 adsorption and activation capacity is improved, CO and NHx coupling is promoted, and the urea Faraday efficiency is improved. The industrial electrode shows excellent selectivity and stability in the process of electro-catalytic synthesis of urea.

The invention belongs to the technical field of CO2 adsorbents, relates to carbon-based solid amine, and discloses a preparation method of a carbon-based solid amine CO2 trapping adsorbent, which comprises the following steps: S1, dissolving organic amine in a methanol solution to form a methanol amine solution; s2, adding the mesoporous carbon-based carrier into the methanol amine solution, and stirring at a low speed to evaporate methanol; and S3, drying in a vacuum oven to obtain the carbon-based solid amine CO2 trapping adsorbent. The CO2 trapping adsorbent prepared by the invention has the advantages of large CO2 adsorption capacity, strong selectivity, good stability and reproducibility, effectively reduces the CO2 trapping cost, and has huge advantages in the aspect of carbon trapping.

The invention relates to high-pore-volume nitrogen-doped activated carbon for capturing carbon dioxide and a preparation method of the high-pore-volume nitrogen-doped activated carbon, and belongs to the technical field of activated carbon. In order to solve the problem that high nitrogen content and high pore volume of nitrogen-doped activated carbon are not matched, the invention provides a preparation method of high-pore-volume nitrogen-doped activated carbon for carbon dioxide capture. In the preparation process of the activated carbon, an activating medium composed of a carbon source and an activating agent and a nitrogen-containing precursor are respectively laid in different mutually isolated areas in a crucible, so that the carbon deposition effect of the nitrogen-containing precursor is weakened, the high pore volume of the activated carbon is maintained, the nitrogen content of the activated carbon is improved, and the high CO2 adsorption capacity and the high CO2 / N2 adsorption selectivity are obtained at the same time. When the high-pore-volume nitrogen-doped activated carbon prepared by the method is applied to the field of industrial CO2 trapping, high CO2 adsorption capacity can be obtained, and high CO2 purity in desorbed gas can be guaranteed.

The invention relates to a renewable industrial flue gas carbon dioxide adsorbent and a preparation method thereof. The method comprises the following steps: S1, mixing alkali metal, an aluminum oxide precursor, silicon oxide and a first solvent, or mixing an alkali metal solution, the aluminum oxide precursor, the silicon oxide and an optional second solvent, and then molding the mixed material to obtain microsphere particles; s2, mixing the microsphere particles and organic amine, and carrying out first loading treatment and drying treatment to obtain an organic amine loaded material; s3, roasting the organic amine-loaded material, mixing the obtained roasted material with a carrier material, and carrying out second loading treatment, so as to obtain the carbon dioxide adsorbent, the carrier material is selected from at least one of polystyrene-polyacrylic acid-polyethylene oxide, polymethyl methacrylate-b-polystyrene, zirconium oxide and a porous ceramic material. The carbon dioxide adsorbent is relatively high in adsorption capacity and relatively good in selectivity, reproducibility and stability; and large-scale industrial production and application are facilitated.

According to one embodiment, provided is a carbon dioxide absorption-release device including a pair of electrodes, an aqueous electrolyte, a first electrolyte flow path, and a second electrolyte flow path. Each of the pair of electrodes include a porous composite, where the porous composite contains an electro-conductive component and a porous material on the electro-conductive component, and the porous material includes a reactive moiety for electrochemical proton transfer. In the first electrolyte flow path, one of the pair of electrodes contacts the aqueous electrolyte. In the second electrolyte flow path, the other of the pair of electrodes contacts the aqueous electrolyte.

The application belongs to the technical field of preparation of carbon aerogel materials, and particularly relates to a nitrogen-doped carbon aerogel and a preparation method and application thereof. A carbon aerogel with a three-dimensionally interconnected microporous structure is prepared by using two precursors with low cost and rich in nitrogen content, namely acrylamide and aniline. Firstly, a three-dimensionally interconnected polyacrylamide medium with high absorbability is prepared; then, by virtue of the high absorbability, the reaction solution of aniline is fully absorbed in a low-temperature state, and the aniline is uniformly dispersed and orderly polymerized under a freezing condition, so that the problem of agglomeration of traditional polyaniline preparation and difficulty in dispersion are solved; finally, an activating agent is used to activate and pore-form the aerogel. The carbon aerogel has high nitrogen content, rich in a large number of basic active sites and a three-dimensionally interconnected microporous structure, and thus the CO2 adsorption capacity is significantly improved.

The invention discloses a system and a method for preparing low-carbon olefin through carbon dioxide adsorption and in-situ oxidative dehydrogenation. The invention provides a system and a method for integrating carbon dioxide capture and in-situ oxidation low-carbon alkane (ethane / propane) dehydrogenation, a bifunctional material is composed of an adsorbent and a catalyst, and capture of carbon dioxide and in-situ oxidation low-carbon alkane dehydrogenation can be realized in the same reaction tower, so that the highest one-way carbon dioxide conversion rate can reach 100%, and the conversion rate of carbon dioxide can reach 100%. And meanwhile, the ethylene yield reaches 26%. According to the method, the problems of additional product separation and product gas recycling caused by low carbon dioxide conversion efficiency in the prior art are avoided, and effective heat management is realized, so that the process of integrating carbon dioxide capture and preparing low-carbon olefin by oxidizing low-carbon alkane has more economic advantages.

The invention relates to a solid amine-containing inorganic fiber corrugated paper forming method, which comprises: uniformly mixing solid amine and an auxiliary agent to form a jelly, respectively coating the front surface and the back surface of inorganic fiber paper by using a rolling manner, carrying out drying curing treatment, and carrying out corrugated roller pressing shaping to obtain the solid amine-containing inorganic fiber corrugated paper. The inorganic fiber corrugated paper containing the solid amine is prepared. According to the forming method of the inorganic fiber corrugated paper containing the solid amine, provided by the invention, the loading capacity and the adhesive force of the solid amine on the inorganic fiber paper can be effectively improved. The inorganic fiber paper containing solid amine provided by the invention can be used for preparing a carbon dioxide adsorption rotating wheel or a rotating drum for smoke carbon capture and direct air carbon capture, so that the energy consumption and the cost of carbon capture are reduced.

A carbon sorbent for removing carbon dioxide from a gaseous material includes a surface composition including carbon, nitrogen, and oxygen. The nitrogen atoms at the surface of the carbon sorbent may be present in pyridone, pyrrole, and pyridine. The surface of the carbon sorbent may include lactone groups and pyrone groups. The carbon sorbent may have a bulk density greater than about 0.40 grams per cubic centimeter. The carbon sorbent may be formed using amino acids to provide the nitrogen for the carbon sorbent. In addition, the use of processing aids during the formation of the carbon sorbent facilitates the formation of a denser carbon sorbent. Related methods of forming the carbon sorbent and pellets of the carbon sorbent are also disclosed.

This invention relates to the preparation and application of oxygen-carrying catalytic bifunctional particles in chemical looping combustion technology, specifically the use of perovskite oxygen carriers for the hydrogenation of CO2 to produce ethylene, propylene, and butene. The catalyst has suitable CO2 adsorption and dissociation capabilities, inhibiting olefin re-adsorption, reducing secondary olefin reactions, and improving olefin selectivity. The catalyst effectively inhibits the secondary hydrogenation of primary olefins, regulating the production of high-value-added C2-C4 lower carbon olefins.

The invention provides a carbon dioxide trapping device, which relates to the field of carbon dioxide adsorption, and comprises a main gas pipe, a distributor, an absorption tower group consisting of a plurality of sub-towers with the same structure, a flow control valve group, a sensor group, a regeneration tower, a rich and lean liquid heat exchanger and a controller, the controller dynamically adjusts the opening degree of the air inlet adjusting valve and the opening degree of the proportion adjusting valve of each sub-tower based on the distributor pressure, the air inlet flow of each sub-tower, the pressure intensity in the tower and the outlet carbon dioxide concentration collected by the sensor, and dynamically adjusts the number and flow distribution of the operating sub-towers according to an upstream load change signal in combination with the constraint of a high-efficiency area of a gas phase flow window of the sub-tower. The controller is further integrated with a prediction model based on a long-short-term memory neural network, a rolling time domain optimization algorithm is adopted, regeneration energy consumption is minimized under the condition that safe production is guaranteed, and efficient, stable and energy-saving operation of the decarburization process is achieved through cooperative control of the efficient set, the buffer set and the standby set.

The invention relates to the technical field of preparation of carbon dioxide adsorbents, and discloses a carbon dioxide solid adsorbent and a preparation method and application thereof, the carbon dioxide solid adsorbent comprises 10-15 parts of aminated montmorillonite, 5-8 parts of modified chitosan, 20-25 parts of desulfurized gypsum, 3-5 parts of a composite water-retaining agent, 1-2 parts of a functional buffer agent and 0.5-1 part of an ammonia adsorption accelerant. According to the invention, the aminated montmorillonite is adopted to replace traditional streptomycin, so that the raw material cost is reduced, and the risk of antibiotic residue is thoroughly eliminated; chitosan is modified through graphene quantum dots, the excellent oxidation resistance of the graphene quantum dots is utilized, an antioxidant does not need to be additionally added, the environment burden is reduced while the preparation process is simplified, and the degradation rate of the adsorbent in the natural environment is increased. All the components in the adsorbent have a synergistic effect, the aminated montmorillonite provides abundant adsorption active sites, the modified chitosan enhances the mechanical strength and stability of the adsorbent, the composite water-retaining agent and the buffer agent guarantee the stability of an adsorption environment, and the ammonia adsorption accelerant accelerates CO2 adsorption kinetics.

A carbon sorbent for removing carbon dioxide from a gaseous material includes a surface composition including carbon, nitrogen, and oxygen. The nitrogen atoms at the surface of the carbon sorbent may be present in pyridone, pyrrole, and pyridine. The surface of the carbon sorbent may include lactone groups and pyrone groups. The carbon sorbent may have a bulk density greater than about 0.40 grams per cubic centimeter and may exhibit a carbon dioxide capacity of at least 11.0 weight percent at 30° C. and 760 mmHg. The carbon sorbent may be formed using amino acids to provide the nitrogen for the carbon sorbent. In addition, the use of processing aids during the formation of the carbon sorbent facilitates the formation of a denser carbon sorbent. Related methods of forming the carbon sorbent and pellets of the carbon sorbent are also disclosed.

A method for regenerating an amine-containing sorbent useful in the capture of carbon dioxide (CO2), by contacting a CO2 complex of the amine-containing sorbent in solution with a metal oxide material while the solution is at a temperature within a range of 60-130° C. to result in release of CO2 and regeneration of the amine-containing sorbent, wherein the CO2 in the CO2 complex is in the form of a carbamate or bicarbonate moiety attached to the amine-containing sorbent. The method may also include re-using the regenerated sorbent to capture carbon dioxide. The sorbent may be, for example, an amino acid (e.g., glycine), alkylamine, alkanolamine, or amine biphasic solvent. The metal oxide material may more particularly be selected from the group consisting of TiO2, TiO(OH)2, MoO3, V2O5, Cr2O3, WO3, Ag2O, Nb2O5, NiO, CuO, MnO2, ZrO2, Fe2O3, Fe3O4, ZnO, and combinations thereof.

The invention discloses a photo-thermal carbon dioxide adsorbent as well as a preparation method and application thereof. The photo-thermal carbon dioxide adsorbent is green in production process and wide in raw material source, chitosan which is high in natural abundance and low in price is directly used as a raw material, and the energy consumption in the preparation process is effectively reduced through a composite pore-forming strategy that an activating agent, a pore-forming agent and a nitrogen source are introduced through a one-pot method. The photo-thermal carbon dioxide adsorbent provided by the invention can realize direct carbon capture in normal-temperature air or adsorption separation of CO2 in flue gas, and then realizes zero-carbon desorption under sunlight irradiation, thereby providing a new idea for capture, utilization and storage of carbon dioxide.

The invention provides a method for determining the pore diameter lower limit and the effective pore volume ratio of movable fluid. The method comprises the steps that the temperature of each sample under the stratum in-situ condition is calculated according to the ground temperature gradient and the burial depth; correcting the surface tension coefficient of the water by using the calculated temperature; determining an average contact angle of water and shale; calculating capillary force, enabling the capillary force to be equal to reservoir fluid pressure, and calculating the lower limit of the aperture of the movable water; carrying out carbon dioxide adsorption, liquid nitrogen adsorption and mercury injection experiments on the sample to obtain connectivity pore volume-pore size distribution, and calculating effective pore volume in combination with a movable water pore size lower limit; carrying out a low-field nuclear magnetic resonance experiment, calculating the total pore volume of macropores, obtaining the total pore volume of small pores in combination with a carbon dioxide experiment, and finally calculating the total pore volume; and calculating the pore volume ratio of the effective pores by using the pore volume of the effective pores and the total pore volume. According to the method, the evaluation precision of the lower limit of the pore diameter of the shale reservoir movable fluid and the pore volume ratio of the effective pores is effectively improved, and the test cost is reduced.

The invention discloses an electric methane preparation catalyst compounded by Ni nanoclusters and ZrO2 with lattice embedded with Ru single atoms as well as a preparation method and application of the electric methane preparation catalyst. The electric methane preparation catalyst comprises a NiNCRuSA / ZrO2 bimetallic active site catalyst compounded by the Ni nanoclusters and the ZrO2 with the lattice embedded with the Ru single atoms. The electric methane preparation catalyst comprises a NiNCRuSA / ZrO2 bimetallic active site catalyst, the NiNCRuSA / ZrO2 bimetallic active site catalyst is of a ZrO2 composite structure formed by embedding Ru monatomic into Ni nanoclusters and crystal lattices, the Ni nanoclusters and the Ru monatomic are adjacently distributed on a ZrO carrier to form a synergistic catalysis structure, rich and efficient active sites are provided for catalytic reaction, and reactant adsorption and conversion are facilitated; in the subsequent CO2 methanation reaction, the Ni element quickly dissociates H2 and provides sufficient H *, Ru replaces ZrO2 to serve as an active site for CO2 adsorption and conversion, conversion of an intermediate of CO2 can be accelerated, the reaction activity is greatly enhanced through cooperation of the Ni element and the Ru, the reaction energy barrier is reduced, and the overall catalytic efficiency is improved.

A carbon sorbent for removing carbon dioxide from a gaseous material includes a surface composition including carbon, nitrogen, and oxygen. The nitrogen atoms at the surface of the carbon sorbent may be present in pyridone, pyrrole, and pyridine. The surface of the carbon sorbent may include lactone groups and pyrone groups. The carbon sorbent may have a bulk density greater than about 0.40 grams per cubic centimeter. The carbon sorbent may be formed using amino acids to provide the nitrogen for the carbon sorbent. In addition, the use of processing aids during the formation of the carbon sorbent facilitates the formation of a denser carbon sorbent. Related methods of forming the carbon sorbent and pellets of the carbon sorbent are also disclosed.

The invention discloses a hydrophobic modified manganese-doped copper-based catalyst for preparing methanol through CO2 thermal reduction hydrogenation as well as a preparation method and application of the hydrophobic modified manganese-doped copper-based catalyst, and belongs to the technical field of catalysts. The preparation method of the catalyst comprises the following steps: mixing a metal salt mixed solution of a copper salt, a zinc salt, an aluminum salt and a manganese salt with an alkaline solution of a sodium salt, and controlling the pH value; heating, aging, standing and layering; washing the precipitate, drying and roasting to obtain a manganese-doped copper-based catalyst to be hydrophobically modified; the preparation method comprises the following steps: carrying out a hydrothermal reaction on divinyl benzene and a DMF solution of epoxy resin, washing and drying a white solid obtained by the reaction to obtain a hydrophobic material nano-porous polydivinyl benzene; the preparation method comprises the following steps: mixing a hydrophobic material and a manganese-doped copper-based catalyst to be hydrophobically modified, grinding, tabletting and forming to obtain the hydrophobically modified manganese-doped copper-based catalyst. The CO2 adsorption capacity of the catalyst is improved, the monatomic dispersion degree of the catalyst is promoted, and large-scale low-steric-hindrance hydrophobic modification of an active phase is realized.

The invention belongs to the field of carbon dioxide geological sequestration and oil-gas field development, and relates to a shale carbon dioxide adsorption expansion damage experiment method considering a hydration state, which comprises the following steps: processing a shale sample according to requirements; the shale is subjected to constant-humidity regulation and control pretreatment, and in the process, different relative humidity environments can be used for pretreatment, so that the influence of different clay mineral hydration interlayer spacing states on adsorption expansion is obtained; soaking the pretreated shale in supercritical carbon dioxide, adsorbing the sample when the temperature and pressure conditions reach a set value, soaking until the rock sample reaches adsorption saturation, and treating by using carbon dioxide with different pressures and temperature gradients; according to collection of sample microstructure and mechanical data, damage can be treated through crack initiation position comparison, porosity and gray scale quantitative analysis and macro-mechanical parameter evolution. The method provides an experimental method for carbon dioxide geological sequestration safety assessment and shale gas fracturing parameter optimization.

The invention discloses a copper oxide modified bismuth vanadate photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic reduction of carbon dioxide. The method comprises the following steps: synthesizing a BiVO4 monomer through a hydrothermal method, then mixing and stirring the BiVO4 monomer and a Cu-MOF precursor solution, carrying out electrostatic adsorption compounding, then carrying out calcination treatment to convert Cu-MOF into CuO, loading the CuO on the surface of BiVO4, forming a p-n heterojunction, and preparing the CuO / BiVO4 composite photocatalyst. According to the catalyst, separation of photon-generated carriers is effectively promoted by constructing a heterojunction, the CO2 adsorption and activation capacity is enhanced, and the CO2 photocatalytic reduction performance is remarkably improved; experiments show that the CO yield of the prepared catalyst reaches 36.77 [mu] mol.g <-1 >. H <-1 > in a reaction for 5 hours, which is about 5.7 times that of pure BiVO4, and the catalyst has good stability; the method is simple in process, low in cost and suitable for efficient photocatalytic reduction of CO2 to prepare fuel.

The present invention discloses a method for preparing molten salt-modified magnesium oxide adsorbent particles for carbon dioxide capture. The method involves reacting magnesium chloride as a magnesium source with sodium bicarbonate to produce light basic magnesium carbonate, which is then calcined in stages to produce a microporous magnesium oxide precursor. The microporous magnesium oxide precursor is then impregnated with a mixed salt consisting of nitrate and carbonate, and dried to produce an alkali metal molten salt-modified magnesium oxide powder. A binder is added to the powder, and the powder is extruded to form a granular adsorbent. Applications of the adsorbent are also disclosed. The prepared adsorbent particles have good structural stability and are recyclable. When adsorbing and capturing CO2 at approximately 300°C, the loaded mixed salt forms a molten salt layer on the microporous surface of the magnesium oxide, enhancing CO2 adsorption. The CO2 adsorption capacity reaches over 10 mmol / g (adsorbent), which is more than 10 times higher than that of unmodified magnesium oxide adsorbent. The CO2 desorption rate is also significantly improved, reaching 100% at 400°C.

The invention discloses a detection method for an ODS detection system, which comprises the following steps: S1, sample introduction trapping: a first cold trap is at a first temperature, and the first cold trap traps all ODS in a sample gas; s2, first desorption: the second cold trap is at a second temperature, the first cold trap is heated to a third temperature, ODS with the boiling point smaller than or equal to the boiling point of CO2 in the first cold trap is desorbed out, CO2 adsorption is conducted through a CO2 adsorption pipe, and the ODS desorbed out of the first cold trap after adsorption through the CO2 adsorption pipe is focused through the second cold trap; s3, secondary analysis: heating the first cold trap to a fourth temperature, analyzing the remaining ODS in the first cold trap, and focusing the remaining ODS in the first cold trap by the second cold trap; and S4, injection: heating the second cold trap to a fifth temperature, analyzing all ODS in the second cold trap, and injecting the ODS into the GCMS detection device. The method has the advantages of high test precision and high test accuracy.

The invention discloses a method for synthesizing sustainable aviation kerosene through CO2 hydrogenation in biogas. The method comprises the following steps: taking Fe / Mn-CaO as a CO2 adsorption separating agent, taking NiMoGa ternary liquid metal as a catalyst for methane decarbonization hydrogen production, and taking a metal oxide-molecular sieve as a catalyst for synthesizing aryl aviation kerosene through CO2 hydrogenation. According to the metal oxide-molecular sieve catalyst for synthesizing the aromatic sustainable aviation kerosene through CO2 hydrogenation, a metal oxide (ABO3) with a perovskite structure is synthesized through a sol-gel method, and the metal oxide (ABO3) is physically mixed with a molecular sieve; a in ABO3 is lanthanum, and a B element comprises iron, chromium, cobalt or nickel; the molecular sieve contains ZSM-5 (Zeolite Socony Mobil-5), ZSM-11 (Zeolite Socony According to the oxide catalyst disclosed by the invention, a polydentate chelate is formed by metal nitrate and citric acid, and a special perovskite structure can be formed through simple drying and roasting, so that the oxide catalyst has excellent carburization resistance, and a formed oxygen-containing intermediate is diffused into a zeolite molecular sieve to form aromatic aviation kerosene; the preparation of aryl aviation kerosene from bio-based CO2 hydrogenation is realized.