445results about How to "Rich pore structure" patented technology

The invention discloses a phosphorus removal filler and a preparation method and application thereof, and belongs to the technical field of fillers. Sulphoaluminate cement, chitosan, sodium alginate and calcium peroxide are uniformly mixed in a nitric acid solution in an amino-containing coupling agent, then foaming and pore forming are performed under steam, and the phosphorus removal filler is prepared. And finally, uniformly mixing with titanium dioxide, sodium silicate, a ferrous sulfate solution and sodium borohydride to obtain the phosphorus removal filler with an excellent phosphorus removal effect, and the phosphorus removal filler has a rich pore structure and adsorption activity, can sufficiently perform physical adsorption on phosphorus elements, and has a good phosphorus removal effect. Meanwhile, the phosphorus removal filler further has excellent surface complexing activity and photocatalysis, insoluble salt precipitates can be generated through reaction of iron elements and calcium elements and phosphate in water, so that total phosphorus is removed, the material is ground after adsorption saturation and put into a fish pond to serve as a phosphorus supplementing material, resource recycling can be achieved, and the cost is reduced. Wide application prospects are realized.

The invention discloses a zinc negative electrode protective layer material of an aqueous zinc ion battery as well as a preparation method and application of the zinc negative electrode protective layer material. The method comprises the following steps: dispersing a carbon material in an acidic liquid, stirring at room temperature, and fully mixing to obtain a uniform suspension; adding manganese salt into the mixed solution, stirring at room temperature, and then performing constant-temperature water bath; washing, centrifuging, drying and calcining a product obtained by the reaction to obtain expanded graphite; uniformly dispersing expanded graphite in a solvent, and stirring to obtain a dispersion liquid; adding a titanium-containing organic compound into the dispersion liquid and stirring; adding deionized water into the dispersion liquid and refluxing; and centrifuging, washing, drying and calcining to obtain the protective layer. According to the composite material, expanded graphite is prepared firstly, and then titanium dioxide quantum dots are anchored on the expanded graphite. Due to excellent zinc ion rate, compared with the prior art, the material has lower interface resistance and good cycling stability and rate capability, and the problems of interface dendritic crystal growth and the like are solved.

The invention discloses a preparation method of a perovskite type high-temperature-resistant CO2 methanation catalyst, which comprises the following steps: firstly, preparing CaZrO3, then dissolving CaZrO3 powder, a nickel source, a soluble organic fuel and a certain amount of ethylene glycol in deionized water according to a molar ratio of 1: (0.2-0.8): (0.1-0.5), stirring to obtain a dispersion liquid, then putting carrier monoclinic ZrO2 powder in the dispersion liquid, and stirring to obtain the perovskite type high-temperature-resistant CO2 methanation catalyst. The preparation method comprises the following steps: uniformly mixing the raw materials, carrying out ultrasonic treatment for 5-12 hours, heating the obtained mixture at 300-550 DEG C until spontaneous combustion, carrying out high-temperature calcination at 800-900 DEG C for 1-2 hours after flame is extinguished, collecting the calcined product, and carrying out ball milling and granulation to obtain the NiO-CaZrO3 / ZrO2 catalyst with a certain mesh number. According to the preparation method of the catalyst, a solution combustion method is introduced in the preparation process, so that active components of the prepared catalyst are fully dispersed, and further high-temperature calcination is performed on the basis, so that the active components are stably anchored on the surface of the ZrO2 carrier, and the catalytic activity and the stability of the catalyst are improved.

The invention belongs to the field of material preparation and chemical engineering, and particularly relates to an N-doped modified MOFs (Metal-Organic Frameworks) derived core-shell nanoreactor as well as a preparation method and application thereof. The preparation method comprises the following steps: taking cobalt as a node metal, synthesizing an N-doped modified MOFs material with an organic ligand and a nitrogen source through a hydrothermal reaction, then coating the surface of the material with porous silicon dioxide, and preparing the N-doped modified MOFs derived core-shell nanoreactor through a two-step calcination method. The MOFs derived core-shell nanoreactor prepared by the invention has a large specific surface area, a rich pore structure and excellent catalytic activity and stability, and is high in catalytic activity, good in recycling stability and suitable for large-scale popularization and application when being used as a catalyst for alpha, beta-unsaturated aldehyde transfer hydrogenation.

The invention discloses an ammonia decomposition hydrogen production catalyst and a preparation method and application thereof, and relates to the field of catalysis, the catalyst comprises a carrier and an active component, and the carrier is doped porous nanorod-like cerium dioxide; the active component is alloy nanoparticles formed by ruthenium and other metals, and the ruthenium loading amount accounts for 0.8-2% of the total mass of the catalyst. The preparation process of the catalyst comprises the following steps: respectively preparing the carrier and the active component, anchoring the active component on the carrier in a highly dispersed manner in an in-situ loading manner, and enabling the active component of the catalyst and the carrier to form a strong synergistic catalysis effect by using a segmented heating gradient reduction process so as to show the characteristics of low-temperature high activity and high stability. Under the reaction conditions that the normal pressure is 0.1 MPa, the temperature is 450 DEG C and the air speed is 24000mL. G <-1 >. H <-1 >, the ammonia decomposition conversion rate reaches 99.5%, and the catalyst can stably run for 1000h without obvious inactivation.

The invention discloses polyelectrolyte carbon-based hydrogel as well as a preparation method and application thereof. The polyelectrolyte carbon-based hydrogel has an ordered orientation three-dimensional porous network structure formed by crosslinking of water-soluble gel, polyelectrolyte and nanocarbon. The preparation method comprises the following steps: uniformly mixing water-soluble gel, water and a nano carbon material to obtain a first mixed solution; uniformly mixing polyelectrolyte with the first mixed solution to obtain a second mixed solution, and adjusting the pH value; mixing the second mixed solution and a cross-linking agent, and performing directional freezing casting to obtain frozen nano composite gel; and performing freeze drying on the frozen nano carbon composite gel to obtain polyelectrolyte carbon-based aerogel, and soaking the polyelectrolyte carbon-based aerogel in water to obtain the polyelectrolyte carbon-based hydrogel. The porous structure of the hydrogel is effectively regulated and controlled in the directional freezing casting process through the polyelectrolyte, and the polyelectrolyte carbon-based hydrogel has a small-pore hierarchical pore structure, has high photo-thermal conversion and light absorption capacity and can be applied to the field of photo-thermal water evaporation purification.

The invention provides a lithium-supplementing composite additive, a lithium-supplementing positive pole piece for inhibiting flatulence and application, and belongs to the field of lithium ion batteries. The lithium supplementing composite additive is a mixture of a lithium supplementing agent and aminated aluminum oxide, the mass ratio of the lithium supplement agent to the aminated aluminum oxide is (6-10): (3-5); the aminated aluminum oxide is activated aluminum oxide modified by an amino organic matter; the mass ratio of the amino organic matter to the activated aluminum oxide is 3: (7-12); the lithium supplement agent is hydroxyl cycloenone dilithium salt or lithium carboxylate. The lithium-supplementing positive pole piece capable of inhibiting flatulence comprises a current collector, an active coating and a functional coating located on the surface of the active coating, and the functional coating contains a lithium-supplementing composite additive and has the functions of supplementing lithium, absorbing acid and inhibiting flatulence. The method is characterized in that the aminated alumina matrix can absorb hydrofluoric acid in an electrolyte, and the aminated group can absorb carbon dioxide generated by decomposition of a lithium supplement agent. The method can reduce the problem of battery cycle gas expansion in the use process of the lithium supplement agent, and improves the battery cycle and safety performance.

The invention discloses a preparation method of a low-temperature SCR (Selective Catalytic Reduction) catalyst with coke loaded with transition metal oxide. The preparation method comprises the following steps: preparing superfine coal powder; removing mineral substances from the superfine coal powder to obtain ash-removed coal powder; chemically activating the deashed coal powder into an activated coal base; coking the activated coal base to form a coal coke carrier; and preparing a single Fe oxide catalyst and an Fe-Mn composite oxide catalyst which take the coal coke as a carrier. The catalyst is prepared from the coal, so that the utilization value of the coal can be improved, the conversion of the coal from fuel to raw materials can be accelerated, and the pollution of the coal to the environment is reduced. Meanwhile, compared with a noble metal catalyst and coke, the catalyst with the coke carrier prepared by the method disclosed by the invention is lower in price and wide in source, so that the preparation cost of the catalyst can be reduced, and compared with other matrix materials, the coke carrier prepared by the method disclosed by the invention takes superfine pulverized coal coke as a matrix, so that the cost of the catalyst is reduced. The preparation cost is lower, and the pore structure is richer.

The invention discloses a medium and low temperature organic sulfur hydrolytic agent applied to coal gas dry purification and a preparation method thereof, and relates to the technical field of coal gas purification and industrial catalysis, the hydrolytic agent comprises the following components: gamma-Al203, pseudo-boehmite, a pore forming agent, an active agent, an auxiliary agent, an adhesive and water. According to the medium-low temperature organic sulfur hydrolytic agent applied to dry purification of coal gas and the preparation method thereof, an alkali metal element is adopted as an active agent, and the characteristic that the alkali metal element can provide a large number of alkaline reaction sites is utilized, so that organic sulfur molecules are promoted to be preferentially adsorbed with the hydrolytic agent to generate hydrolysis reaction; meanwhile, sodium metavanadate is added as an active auxiliary agent, so that the low-temperature activity of the hydrolysis catalyst is further optimized.

The invention relates to a double-effect carbon clamping cloth with a regeneration function for an air purifier and a preparation method of the double-effect carbon clamping cloth, and the preparation method comprises the following steps: S1, uniformly mixing TiO2, K2CO3 and La (NO3) 3, roasting, immersing into a metal acid solution for dipping, taking out, drying and activating to obtain a heat release material; s2, ball-milling the heat release material obtained in the step S1 until the heat release material is uniform, and then adding a dispersing agent to obtain heat release material spraying liquid; s3, spraying the heat release material spraying liquid obtained in the step S2 on one side of a polyester non-woven fabric for multiple times to obtain a heat release skeleton layer; s4, a first hot melt adhesive net film, a first activated carbon layer and a second hot melt adhesive net film are sequentially laid on the non-spraying face of the heat-releasing framework layer obtained in the S3, after hot-pressing fixing is conducted, a second activated carbon layer, a third hot melt adhesive net film and melt-blown cloth are sequentially laid, hot-pressing forming is conducted, and the double-effect carbon clamping cloth with the regeneration function for the air purifier is obtained. Compared with the prior art, the filter material with the regeneration function is provided, the service life of a filter is prolonged, and the user cost is reduced.

The invention discloses a material and method for reducing the content of heavy metals and nitrogen and phosphorus in bottom mud, the material is suitable for reducing the content of heavy metals and nitrogen and phosphorus in bottom mud, and the material comprises the following components in parts by mass: 100 parts of calcareous shale, 20-40 parts of steel slag, 6-10 parts of activated carbon powder and 6-10 parts of medium-coarse sand; the sintering material is formed by sintering a mixed material, and the mixed material comprises the following components in parts by mass: 100 parts of calcareous shale, 20-40 parts of steel slag, 6-10 parts of activated carbon powder and 6-10 parts of medium-coarse sand; and 2-4 parts of an adhesive. The material for reducing the contents of heavy metals and nitrogen and phosphorus in the bottom mud not only blocks the pollution of sludge to water quality, but also effectively reduces the contents of heavy metals and nitrogen and phosphorus nutrients in the bottom mud in situ, and can reduce the thickness of the bottom mud, improve the characteristics of the bottom mud and really realize harmless treatment of the bottom mud.

The invention relates to the technical field of lithium ion batteries, and particularly provides a preparation method of a graphite negative electrode material and the graphite negative electrode material. The problems that an existing method for improving the rate capability of a graphite negative electrode is complex in process and limited in improving effect, and high-temperature storage performance is deteriorated are solved. Therefore, the preparation method of the graphite negative electrode material comprises the following steps: S1, mixing aromatic hydrocarbon oil, thiophene and medium-high sulfur asphalt, and performing heat treatment to obtain vulcanized asphalt; s2, carrying out delayed coking on the vulcanized asphalt to obtain high-sulfur green coke; and S3, crushing the high-sulfur green coke, and then carrying out graphitization treatment to obtain the graphite negative electrode material. The graphite negative electrode material prepared by the preparation method provided by the invention has good rate capability and high-temperature storage performance.

The invention discloses layered porous biochar prepared from heavy bio-oil as well as a preparation method and application of the layered porous biochar. Heavy bio-oil is used as a carbon source, calcium salt is used as a template agent, K2CO3 is used as an activating agent, and the hierarchical porous biochar with high SSA and a micro-graphitized structure is successfully prepared through a hard template method. The obtained biochar has an excellent layered porous structure, and the obtained electrode has excellent capacitive performance and has great potential as an effective electrode material for preparing a supercapacitor. In addition, the obtained symmetric supercapacitor can keep 98% of high coulombic efficiency after being circulated for 60000 times. An effective way is provided for green utilization of the heavy bio-oil, and structural engineering of the high-performance supercapacitor carbon-based electrode material is achieved through a simple preparation technology.

The invention relates to the technical field of sustained and controlled release fertilizers, in particular to a soil-improving disease-resistant sustained and controlled release fertilizer and a preparation method thereof. The preparation method comprises the following steps: (1) preparation of the nutrient core: weighing an organic fertilizer, an ammonium nitrogen fertilizer, a phosphate fertilizer, a potash fertilizer, a biological regulator, chelated medium trace elements and modified attapulgite, uniformly mixing, and granulating to obtain the nutrient core; (2) covering an organic polymer coating layer: dissolving polylactic acid in a solvent to form a composite solution, spraying the composite solution on the surface of the nutrient core, and drying to obtain an organic polymer coated nutrient core; and (3) covering a mineral coating layer. The outermost layer of the soil-improving disease-resistant controlled-release fertilizer provided by the invention is the mineral coating layer, the mineral coating layer can be gradually disintegrated after being applied to soil, mineral components can improve the physical structure of the soil, regulate the acid-base property of the soil and increase the content of organic matters in the soil after entering the soil, and inorganic and organic nutrients are slowly released into the soil through the organic polymer coating layer; nutrient substances are continuously supplied, and common diseases of the corn are prevented and controlled.

The invention discloses a porous high-entropy perovskite composite material and a preparation method and application thereof, and belongs to the technical field of electrode materials, on the basis of an oxide LaFeO3, Mn < 2 + >, Co < 2 + >, Ni < 2 + > and Cu < 2 + > are adopted to dope and replace part of Fe < 3 + >, so that the porous high-entropy perovskite composite material with the chemical formula of La (Mn0. 2Fe0. 2Co0. 2Ni0. 2Cu0. 2) O3 is obtained, and the porous high-entropy perovskite composite material with the chemical formula of La (Mn0. 2Fe0. 2Co0. 2Ni0. 2Cu0. 2) O3 is prepared. The specific surface area and the porous structure of the high-entropy perovskite composite material are increased, more electrochemical active sites are exposed, and richer electrolyte ion transmission channels are provided, so that various properties of the electrode material prepared by taking the porous high-entropy perovskite composite material as the raw material are improved.

The invention relates to the technical field of preparation of phase-change materials, in particular to a steel slag-based porous ceramic composite phase-change material and a preparation method thereof.According to the preparation process, a sacrificial template method and a foaming agent pore-forming method are combined, waste polyurethane foam and waste wood pulp sponge are used as templates, industrial solid wastes (steel slag, fly ash and rice hull ash) are used as raw materials, and the steel slag-based porous ceramic composite phase-change material is prepared. The steel slag-based porous ceramic is prepared. The steel slag-based porous ceramic composite phase change material is prepared by using the prepared steel slag-based porous ceramic as a carrier vacuum adsorption phase change material. According to the invention, resource utilization of wastes is promoted, and environmental pollution caused by industrial solid wastes, biomass wastes and plastic wastes is reduced. The steel slag-based porous ceramic with abundant pore structures and the steel slag-based porous ceramic composite phase change material with good thermal performance and thermal cycle performance are prepared by adjusting the proportion of the raw materials, the porosity of the porous template and the impregnation vacuum degree. The preparation method is simple and suitable for large-scale production.

The invention discloses a process for preparing a liquid fertilizer from a lysine fermentation waste liquid, and relates to the technical field of fertilizer preparation, and the process has the advantages that a specific metal organic framework (MOFs) derived porous carbon material is adopted as an adsorption material to realize efficient purification of lysine in the lysine fermentation waste liquid, the porous carbon material obtained after ZIF-8 is subjected to carbonization and other treatment has a high specific surface area and a rich pore structure, a large number of sites are provided for adsorption of lysine, amino is introduced through ammonia gas plasma treatment and can form hydrogen bonds or electrostatic interaction with carboxyl of lysine and the like, carboxyl is introduced through oxygen plasma treatment, and the adsorption efficiency of lysine is improved. By means of the precise design, lysine is effectively separated from other impurities, a high-purity lysine resource is obtained, the content and quality of effective components in subsequent liquid fertilizer can be improved, and meanwhile the comprehensive utilization efficiency and economic benefits of the resource are greatly improved.

The invention relates to the technical field of chemical fibers, and discloses a low-thermal-conductivity anti-ultraviolet fiber, a preparation method and application of the low-thermal-conductivity anti-ultraviolet fiber to a light-shading and heat-shielding fabric. The preparation method of the low-thermal-conductivity anti-ultraviolet fiber comprises the following steps: carrying out surface modification and functionalization treatment on a porous zinc oxide nanosheet to obtain a functionalized zinc oxide nanosheet; performing in-situ growth of cobalt borate on the surface of the functionalized zinc oxide nanosheet to obtain a composite nanomaterial; polyacrylonitrile, N, N-dimethylformamide and the composite nanomaterial are mixed, and a skin layer spinning solution is obtained; mixing the modified cellulose-based aerogel powder and N, N-dimethylformamide to obtain a core layer spinning solution; spinning the skin layer spinning solution and the core layer spinning solution to obtain polyacrylonitrile / aerogel composite fibers; the polyacrylonitrile / aerogel composite fiber is modified by diethylenetriamine, and an intermediate product is grafted to obtain the low-thermal-conductivity anti-ultraviolet fiber. The low-thermal-conductivity anti-ultraviolet fiber disclosed by the invention is low in thermal conductivity, good in anti-ultraviolet and flame-retardant effects and excellent in mechanical property.

The invention discloses a preparation method of a composite passivator for soil heavy metal pollution remediation, and the preparation method comprises the following steps: (1) preparing biochar from corn straws, and treating with a hydrochloric acid solution to obtain pretreated biochar powder; (2) performing modification treatment to obtain modified charcoal powder; (3) carrying out amination and carboxylation treatment to obtain functionalized charcoal powder; and (4) carrying out phosphoryl acetic acid treatment to obtain the composite passivator. The soil passivator prepared by the method has a good passivation effect on lead in soil, can convert available lead in the soil into passivated lead which cannot be assimilated by animals and plants, and reduces the harm of heavy metals to the soil. This may be the effect caused by the adsorption passivation of the passivating agent on lead.

The invention discloses a lithium manganese iron phosphate positive electrode material and a preparation method and application thereof, and belongs to the technical field of lithium battery positive electrode materials, the preparation method comprises the following steps: S1, adding a carbon nanotube into concentrated sulfuric acid and concentrated nitric acid for purification, heating and stirring, washing, and drying to obtain an acidified carbon nanotube; adding the acidified carbon nanotubes and soybean protein isolate into a phosphate buffer solution, and performing ultrasonic dispersion, ice-water bath reaction, centrifugation, filtration and drying to obtain a carbon source; s2, uniformly mixing a lithium source, a manganese source, an iron source and a phosphorus source, adding a carbon source, continuously stirring uniformly, ball-milling, drying, and pre-sintering to obtain a pre-sintered product; and S3, adding a carbon source into the pre-sintered product, continuously carrying out ball milling and drying, and carrying out secondary sintering to obtain the lithium iron manganese phosphate positive electrode material. The obtained lithium manganese iron phosphate positive electrode material is good in electrochemical performance, excellent in cycle performance and better in compaction density, and can be widely applied to lithium ion batteries.

The invention discloses a method for preparing a NaP molecular sieve / activated carbon composite material from coal gangue, belongs to the technical field of coal-series solid waste recycling, and aims to solve the technical problem that the alkali resistance and wear resistance of a coal gangue-based molecular sieve need to be further improved in the prior art. The method comprises the following steps: adding a crystallized molecular sieve into a vapor deposition device, carrying out vapor deposition to obtain a carbonized molecular sieve, and carrying out hot isostatic pressing to obtain the carbon-coated molecular sieve. And carrying out vapor deposition, hot isostatic pressing and oxidation liquid treatment, and finally cross-linking through a hydrophilic modifier to obtain the wear-resistant, alkali-resistant and hydrophilic composite molecular sieve.

The invention discloses an extremely low temperature resistant gel electrolyte and a preparation method and application thereof, and belongs to the technical field of gel electrolytes and preparation thereof. The problems that an existing gel electrolyte is prone to freezing at low temperature, and the mechanical property and the ionic conductivity are difficult to consider at the same time are solved. According to the invention, the hydrophilic substance maltitol is introduced into the gel electrolyte, so that the phenomena of dendritic crystal, corrosion, passivation and the like at the interface of the electrolyte and a zinc anode are relieved without introducing an organic solvent, and meanwhile, the introduced maltitol destroys the hydrogen-bond interaction between deionized water, so that the freezing of solvent water is inhibited; according to the present invention, the ultra-low temperature performance of the gel is improved, the ultra-low temperature resistance of the gel electrolyte is ensured, the gel electrolyte has excellent cycle stability under the condition of-60 DEG C 10 mAcm <-2 >, and the obtained gel electrolyte further has excellent mechanical property.

The invention provides a process for regenerating base oil from waste lubricating oil, and belongs to the technical field of base oil processing and production. The preparation process comprises the following steps: preparing biomass activated carbon based on peanut shells; preparing modified biomass activated carbon; pretreatment and extraction of waste lubricating oil; and carrying out molecular distillation and adsorption purification on the oil. Through the process steps of pretreatment, reduced pressure distillation, extraction, molecular distillation, adsorption purification and flash evaporation degassing, the base oil can be produced by using most of logarithms of the waste lubricating oil in society, so that the comprehensive utilization of the waste lubricating oil is realized, and the traditional clay refining process is eliminated in the production process; the problem of secondary pollution caused by waste clay generated in regeneration of the waste lubricating oil is thoroughly solved, and hazardous waste pollution is reduced.

The invention provides a special recombinant material applied to the fields of liquefied petroleum gas (LPG), liquefied ethylene gas (LEG), liquefied natural gas (LNG) A / B / C type independent liquid cargo tanks and part of low-temperature pipeline supports and a manufacturing method of the special recombinant material. The invention provides a manufacturing method of a special recombined material for the ultralow-temperature field. The manufacturing method comprises the steps of selection of a veneer tree species and an adhesive, determination of the thickness of a veneer and the adhesive applying amount, and rapid gum dipping and hot pressing of a thick veneer. According to the manufacturing method provided by the invention, the vacuum high-pressure impregnation adhesive is adopted, so that the effects of high impregnation efficiency, large impregnation amount and uniform resin distribution can be realized; and a temperature sensor and a pressure sensor are installed, so that early warning can be carried out in advance when abnormity occurs. The special recombinant material has excellent mechanical properties such as water resistance, compression resistance, bending resistance and shearing resistance at room temperature and ultralow temperature (-163 DEG C). The special recombinant material provided by the invention can be used for liquid cargo hold pressure-bearing wood of LPG, LEG and LNG ships and part of low-temperature pipeline brackets.

The invention provides a battery diaphragm, a preparation method thereof and a battery. The first coating comprises a composite material, and the composite material comprises nano cellulose and a metal organic framework. According to the battery diaphragm provided by the invention, through the synergistic matching effect of the composite material in the first coating, the probability of thermal runaway is greatly reduced, the infiltration time is shortened, the liquid absorption rate is improved, the migration number of lithium ions is increased, and the migration rate of the lithium ions is improved; therefore, the safety performance, the dynamic performance and the cycle performance of the battery are obviously improved.

The invention discloses a method for preparing methanol through carbon dioxide hydrogenation, belongs to the technical field of carbon dioxide hydrogenation, and is used for solving the technical problems that in the process of preparing methanol through carbon dioxide hydrogenation in the prior art, the conversion rate of a catalyst filler for catalyzing conversion of carbon dioxide and the selectivity of conversion to methanol need to be further improved. The method comprises the following steps: mixing carbon dioxide and hydrogen, compressing to obtain compressed mixed gas, and filling a methanol synthesis tower with a catalyst filler; according to the preparation method disclosed by the invention, modified molybdenum disulfide is optimally prepared, and indium-containing coprecipitation metal and porous carbon powder are matched with each other and are coated and modified, so that the specific surface area and porosity of the catalyst filler are effectively improved; and the conversion rate of carbon dioxide and the selectivity of conversion to methanol of the catalyst filler in the process of preparing methanol through carbon dioxide hydrogenation are also improved.

The invention discloses a halogen modified ultra-microporous carbon material, and a preparation method and application thereof. The preparation method comprises the following steps: S1, grinding and uniformly mixing a mixture of terephthalonitrile or a halogen derivative of terephthalonitrile and anhydrous zinc chloride according to a molar mass ratio of 1: (1-1.2) in a dry inert sealed atmosphere; s2, transferring the ground mixture into a heating container in an inert sealing atmosphere, vacuumizing and sealing, and then carrying out high-temperature heating carbonization treatment; wherein the carbonization temperature is 300-600 DEG C, and the carbonization time is 35-45 hours; s3, after the heating container is cooled to room temperature, taking out a reaction product in the heating container, and grinding again; S4, pouring the ground product into a diluted hydrochloric acid solution, stirring and washing; and washing and filtering the product by using deionized water and ethanol, and then carrying out vacuum activation to obtain the final ultra-microporous carbon material with crystallinity. The material is low in energy consumption, stable in structure, large in gas adsorption capacity, high in separation selectivity and capable of being applied to gathering and separation of greenhouse gas in industrialization.

The invention discloses a multifunctional nano-enzyme as well as a preparation method and application thereof, and belongs to the technical field of nano-enzyme synthesis. Aiming at the problems that a traditional nano-enzyme is single in activity, limited in treatment effect, poor in tumor active targeting specificity and the like, the multifunctional nano-enzyme provided by the invention is simple and efficient in preparation method, and is prepared by taking N and P double-doped hollow carbon nanospheres as a carrier, loading L-arginine and glucose oxidase and taking an aptamer as a targeting molecule. The multifunctional nano-enzyme is small in particle size, high in dispersion degree and good in biological safety. The multifunctional nano-enzyme not only has the activities of peroxidase, nitric oxide synthase and glucose oxidase, but also has excellent photo-thermal conversion capacity in tumor targeted therapy. The multifunctional nano-enzyme provided by the invention has a tumor focus specific recognition capability, can be highly enriched at a tumor part, finally realizes the purpose of photothermal / catalytic treatment combined tumor treatment, and provides a new thought and platform for tumor treatment.

The invention discloses an MOF-derived copper-based catalyst and a preparation method and application thereof.According to the MOF-derived copper-based catalyst, a Cu-MOF metal organic framework material synthesized through hydrothermal reactions in different modes serves as a sacrifice template agent, a series of copper-based catalytic materials with rich micro-mesoporous structures are prepared through high-temperature calcination, copper particles of the obtained materials are highly dispersed, the specific surface area is high, and the molecular weight is high; the size of the metal Cu can reach the nanoscale, the metal content can reach 45%, when the catalyst is used for catalyzing the methanol liquid phase reforming hydrogen production reaction, no CO or CH4 byproduct gas is generated in the whole hydrogen production process, and the stability and the service life of the catalyst are superior to those of a common copper-based metal catalyst; the invention provides an efficient and low-cost non-noble metal catalyst for medium-low temperature methanol liquid phase reforming hydrogen production, and has certain significance for the development of subsequent low temperature methanol liquid phase reforming hydrogen production catalysts.

The present invention relates to a method for preparing a porous graphitized carbon carrier loaded with a platinum-based catalyst, and belongs to the technical field of fuel cell catalysts. In the currently disclosed technology, the selected carbon carrier is a traditional carbon black material, which limits the formation of the pore structure of the carbon carrier. Therefore, the present invention proposes a method of using a green and environmentally friendly soluble polymer material as a carbon carrier precursor. Through gelation treatment, heat treatment, acid washing and other process designs, platinum-based catalyst particles will grow in situ and disperse in the porous carbon carrier. The porous graphitized carbon carrier designed and prepared by the present invention can have the advantages of high graphitization degree, rich pore structure, strong hydrophilicity, etc.; the platinum-based catalyst loaded on the porous graphitized carbon carrier prepared by the present invention can effectively improve the catalytic activity and stability of the catalyst material.