296 results about "Mesoporous material" patented technology

The invention discloses a solid electrolyte membrane and a preparation method and application thereof. The solid electrolyte membrane comprises a first electrolyte close to the positive pole piece and a second electrolyte layer close to the negative pole piece. The first electrolyte layer comprises a polymer, a lithium salt and an additive, and the second electrolyte layer comprises a solid electrolyte, a polymer, a lithium salt and an additive. The first electrolyte layer has a wide electrochemical window and relatively high mechanical properties, and can be matched with a high-voltage positive electrode material and improve solid-solid interface contact. The solid electrolyte of the second electrolyte layer is mainly composed of a continuous vertical array micro-mesoporous material, has a micro-mesoporous structure and high surface adsorption energy, and can accelerate lithium salt dissociation, reduce molecular interaction between polymer chains, form a three-dimensional continuous fast ion transmission channel and a heat conduction network, and improve ionic conductivity and safety performance. The solid electrolyte membrane disclosed by the invention has excellent ionic conductivity, wide electrochemical window, high safety performance and excellent electrochemical performance.

The invention belongs to the technical field of chemical engineering, and particularly relates to a catalyst for sulfuric acid production. The samarium element is doped in the vanadium catalyst, so that the oxygen adsorption capacity of the vanadium catalyst is effectively improved, and the catalytic activity and low-temperature activity of the vanadium catalyst are improved; the modified diatomite and the mesoporous material are selected to jointly form the carrier, so that the dispersity of the active component on the catalyst can be improved, and the catalytic activity of the catalyst can be improved; diatomite is modified by adopting a dilute sulfuric acid solution under an ultrasonic condition, so that the specific surface area of the diatomite is increased, and the catalytic activity of the vanadium catalyst is improved; the vanadium catalyst is prepared by adopting an impregnation method, so that the problem of non-uniform dispersion of active components caused by a mixing and grinding method is effectively avoided, and the catalytic activity of the catalyst is further improved.

The invention discloses an antifouling agent, a micro-nano mesoporous material and a marine antifouling composition. A preparation method of the micro-nano mesoporous material comprises the following steps: S1, sequentially carrying out hydrothermal acid etching, cleaning, roasting and cooling on a micro-nano mesoporous material matrix for later use; s2, dissolving a DCOIT-like derivative and halogenated fatty alcohol in a solvent, heating and refluxing, dropwise adding a mixed solution of diisocyanate and a catalyst, and continuously carrying out heat preservation reaction; and S3, grinding and bulking the micro-nano mesoporous material modified matrix prepared in the step S1 to fully release agglomerated fiber bundles, ultrasonically dispersing the fiber bundles in a solvent, adding the dispersed fiber bundles into a system in the step S2, carrying out a heating reaction, purifying, drying, grinding, and storing. Activated silicon hydroxyl enriched in a micro-nano mesoporous material modified matrix is covalently linked with degradable terminal isocyanate (R-NCO) in quaternized DCOIT derivatives, and the method has the properties of high efficiency, broad spectrum, low toxicity and long-acting effect.

The invention discloses an aminopropyltriethoxysilane modified gasified slag mesoporous material and application thereof to carbon dioxide adsorption, gasified slag is used as a raw material, the gasified slag is ground by a ball mill and then soaked in hydrochloric acid to prepare the mesoporous material, then aminopropyltriethoxysilane is used for modification, and the mesoporous material is obtained. The amino group is introduced into the surface of the mesoporous material in a chemical bond mode to realize firm combination with a mesoporous material framework, and the aminopropyltriethoxysilane modified gasification slag mesoporous material is obtained. Compared with the prior art, the obtained mesoporous material has good chemical stability and can be used in high temperature, strong acid and strong alkali for a long time; and the amino group on the mesoporous material has strong alkalinity, can be subjected to acid-base reaction with carbon dioxide, realizes capture of carbon dioxide, and has good adsorption rate and adsorption capacity. Meanwhile, the preparation method of the mesoporous material is easy to operate, raw materials are cheap, high-quality utilization of solid waste is achieved, and economic benefits are improved.

The invention relates to a preparation method and application of a silicon-based biodegradable essence microcapsule, and the preparation method of the silicon-based biodegradable essence microcapsule comprises the following steps: S1, uniformly mixing oily essence and a silicon-based mesoporous material to obtain an oil phase; dissolving an emulsifier in water to obtain a water phase; s2, mixing the oil phase and the water phase, and homogenizing to obtain an emulsion; and S3, adding a diisocyanate compound and polypropylene carbonate into the emulsion, and carrying out a stirring reaction to obtain the silicon-based biodegradable essence microcapsule. A silicon-based mesoporous material is introduced in the process of preparing the essence microcapsule by taking polypropylene carbonate as a wall material, a synergistic wrapping system of the essence microcapsule is constructed, and the volatile essence is subjected to double-layer protection by utilizing a mode of combining physical adsorption and chemical crosslinking embedding, so that the fragrance retention time of the essence is prolonged, and the fragrance retention time of the essence is prolonged. Meanwhile, the embedding rate of the microcapsule can be effectively improved, and the application of the essence microcapsule in actual production can be promoted by combining the biodegradable characteristic of the polypropylene carbonate.

The invention provides a preparation method of an air cathode material of a mesoporous Cu-N-C zinc-air battery. The preparation method comprises the following steps: 1, uniformly spreading a zinc-based imidazole framework precursor embedded with SiO2 nanoparticles in a corundum boat, placing the corundum boat in the center of a tubular furnace, and carrying out pre-pyrolysis in an Ar atmosphere to obtain nitrogen-doped carbon NC powder containing SiO2 nanoparticles; and 2, removing the SiO2 nanoparticles by using a 40% hydrofluoric acid solution to obtain the mesoporous NC powder. And 3, preparing a copper ammonia ion [Cu (NH3) 4] < 2 + > solution with a certain concentration, adding the mesoporous NC powder, carrying out ultrasonic treatment at room temperature, stirring, and carrying out high-temperature pyrolysis to obtain the mesoporous Cu-N-C material. The material has rich mesoporous structures and excellent oxygen reduction activity, and realizes high power density and excellent charge-discharge cycle stability when being used as an air cathode of a zinc-air battery.

The invention belongs to the field of inorganic non-metallic materials, and particularly relates to a method for preparing a strongly acidic Al-MCM-41-T mesoporous catalyst from an MWW layered molecular sieve precursor through a crystal transformation method and application of the strongly acidic Al-MCM-41-T mesoporous catalyst. Specifically, an aluminum-containing MWW layered molecular sieve precursor (namely MCM-22 (P)) is used as a raw material, and the Al-MCM-41-T catalyst which is large in surface area, high in framework aluminum content and strong in acidity is prepared through a crystal transformation method. The obtained mesoporous material is used for the liquid phase alkylation reaction process of lignin-derived phenols and cyclic alcohols / cycloolefins. The Al-MCM-41-T synthesized by the method has a high specific surface area (more than 1000m < 2 > g <-1 >), a high pore volume (more than 1.4 cm < 3 > g <-1 >) and a regular and concentrated mesoporous structure (2-4nm), meanwhile, the content of framework aluminum is high, and the total Bronsted acid concentration, especially the strong Bronsted acid concentration, is high and far exceeds that of an Al-MCM-41-C material prepared by a conventional hydrothermal method. The catalyst shows excellent activity and polyalkyl product selectivity in an acid-catalyzed liquid-phase alkylation reaction.

The invention discloses a preparation method and application of an iron-zirconium double-metal modified chitosan alkaline lignin aerogel material, and belongs to the technical field of aerogel material preparation. The method comprises the following steps: firstly dissolving chitosan to obtain a chitosan solution, adding alkaline lignin into the chitosan solution, then adding ferric salt and zircon salt to obtain an iron / zirconium / chitosan alkaline lignin mixed solution, and cross-linking the iron / zirconium / chitosan alkaline lignin mixed solution through a cross-linking agent to obtain the iron / zirconium / chitosan alkaline lignin composite material. And finally, freeze-drying to obtain the iron-zirconium double-metal modified chitosan alkaline lignin aerogel material. The method is simple and convenient in process, low in cost, green, environment-friendly and easy for large-scale production. The prepared aerogel material has the characteristics of a mesoporous material, is good in stability and mechanical property, has excellent performance in the aspect of adsorbing heavy metal and metalloid ions, can be regenerated and reused through desorption after adsorption, and can be applied to the fields of environmental governance and the like.

The invention provides a composite catalyst for supercritical water gasification hydrogen production and a preparation method and application thereof, and relates to the technical field of organic solid waste recycling, the composite catalyst comprises a carrier, an active component and an auxiliary agent; the carrier is prepared from a ZrO2 mesoporous material co-doped with Ce and La; the active component comprises Ni-Co bimetallic nanoparticles, and the Ni-Co bimetallic nanoparticles are subjected to vulcanization treatment to form a core-shell structure in which Ni-Co metal is wrapped by sulfur; and the auxiliary agent comprises MoO3. According to the composite catalyst, a Ce-La-ZrO2 mesoporous material serves as a carrier, Ni-Co bimetallic nanoparticles serve as an active component, a core-shell structure (NiCo at S) is formed after vulcanization treatment, the surface of the core-shell structure is covered with a layer of sulfur atoms, carbon deposition can be effectively inhibited, the chlorine poisoning resistance of the catalyst is enhanced through the added MoO3 auxiliary, and the service life of the catalyst is prolonged.

The invention discloses a preparation method and application of a three-dimensional hierarchical ordered mesoporous zeolite confinement NiCo alloy catalyst, and belongs to the technical field of catalytic upgrading of lignin model compounds. According to the catalyst, a bimetallic active component is formed through metal Ni and Co, a coating confinement is formed on the active component in the process of synthesizing the three-dimensional graded ordered mesoporous 3DZSM-5 zeolite, and the prepared catalyst is small in metal particle size and high in dispersity. The existence of the three-dimensional graded ordered mesopores is beneficial to contact, diffusion and transfer of reactants in pore channels. The catalyst prepared by the preparation method disclosed by the invention is used for preparing 2-methoxy-4-methylphenol by hydrodeoxygenation of vanillin, and shows excellent catalytic performance. Almost no metal is leached in the catalyst circulation process, the subsequent separation is simple and convenient, the cost is low, and industrial production is facilitated.

The invention belongs to the technical field of fine chemical engineering, and discloses a synthesis method of a malonate compound, which comprises the following steps: under the action of a heterogeneous catalyst, carrying out hydrolysis-esterification reaction on cyanoacetic acid and alcohol, and after the reaction is finished, carrying out post-treatment to obtain the malonate compound, the heterogeneous catalyst comprises a carrier and an active component; the active component comprises ionic liquid and active metal; the carrier is an ordered mesoporous material; the active metal is alkaline earth metal. According to the method, malonate products can be obtained, the problems of low yield, serious equipment corrosion and large amount of three wastes are solved, efficient synthesis of malonate compounds is realized, meanwhile, the production efficiency is improved, and the environmental pollution is greatly reduced.

The invention relates to the technical field of wastewater treatment, and particularly discloses a degradation method and application of microplastics in aquaculture wastewater. The degradation method comprises the steps of preparation of the mesoporous structure magnetic immobilized material, pretreatment, adsorption-enzymolysis, microbial degradation, magnetic separation, precipitation and the like. The compound enzyme is efficiently fixed through the shell layer of the mesoporous material and the mesoporous structure, enzyme loss is avoided, and the total microplastic removal rate reaches 94.5% or above in cooperation with targeted degradation of the compound enzyme on PET, PE and PP; the composite thermoduric bacteria relay enzymatic hydrolysate is deeply mineralized, and a staged treatment agent is matched to enhance mass transfer, so that the microbial activity is improved by 3 times; the mesoporous material is protected by a shell layer, the enzyme activity retention rate exceeds 85%, the COD of effluent is smaller than or equal to 50 mg / L, the effluent meets the emission requirement, and the method is suitable for multi-scene micro-plastic pollution treatment and has high efficiency, economical efficiency and environment friendliness.

The invention relates to the technical field of solid-state batteries, in particular to a solid-state electrolyte precursor solution, a solid-state electrolyte membrane and a solid-state battery. The solid electrolyte precursor solution is mainly prepared from a polymer monomer, a mesoporous material, an organic solvent, an initiator and a lithium salt; the polymer monomer comprises an unsaturated amide monomer and an unsaturated boric acid ester monomer; the structural formula of the unsaturated amide monomer is shown as a general formula (I); the structural formula of the unsaturated boric acid ester monomer is shown as a general formula (II); # imgabs0 # (I); and # imgabs1 # (II). The supramolecular solid electrolyte material is designed, the mesoporous material is introduced to increase the specific surface area of lithium conduction of an interface, meanwhile, coordination with lithium ions can be formed through contained special groups, migration of the lithium ions is promoted, and the electrolyte membrane has high ionic conductivity.

The invention discloses a flame-retardant mesoporous thermal insulation coating and a preparation method thereof, and relates to the technical field of coatings. The preparation method comprises the following steps: S1, preparing a polyurethane-acrylic emulsion; s2, mixing a mesoporous material, a dispersing agent, absolute ethyl alcohol and deionized water to obtain mesoporous slurry; and S3, preparing melamine modified ammonium polyphosphate. S4, mixing hollow microspheres, ethanol and deionized water, and performing ultrasonic dispersion; and adding the mesoporous slurry, dipentaerythritol, melamine, melamine modified ammonium polyphosphate and a dispersing agent, grinding, adding a polyurethane-acrylic emulsion and an auxiliary agent, and dispersing at a medium speed to obtain the flame-retardant mesoporous thermal insulation coating. The components are designed and optimized, so that a coating formed after the prepared flame-retardant mesoporous thermal insulation coating is cured has excellent flame retardance, thermal insulation property and mechanical property.

The invention discloses a synthesis method of a metal organic framework mesoporous material, which comprises the following steps: weighing a PEO-PPO-PEO triblock copolymer in deionized water, violently stirring to dissolve the PEO-PPO-PEO triblock copolymer, adding a hydrochloric acid solution, keeping the temperature at 35-40 DEG C for 0.5-1 hour, and slowly dropwise adding a mixed silicon source solution of tetraethoxysilane and organic silicon while violently stirring; stirring the reaction mixture at 35-40 DEG C for 20-30 hours to obtain turbid liquid with white particles, cooling the turbid liquid to room temperature, then transferring the turbid liquid into a high-pressure reaction kettle, and heating the turbid liquid in a drying oven at 110-120 DEG C for 40-60 hours; according to the synthesis method of the metal organic framework mesoporous material, a tripyrimidine structure is prepared into an organic silicon precursor, the organic silicon precursor reacts with a PEO-PPO-PEO triblock copolymer to prepare a mesoporous hybrid compound, and the mesoporous hybrid compound can be used for removing sulfonamide antibiotics in a water body and is applied to water body treatment.

The invention relates to the technical field of heat preservation felts, in particular to a mesoporous heat preservation and insulation felt with hydrophobicity and a preparation technology of the mesoporous heat preservation and insulation felt. In order to enhance the heat insulation performance of the heat preservation felt, a mesoporous material is mixed with a hydrophobic modified resin material to enhance the heat preservation and insulation felt; fluorosilicone modified silane is prepared, fluorine elements and silicon elements are introduced into the fluorosilicone modified silane, sulfydryl groups introduced in the reaction process are reserved, the fluorosilicone modified silane further participates in subsequent cross-linking of polyurethane emulsion, the cross-linking degree of the resin is increased, and the physical performance of the resin is improved; the fluorine element and the silicon element are introduced in the process, so that the hydrophobicity of the material can be effectively improved, and the heat insulation capability of the heat insulation felt in a humid environment is improved; on the basis, a mesoporous material is further introduced into the hydrophobic polyurethane emulsion, and the defect that the thermal conductivity is improved due to the fact that the polyurethane emulsion modifies the heat preservation felt is overcome by means of the hollow characteristic of the mesoporous material.

The invention discloses an antibacterial gel composite material as well as a preparation method and application thereof. The antibacterial gel composite material comprises photo-crosslinking hydrogel, and the photo-crosslinking hydrogel is coated with a drug-loaded mesoporous material; the drug-loaded mesoporous material comprises polydopamine, mesoporous biological ceramic and a growth factor which are arranged in sequence; the surface of the mesoporous biological ceramic is coated with polydopamine; growth factors are encapsulated in the mesoporous biological ceramic; the mesoporous biological ceramic is doped with metal ions with an antibacterial effect. According to the antibacterial gel composite material provided by the invention, in the composite material, mesoporous biological ceramic is coated with polydopamine, so that ionic products and doped antibacterial ions in drugs and biological ceramic can be slowly released, the burst release is relatively small, and stable release is realized; in addition, by regulating and controlling the doping amount of the antibacterial ions in the porous biological ceramic and the mass of the medicine loaded in the doped mesoporous biological ceramic, the release curve of the medicine and the ions can be effectively regulated and controlled.

The invention discloses a method for preparing a high-performance polyalkylene oxide compound through catalyst modification and application of the high-performance polyalkylene oxide compound. An ammonia-calcium catalyst system is modified, an MgAl oxide mesoporous material which can provide an Al active site and can also serve as a carrier is introduced to serve as a cocatalyst, in cooperation with a conventional carrier, the ring-opening polymerization effect of epoxide, especially branched-chain epoxide is improved, full polymerization of branched-chain alkane is achieved, and the high conversion rate of 96% or above is achieved; meanwhile, the molecular weight can be controlled, and the molecular weight can be further increased. Compared with polyoxyethylene, the polyalkylene oxide prepared by the invention has better flexibility and mechanical properties, and can improve the problem that polyoxyethylene is fragile. And meanwhile, the crystallinity of the product is also reduced, and the proportion of an amorphous region is increased. Compared with traditional PEO, in the aspect of solid electrolyte, the crystallinity and the melting point of the PEO are reduced, the ionic conductivity and the mechanical property of the PEO are improved, and the electrochemical performance is improved.

The invention provides a water-based radiation cooling coating, a coating and a preparation method thereof, the raw materials of the coating comprise an inorganic filler, and the inorganic filler comprises a mesoporous material, a metal oxide and carbonate. The coating provided by the invention can effectively reflect sunlight and can effectively radiate heat in a passive manner, so that the cooling and energy-saving effects are realized.

The application relates to the technical field of wastewater treatment, and particularly discloses a degradation method and application of microplastics in aquaculture wastewater. The degradation method comprises the steps of preparation of a mesoporous structure magnetic immobilized material, pretreatment, adsorption-enzymolysis, microbial degradation, magnetic separation, precipitation and the like. The shell layer and the mesoporous structure of the mesoporous material are used to efficiently immobilize composite enzymes, so that enzyme loss is avoided, and the composite enzymes are used for targeted degradation of PET, PE and PP, and the total microplastic removal rate is more than 94.5%. The composite heat-resistant bacteria relay enzymolysis product is deepened and mineralized, and a phased treatment agent is matched to enhance mass transfer, so that the microbial activity is increased by 3 times. The mesoporous material is protected by the shell layer, the enzyme activity retention rate is more than 85%, the effluent COD is less than or equal to 50 mg / L, meets the discharge requirements, is suitable for microplastic pollution treatment in multiple scenes, and has the advantages of high efficiency, economy and environmental friendliness.

The invention provides a permeable reactive barrier filling material as well as a preparation method and application thereof. The permeable reactive barrier filling material provided by the invention comprises a first molecular sieve, a second molecular sieve, a metal oxide, a mesoporous material and a binder, the silica-alumina ratio of the first molecular sieve is greater than or equal to 200, and the silica-alumina ratio of the second molecular sieve is 5-80. The permeable reactive barrier filling material disclosed by the invention comprises two molecular sieves with different silica-alumina ratios and metal oxides, can effectively combine adsorption and oxidation principles, is applied to treatment of soil and underground water, has good treatment performance on low-concentration organic pollutants in water, and is excellent in regeneration performance.

The electrode catalyst of the present disclosure includes a mesoporous material and catalytic metal particles containing platinum and a metal different from platinum, the catalytic metal particles being supported at least inside the mesoporous material, and the mesoporous material has a mode radius of 1 nm or more and 25 nm or less and a pore surface area of 1.0 cm. 3 / g or more 3.0cm 3 / g or less, and the catalytic metal has the chemical formula Pt x Co 1-y Ni y wherein x of the catalytic metal ranges from 1 to 3, and y ranges from 0.20 to 0.47, and the catalytic metal particles contain an L10 phase.

The application provides a halide solid-state electrolyte composite with high air stability and mechanical enhancement, a preparation method thereof and a full solid-state battery, and relates to the technical field of full solid-state batteries. In view of the problems of the existing halide solid-state electrolyte, such as sensitivity to humidity, easy hydrolysis and insufficient mechanical strength, the application forms a continuous multi-layer uniform pore structure by uniformly dispersing mesoporous reinforcing material particles in the halide solid-state electrolyte matrix. The composite significantly improves the humidity resistance and mechanical properties while maintaining high ionic conductivity: after being exposed to a 50% relative humidity environment for 1 hour, the ionic conductivity retention rate is not less than 90%, and the release of harmful gases such as HCl is effectively inhibited. The preparation method comprises wet mixing, drying and molding of the halide matrix and the mesoporous material in an inert atmosphere, and the process is simple and suitable for large-scale production. The composite can effectively improve the environmental stability and cycle performance of the full solid-state battery.

The invention discloses a mesoporous material taking a cement-based material as a precursor as well as a preparation method and application of the mesoporous material, and belongs to the technical field of building materials. The preparation method comprises the following steps: taking a cement-based material as a precursor, extracting silicate radicals and aluminate radicals, introducing a template agent in a subsequent polymerization process, and preparing the mesoporous material through a self-assembly process. The method is simple in process, low in energy consumption and small in pollution, and silica tetrahedrons and alumina tetrahedrons with different chain lengths and different proportions in the cement-based material are extracted through carbonization treatment; the performance of the mesoporous material is controllable according to the hydration degree of the cement-based material, the chain lengths of silicate radicals and aluminate radicals, the proportion of silicate radicals and aluminate radicals, the types of template agents and the like. The mesoporous material can realize high-value cyclic utilization of a cement-based material and waste thereof, the specific surface area, the pore volume, the particle size, the silica-alumina ratio, the crystallinity and other key properties of the mesoporous material can be flexibly regulated and controlled, and the mesoporous material can be widely applied to the fields of catalysis, adsorption, drug transportation, sensors and the like.

The present application relates to the technical field of silk finishing, and in particular to a silk finishing liquid and a treatment method using the silk finishing liquid; wherein, a silk finishing liquid comprises a microcapsule mixture, an adhesive, a cross-linking agent and an organic acid; the microcapsule mixture is a mixture of microcapsules with skin care oil as a core material and polyurethane as a wall material; the microcapsules containing the skin care oil are bonded to the silk fabric through an adhesive, and mesoporous material is added to the wall material of the microcapsule to enhance the strength of the polyurethane wall material and reduce the rupture of the microcapsules during the washing and wearing processes of the silk fabric; at the same time, the skin care oil in the microcapsule is slowly released through the mesoporous material, thereby enhancing the moisturizing effect of the silk fabric and the washability of the skin care oil in the silk fabric.

The utility model discloses a device for extracting carbon in coal gasification slag, which comprises a shell, a crushing device fixedly arranged above the shell, a screening device arranged on the inner wall of the shell, a cleaning device fixedly arranged below the screening device, a collecting device movably arranged in the cleaning device, a lifting rod fixedly arranged above the collecting device, and a discharge hole formed in one side of the shell, through mutual cooperation of the structures, industrial solid waste-coal gasification slag discharged in a coal chemical industry industrial park is further utilized, carbon in the coal gasification slag is extracted, large solid particles and ash are separated out, and a carbon-containing substance (carbon powder) is obtained; various building materials (such as concrete admixtures and concrete fine aggregates), mesoporous materials, silicon fertilizers, soil amendment materials and other products can be conveniently prepared from the silicon-aluminum components subjected to carbon extraction.

The disclosure relates to a modified aluminosilicate inorganic mesoporous material and a preparation method therefor. Through calcination modification of nitrate and modification of alkaline chitosan, and through the regulation of parameters such as a particle size and a specific surface area of the aluminosilicate, a concentration of a nitrate solution, a solid-to-liquid ratio of aluminosilicate particles to the nitrate solution, a calcination time, a calcination temperature, and a pH value, a mass fraction and a temperature of the chitosan solution, the modified aluminosilicate inorganic mesoporous material with a stable specific surface area ranging from 30 m2 / g to 40 m2 / g can be stably prepared. Moreover, the size of a pore channel inside the mesoporous material can be as small as sub-nanometer scale.

The application provides a method for high-selectivity adsorption of extremely low concentration NH3 by using alcohol amine ionic liquid microporous materials, and belongs to the technical field of gas separation and purification. In the method, the ionic liquid microporous material uses a mesoporous material as a carrier, and is modified by a multi-site alcohol amine ionic liquid to form a novel ionic adsorption material with selective adsorption NH3 sites and microporous structure. Since the proton hydrogen on the cation of the alcohol amine ionic liquid can form a hydrogen bond with NH3, and the material has a micropore effect, the material can efficiently capture NH3, especially has high selectivity at extremely low NH3 concentration, and the adsorbed NH3 can be completely desorbed by heating or reducing pressure, and the adsorbent has good circulation after regeneration, and still has a high adsorption capacity after ten cycles, thereby providing a new way for efficient purification and separation of NH3.

The application discloses a light reflection and enhancement film and an enhanced photovoltaic module with the same, the light reflection and enhancement film comprises a buffer layer and a substrate layer, the preparation raw materials of the buffer layer comprise an ethylene polymer, a mesoporous composite material, a filler and an additive, and the preparation raw materials of the substrate layer comprise a propylene polymer alloy, the mesoporous composite material, the filler and the additive. The light reflection and enhancement film and the enhanced photovoltaic module with the same have the advantages that the mesoporous material is compounded with the nanometer material to form the mesoporous composite material, and then the mesoporous composite material is used for preparing the buffer layer and the substrate layer, so that the reflectivity of the ultraviolet region of 330-380 nm, the adhesion between the buffer layer and the battery and the adhesion between the substrate layer and the adhesive film are improved, the light reflection and enhancement film is applied to the gap position between the battery pieces on the photovoltaic battery, the battery hidden crack and the fragments can be avoided, and the module power can be greatly improved compared with the application on the glass.

The invention relates to a monatomic catalyst for preparing formic acid through CO2 hydrogenation, in particular to the technical field of catalysts. The catalyst is composed of an active center, a carrier and an auxiliary agent, wherein the active center is composed of atomic-scale dispersed transition metal single atoms; the carrier is selected from a two-dimensional material or a mesoporous material with surface defects; the auxiliary agent comprises a composite system of alkali metal oxide and rare earth oxide. The preparation method comprises the following steps: constructing carrier defects through microwave plasma etching or gradient hydrogenation, precisely loading single atoms through pulse atomic layer deposition, assembling the auxiliary agent through supercritical CO2 assistance, and dynamically regulating and controlling process parameters through in-situ monitoring. The active center, the carrier and the auxiliary agent cooperate to inhibit side reaction, the yield of the target product is greatly improved, and the subsequent separation and purification cost is reduced. And the preparation process is accurate and controllable, and large-scale production is facilitated. Meanwhile, various steps are selected, different application requirements are met, the formic acid selectivity is larger than 90%, and the stability is larger than or equal to 500 h.