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39results about How to "Regular channel structure" patented technology
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Flexible polymer-based graphene foam material and preparation method thereof
The invention relates to the field of graphene foam composite materials, and in particular relates to a porous flexible polymer-based graphene foam material and a preparation method thereof. According to the flexible polymer-based graphene foam material provided by the invention, in the foam material, polymer foam accounts for 90-99.9wt%, and graphene accounts for 0.1-10wt%. Compared with the prior art, the volume of the flexible polymer-based graphene foam material provided by the invention can be prepared as required; and the flexible polymer-based graphene foam material has excellent compression and resilience mechanical properties, electrical conductivity and surface hydrophobicity.
Owner:SHANGHAI JIAO TONG UNIV
Preparation method of aptamer photoelectrochemical sensor for high-sensitivity high-selectivity detection of MC-LR
InactiveCN104897746AHigh sensitivityHighly selective detectionMaterial electrochemical variablesAptamerNanoparticle
The invention relates to a preparation method of an aptamer photoelectrochemical sensor for high-sensitivity high-selectivity detection of MC-LR. The preparation method comprises preparing titanium dioxide nanotubes on a titanium matrix by an anodization method, carrying out modification with cadmium sulfide nanoparticles, functionally assembling chitosan and glutaraldehyde to the surface of an electrode so that a photoelectric biological interface is built, and bonding a MC-LR aptamer with a specific base sequence to the surface of the base electrode by chemical bonding so that the MC-LR aptamer photoelectrochemical sensor is prepared. Through combination of a supersensitive photoelectric analysis technology and an aptamer technology with a MC-LR specific recognition function, the preparation method realizes high-sensitivity high-selectivity analysis detection of MC-LR, and has the MC-LR detection limit of 5.3*10<-12> mol / L and a linear detection range of 7.2*10<-8> to 8*10<-12> mol / L. Compared with the prior art, the preparation method has the advantages of simple processes, fast response and low cost and can realize high-sensitivity high-selectivity analysis of MC-LR.
Owner:TONGJI UNIV
Hydrophobic and oleophobic open-cell foam material and preparation method thereof
The invention provides a hydrophobic and oleophobic open-cell foam material and a preparation method thereof, belonging to the technical field of functional composite materials. The objective of the invention is to overcome the problem that a single functional characteristic cannot meet demands of people. The hydrophobic and oleophobic open-cell foam material is prepared from polymer foam and fluorine-containing silane coupling agent modified graphene or graphene ribbons, wherein the mass percentage of the polymer foam in the open-cell foam material is 80 to 97%, the mass percentage of the fluorine-containing silane coupling agent modified graphene or graphene ribbons in the open-cell foam material is 3 to 20%, the water contact angle of the open-cell foam material is greater than or equal to 140 DEG, and the contact angle of diesel oil is greater than or equal to 110 DEG. The open-cell foam material is firm in absorption and good in washing fastness; and the preparation method is simple, rapid and easy to operate.
Owner:HANGZHOU NORMAL UNIVERSITY
Graphene ribbon modified polymer-based foam material and preparation method and application thereof
ActiveCN105647159AOvercoming the difficulty of direct and firm adsorption on polymer-based foamsImprove hydrophobicityWater/sewage treatment by sorptionCarbon fibersCarbon nanofiber
The invention belongs to the technical field of functional composite materials, and provides a graphene ribbon modified polymer-based foam material and a preparation method and application thereof in order to solve the problems that a carbon tube and carbon nanofiber as hydrophobic materials are difficultly adsorbed onto the surface of polymeric foam and the adsorption capacity is high. The water contact angle of the graphene ribbon modified polymer-based foam material is more than or equal to 130 degrees, and the foam material is made of 85-99% by weight of foam and 1-15% by weight of grapheme ribbons. The prepared modified foam has the advantages of good hydrophobicity, high oil absorption rate, good compression-resilience mechanical performance, reuse and the like, the preparation method is simple, quick and easy to operate, and the raw materials are cheap and easy to obtain. The application prospects are great on sewage treatment, oil water separation and other aspects.
Owner:HANGZHOU NORMAL UNIVERSITY
Preparation method of nitrogen-doped ordered mesoporous carbon material
The invention discloses a preparation method of a nitrogen-doped ordered mesoporous carbon material. The preparation method comprises the following steps: performing polymerization reaction on 2,4,6-trichloro-1,3,5-triazine and a polyamine compound in an organic solvent, adding an acid-binding agent to neutralize acid generated during polymerization reaction, so as to promote the polymerization reaction; filtering and drying to obtain a carbon-nitrogen material precursor, and performing high-temperature carbonization under inert atmosphere; cooling to room temperature, removing a template agent by utilizing hydrofluoric acid, to obtain the nitrogen-doped ordered mesoporous carbon material. The polymerization process of the precursor is simple and easily controlled and safe, the nitrogen-doped ordered mesoporous carbon material is good in the integration with a template, the porous structure is controllable, the cost is low, and the equipment is simple and convenient in requirement. The method is high in repeatability, and high in reaction yield; the product is good in uniformity, high in nitrogen content, and regular in structure; the whole process is simple and convenient. The prepared nitrogen-doped ordered mesoporous carbon material has porous ducts with ordered heights, large in specific surface area, the apertures are uniformly distributed, and the nitrogen-doped ordered mesoporous carbon material is high in stability, and has wide application prospects in the field of catalytic and electrode materials, and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Preparation method of catalytically cracked gasoline hydrodesulfurization catalyst containing nanocrystalline multi-stage duct ZSM-5 molecular sieve
ActiveCN104549524AEfficient removalRegular channel structureOrganic-compounds/hydrides/coordination-complexes catalystsHydrocarbon oils refiningHydrodesulfurizationActive component
The invention relates to a preparation method of a catalytically cracked gasoline hydrodesulfurization catalyst containing a nanocrystalline multi-stage duct ZSM-5 molecular sieve. The catalytically cracked gasoline hydrodesulfurization catalyst mainly consists of the following components in percentage by weight: 5-30% of active components, 4-9% of an active component auxiliary, 1-5% of a modifying agent and 60-90% of carriers, wherein the active components comprise at least one of Mo and W metal elements; the active component auxiliary comprise at least one of Co and Ni elements; the modifying agent is one of metals La and Ce, or the compounding of the metal La and Ce; the carriers are composite carriers using aluminum oxide and an NCMZ molecular sieve as main bodies. According to the invention, through the unique framework and duct structure of the NCMZ molecular sieve, the advantages of a micropore ZSM-5 molecular sieve and the advantages of mesoporous materials are combined, so that the reaction efficiency is further improved, and increasing product quality is finally realized. The FCC gasoline hydrodesulfurization catalyst disclosed by the invention can enable a reaction to be carried out under more moderate conditions.
Owner:YANSHAN UNIV
Preparation method of zirconium-containing solid super acid
InactiveCN104971770AGood hydrothermal stabilityRegular channelMolecular sieve catalystsMolecular sieveAlkyl transfer
The invention discloses a preparation method of a zirconium-containing solid super acid. According to the preparation method, template ion exchange is adopted so as to introduce a certain amount of zirconium element into unroasted pure silicon molecular sieve; Zr-MFI is obtained via filtering, washing, and roasting; a solution with a certain SO4<2-> concentration is used for dipping the obtained molecular sieve; and the solid super acid is obtained via filtering, drying, and roasting. Compared with molecular sieves of other skeleton types, the MFI-type skeleton structure obtained via preparation catalysis possesses neat pore passage structures and relatively thick pore walls, and excellent hydrothermal stability; pore passage regularity can be maintained for a long time under mechanical action of flow such as high temperature high pressure flow, collapse is not induced, stability is high, acid strength is high, the zirconium-containing solid super acid possesses both excellent performance of solid molecular sieves, acidity of super acid, and uniformly distributed acid sites, is a novel acid catalytic material with enormous potential; and application prospect in reactions such as alkylation, isomerization, esterification, acylation, polymerization, and oxidation is promising.
Owner:XIANGTAN UNIV
Method for electrochemical synthesis of Cu3 (BTC) 2 as catalyst and NH3-SCR application of Cu3 (BTC) 2
InactiveCN104801341AUniform crystal formFlexible approachOrganic-compounds/hydrides/coordination-complexes catalystsDispersed particle separationEthylenediamineOctahedron
The invention relates to a method for electrochemical synthesis of Cu3 (BTC) 2 and belongs to the field of preparation technologies of catalytic material and nanometer material. The method comprises the following steps: preparing a mixed solution of 1-butyl-3 methylimidazole bromide, trimesic acid, methyl alcohol and ethyl alcohol, adopting a copper electrode as an anode and a platinum electrode as a cathode, and adjusting the impressed voltage through a mixed solution of EDTA and DETA for electrolysis to obtain the Cu3 (BTC) 2 material. According to the invention, the adopted raw materials are cheap and easy to obtain, the operation is simple and easy, the preparation method is simple and easy to control, the equipment requirements are low, the environmental friendliness is achieved, and the Cu3 (BTC) 2 material is of a regular octahedron structure and has a diameter of 10-20 nm and a specific area of 950 m<2>g<-1>; the test conditions of the reaction are as follows: 500 ppm of NO, 500 ppm of NH3, 5% of O2, N2 as balance gas, the total flow of exhaust gas being 100ml / min, and the denitration catalytic efficiency reaching 100% at 230-280 DEG C.
Owner:DALIAN UNIV OF TECH
Method for preparing crosslinking cyclodextrin polymer material through microwave assisting
ActiveCN105924658AShort reaction timeRaise the reaction temperatureWater contaminantsWater/sewage treatmentSorbentWastewater
The invention relates to a method for preparing a crosslinking cyclodextrin polymer material through microwave assisting. The method is used for preparing an adsorbent material for treating organic waste water. The method includes the steps that diisocyanate is added into cyclodextrin, composite catalysts including a tin catalyst and an amine catalyst are added, and under microwave irradiation, cyclodextrin is subjected to a polymerization reaction to prepare a crosslinking cyclodextrin polymer; used microwave power is 50-1100 W, microwave frequency is 2450 MHz, and the microwave irradiation time is 0-12 min; the prepared crosslinking cyclodextrin polymer material has the advantages of a regular pore structure and a large specific surface area. The polymerization reaction is carried out under the microwave irradiation condition, compared with a reaction without the microwave irradiation condition, on one hand, reaction time is shortened, and on the other hand, the synthesized polymer material has the larger specific surface area and the regular pore structure, the capacity for adsorbing organic pollutant in the organic waste water is improved, and meanwhile the reaction yield is increased.
Owner:淄博旭尧生物科技有限公司
Method for preparing lithium-sulfur battery diaphragm material by using fluorine-containing covalent organic framework material
PendingCN114784452AInhibition of the shuttle effectReduce purchasesLi-accumulatorsCell component detailsLithium–sulfur batteryLithium sulfur
The invention discloses a method for preparing a lithium-sulfur battery diaphragm material from a fluorine-containing covalent organic framework material, and belongs to the technical field of energy materials. A novel COF material (COF-F) rich in fluorine atoms serves as a modified diaphragm material of a lithium-sulfur battery, diaphragm modification has the shuttle effect influence on the lithium-sulfur battery and the anchoring effect on polysulfide, and the novel COF material is successfully prepared in a gradual heating mode and has high crystallinity. And when being used as a modified diaphragm material of the lithium-sulfur battery, the modified diaphragm material can reinforce anchoring of polysulfide and aims at improving the electrochemical performance of the lithium-sulfur battery. And compared with the same COF structure without fluorine, the characteristics of the material are highlighted. The material has triazinyl and fluorine functional groups, so that the chemical bond action on polysulfide can be enhanced, and the cycle performance of the lithium-sulfur battery can be remarkably improved.
Owner:NANJING UNIV OF TECH
Silicon dioxide-modified heavy metal waste water adsorbent, and preparation method thereof
InactiveCN106732445AImprove effectivenessImprove adsorption capacityOther chemical processesWater contaminantsSodium bicarbonateSalicylaldehyde
The invention discloses a silicon dioxide-modified heavy metal waste water adsorbent, and a preparation method thereof. The silicon dioxide-modified heavy metal waste water adsorbent is composed of, by weight, 19 to 32 parts of silicon dioxide, 13 to 26 parts of tetraethyl orthosilicate, 13 to 28 parts of 3-aminopropyltriethoxysilane, 12 to 25 parts of salicylaldehyde, 8 to 17 parts of dichloromethane, 8 to 19 parts of absolute ethyl alcohol, 9 to 17 parts of sodium bicarbonate, 7 to 19 parts of copper nitrate, 13 to 22 parts of maleic anhydride, and 12 to 25 parts of glutaraldehyde. The silicon dioxide-modified heavy metal waste water adsorbent possesses following advantages: 1, the silicon dioxide-modified heavy metal waste water adsorbent contains mesoporous silica with chelating effect and a highly ordered structure, the specific surface area is large, the channel structure is uniform, the aperture is large and adjustable, and adsorption capacity is large; 2, the silicon dioxide-modified heavy metal waste water adsorbent possesses high selectivity on heavy meal ion adsorption, and is capable of improving the effectiveness of adsorption on heavy metal at low concentration pollution.
Owner:WUXI LONGYING ENVIRONMENTAL PROTECTION TECHCO
Removal method for organic pollutants based on microporous mineral absorption and coupling as well as microwave degradation
InactiveCN102557180AEfficient removalLarge adsorption capacitySpecific water treatment objectivesWater contaminantsSorbentAbsorption column
Owner:GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
Magnetic molecular sieve catalyst doped with transition metal and preparation method and application of magnetic molecular sieve catalyst
InactiveCN107774295AEasy to makeFew stepsMolecular sieve catalystsWater contaminantsCrystallinityChemistry
The invention provides a preparation method of a magnetic molecular sieve catalyst of which a skeleton is doped with transition metal. According to the catalyst, transition element metal is used as amain catalyst, magnetic iron species are used as a magnetic source, a mesoporous molecular sieve material is used as a carrier, and the catalyst is synthesized by a hydrothermal one-pot method. The prepared catalyst has a neat porous structure of the mesoporous molecular sieve material, and large adsorption active sites are provided; high reaction activity and stability are achieved owing to the transition metal doped in the skeleton; and the wrapped magnetic iron species have good reusablility. The catalyst has the characteristics of high crystallinity, large specific surface area, good dispersibility, high stability, good reusability and the like. The effect of removing organic matters such as Orange II is excellent, and the economic benefit and social benefit are good.
Owner:禾祁(上海)化工有限公司
Preparation method and denitration application of bimetal MOF-74(Co-Cu) with meso-scale regulation and control multi-level core-shell structure
ActiveCN112625256ASmall sizeUniform crystal formOrganic-compounds/hydrides/coordination-complexes catalystsDispersed particle separationPtru catalystNitrogen oxides
The invention provides a preparation method and denitration application of bimetal MOF-74(Co-Cu) with a meso-scale regulation and control multi-level core-shell structure. According to the catalyst, cobalt-containing long-chain organic molecular salt is selected to be efficiently coordinated with an organic ligand, special surface treatment is conducted on the cobalt-containing long-chain organic molecular salt and the organic ligand, then synthesis modification is conducted in a low-temperature steam environment through crystals, and Cu metal nanometer modified by a surface active agent grows on the surface of a Co precursor to form a multi-level core-shell structure composite material with different thicknesses. The prepared catalyst has the advantages of large specific surface area, good dispersibility and high selectivity. The prepared catalyst has excellent low-temperature catalytic denitration activity, and the conversion rate of nitric oxide reaches 96% or above within an operation window of 200-275 DEG C.
Owner:DALIAN UNIV OF TECH
Three-dimensional ordered macroporous graphene carbon material embedded with MoSx nanosheets, preparation and application
ActiveCN113410459AEasy transferImprove conductivityNegative electrodesSecondary cellsMicrosphereElectrical battery
The invention discloses a three-dimensional ordered macroporous graphene carbon material embedded with MoSx nanosheets, and preparation and application thereof, and belongs to the field of functional nano composite materials. The target material provided by the invention is mainly prepared by a template-hydrothermal combined method: (1) a first step: fully dipping a polymethyl methacrylate microsphere template in a nickel nitrate precursor solution, carrying out suction filtration, drying, roasting in an inert atmosphere, and cooling to room temperature to obtain three-dimensional ordered macroporous graphene carbon as a matrix; and (2) a second step: immersing the obtained three-dimensional carbon matrix into an ammonium molybdate precursor solution, and then carrying out hydrothermal treatment at 200 DEG C to obtain the MoSx nanosheet embedded three-dimensional ordered macroporous carbon material after the reaction is finished. The composite material has the advantages of being high in specific surface area, good in conductivity, uniform in MoSx nanosheet dispersion, free of agglomeration, stable in structure and the like, and shows excellent reversible specific capacity and good cycling stability when being used for a negative electrode of a lithium ion battery.
Owner:TIANJIN UNIV
Preparation method of sludge conditioner
InactiveCN111018310AStrong anionicImprove hydrophilic abilitySludge treatmentSludgeSynthetic Polymeric Macromolecules
The invention relates to a preparation method of a sludge conditioner, which belongs to the technical field of sewage treatment. The sulfonated lignin grafted sodium acrylate copolymer is used as a raw material, a magnesium oxide modified zeolite molecular sieve is used as a carrier, and the sulfonated lignin grafted sodium acrylate copolymer is fixed on the carrier to prepare the sludge conditioner. The sulfonated lignin grafted sodium acrylate copolymer has the intermolecular force and reactivity of a polysaccharide compound; the mechanical and biological action stability and the linear chain expansion capability of synthetic macromolecules are also realized; sulfonated lignin contains a large number of -SO3H groups and has strong anionic property and strong hydrophilicity, a sodium acrylate copolymer is used as a graft comonomer, the spatial configuration of lignin is changed, the relative molecular mass is increased, functional groups with flocculation performance are introduced, and the flocculation performance of lignin is further improved.
Owner:周雯
Preparation method of porous carbon material with high thermal-oxidative stability and regular pore structure
PendingCN110790251AImprove thermo-oxidative stabilityAperture size adjustableCarbon preparation/purificationComposite materialPorous carbon
The invention discloses a preparation method of a porous carbon material with high thermal-oxidative stability and a regular pore structure. Aiming at the defects of poor thermal-oxidative stability and disordered pore structures of traditional porous carbon materials, the hetero-element-doped porous carbon material with excellent thermal-oxidative stability and the regular pore structure is prepared by a high-temperature calcination method, so that the application range of the traditional carbon-based materials in a high-temperature environment can be further expanded.
Owner:UNIV OF SCI & TECH OF CHINA
Asymmetric composite film based on ordered mesoporous carbon, super-assembly preparation method and application thereof
InactiveCN111729517AReduce evaporationRegular mesoporous structureSemi-permeable membranesKinetic-electric generatorCarbon filmComposite film
The invention belongs to the technical field of porous materials and specifically relates to an asymmetric composite film based on ordered mesoporous carbon, a super-assembly preparation method and application thereof. The preparation method comprises the following steps of: preparing a mesoporous carbon precursor solution from a template agent and resol; using an anodic aluminum oxide film with blocked holes as a substrate; then spin-coating the prepared mesoporous carbon precursor solution on the anodic aluminum film with the blocked holes to coat a mesoporous carbon film on the anodic aluminum oxide film to obtain a composite film with a two-layer structure, and growing the mesoporous carbon film on the surface of an AAO substrate by using an interface super-assembly method through evaporation induced self-assembly (EISA), thermal polymerization and calcination in an inert atmosphere to obtain the asymmetric composite film based on ordered mesoporous carbon. The composite film has aregular channel structure, provides rich channels for ion transport, has good cation selectivity and permeability, and can capture osmotic energy and convert the osmotic energy into electric energy.The method is simple, raw materials are easily available, and the method is suitable for large-scale production.
Owner:FUDAN UNIV
Preparation method of secondary battery electrode active material and secondary battery containing material
ActiveCN109817980AIncrease layer spacingImprove conductivityCell electrodesSecondary cellsElectrical batteryEngineering
The invention discloses a preparation method of a secondary battery electrode active material and a secondary battery containing the material. The secondary battery containing the electrode active material comprises a negative current collector (1), a negative electrode active material (2), electrolyte (3), a diaphragm (4), a positive electrode active material (5), a positive electrode current collector (6) and a battery shell for packaging. The cost of raw materials for preparation of the electrode active material is low, raw materials are easy to prepare, the process is simple, the production period is short, the prepared electrode active material can be used as a positive electrode material of a battery and a negative electrode material of the battery, is an MOFs material with large pibond and double metals, the material has a large interlayer spacing, provides a large channel, and is beneficial to embedding and de-embedding of ions, and the electrical conductivity of the materialis obviously improved.
Owner:合肥华思系统有限公司
Preparation method of 2-methoxy-4-methylphenol based on selective hydrodeoxygenation of vanillin
PendingCN114573429APore size is easy to adjustImprove conductivityOrganic chemistryOrganic compound preparationIridiumPtru catalyst
The invention discloses a 2-methoxy-4-methylphenol preparation method based on vanillin selective hydrodeoxygenation, which comprises the following steps: adding a reactant vanillin into a reaction kettle containing a certain amount of solvent, and carrying out hydrodeoxygenation reaction in the presence of a catalyst to obtain 2-methoxy-4-methylphenol, the catalyst is a porous carbon nanosphere loaded with a metal active component, the expression of the catalyst is M (at) CNS, M is any one of metal ruthenium, platinum, palladium, iridium, rhodium and gold, and CNS is a porous carbon nanosphere carrier. The porous carbon nanosphere not only has the characteristics of large specific surface area, abundant shell pore channels and easy regulation and control of pore diameter, but also has high dispersity and uniform size of loaded metal nanoparticles. The catalyst can realize high-efficiency and high-selectivity hydrodeoxygenation of vanillin under mild conditions to prepare 2-methoxy-4-methylphenol.
Owner:SHAANXI UNIV OF SCI & TECH
Preparation method of sphere-like porous silicon dioxide powder
ActiveCN113184863ARich outer surfaceRegular channel structureSilicaMolecular-sieve silica-polymorphsMuffle furnacePorous silicon
The invention discloses a preparation method of sphere-like porous silicon dioxide powder, and belongs to the field of porous materials. The method comprises the following steps: (1) mixing raw materials (the ratio of water to ethanol to a template agent to sodium hydroxide to a silicon source is (14.5-17.4): (3.5-4.2): (1.2-1.5): (0.005-0.012): 1; (2) carrying out aging or reflux treatment for 12-360 hours at the temperature of 75-95 DEG C, crystallizing for 0-360 hours at the temperature of 75-85 DEG C, filtering, and washing with deionized water; and (3) transferring into a muffle furnace for roasting, heating to 400-550 DEG C at a heating rate of 0.1-3 DEG C / min, and preserving heat for 3-6 hours to obtain a target powder material. The preparation method has the characteristics of cheap and easily available raw materials, simple preparation process, no use of a high-temperature and high-pressure device, easy control of preparation conditions, less emission in the preparation process and the like, and the obtained porous adsorption material has better adsorption performance.
Owner:BEIJING UNIV OF TECH +1
Lithium battery negative electrode material, and preparation method of lithium battery applying lithium battery negative electrode material
PendingCN113991057AAvoid LithiumImprove conductivityNegative electrodesSecondary cellsPhysical chemistryCharge and discharge
The invention discloses a lithium battery negative electrode material, and a preparation method of a lithium battery applying the lithium battery negative electrode material. The preparation method comprises the following steps: firstly, activating a carbon-based material, then preparing an MOF@C composite material from the carbon-based material, a transition metal ion salt and a polydentate organic ligand by using a hydrothermal method, then proportioning the MOF@C composite material and a binder into negative electrode slurry with different binder contents, carrying out multilayer coating according to a sequence that the concentration of the binder is gradually reduced from the inner layer to the outer layer by adopting a slit type extrusion coating method so as to prepare a negative electrode piece, and finally assembling the negative electrode piece into the corresponding lithium battery. According to the prepared MOF@C composite material, the electrical conductivity is improved while the advantages of MOF are reserved, and active sites in the charging and discharging process are increased; and the multilayer coating mode is adopted to compensate for the influence caused by migration of the binder to the surface in the drying process, the peeling strength of the negative electrode material on the foil is effectively improved, meanwhile, preparation of a thick electrode is facilitated, and then the negative electrode capacity is improved.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY
Denitration catalyst and preparation method thereof and flue gas denitration method
PendingCN113769786AHigh catalytic activityImprove catalytic selectivityGas treatmentOrganic-compounds/hydrides/coordination-complexes catalystsPtru catalystFlue gas
The invention relates to a denitration catalyst and a preparation method thereof and a flue gas denitration method. The preparation method of the denitration catalyst comprises the following steps: (1) preparing a UiO-66-NH2 solution by taking UiO-66-NH2 powder as a raw material; and (2) adding a vanadium-containing precursor solution into the UiO-66-NH2 solution to ensure that the molar ratio of vanadium in the vanadium-containing precursor to UiO-66-NH2 is (1-10):1, reacting for 12-48 hours under the water bath condition of 60-100 DEG C, and separating and drying the reacted solution to obtain the UiO-66-NH2-V catalyst. According to the UiO-66-NH2-V catalyst prepared by the preparation method disclosed by the invention, UiO-66-NH2 is used as a metal organic framework material, and the structure of the UiO-66-NH2-V catalyst is stable; vanadium sites in the catalyst are uniformly distributed, so that the catalytic activity of the catalyst is improved; and the UiO-66-NH2-V catalyst prepared by the method disclosed by the invention can be used for flue gas denitration, and still has relatively high catalytic activity at a low temperature.
Owner:CHINA BUILDING MATERIALS ACAD
Preparation method of secondary battery electrode active material and secondary battery containing the material
ActiveCN109817980BIncrease layer spacingImprove conductivityCell electrodesSecondary cellsElectrical batteryPhysical chemistry
The invention discloses a preparation method of an electrode active material for a secondary battery and a secondary battery containing the material. The electrode active material includes a negative electrode current collector (1), a negative electrode active material (2), an electrolyte (3), The separator (4), the positive electrode active material (5), the positive electrode current collector (6) and the battery case used for encapsulation, the electrode active material is prepared with low raw material cost, the raw material is easy to prepare, the process is simple, the production cycle is short, and the prepared electrode The active material can be used as the positive electrode material of the battery or as the negative electrode material of the battery. It is a MOFs material with large π bonds and bimetals. The material has a large interlayer spacing and provides a large channel, which is beneficial to The intercalation and deintercalation of ions significantly improve the electrical conductivity of the material.
Owner:合肥华思系统有限公司
Preparation method and application of heterogeneous catalyst for olefin oxidation carboxylation
ActiveCN113244954AUniform and fast loadingEasy to prepareOrganic chemistryOrganic-compounds/hydrides/coordination-complexes catalystsCarboxylationMolecular sieve
The invention provides a preparation method and application of a heterogeneous catalyst for olefin oxidation carboxylation, and relates to the technical field of heterogeneous catalysts for olefin oxidation carboxylation. According to the prepared catalyst, a mesoporous silica molecular sieve is used as a carrier, amino-functionalized imidazole ionic liquid is used as an active component, and the ionic liquid is quantitatively and uniformly loaded on the carrier mesoporous silica through mechanical ball milling under a solvent-free condition. The ionic liquid immobilized heterogeneous catalyst provided by the invention has the advantages of regular mesoporous structure, stable physical and chemical properties, good catalytic activity on olefin oxidation carboxylation reaction (the yield of cyclic carbonate synthesized by olefin oxidation and CO2 cascade reaction can reach 85%), recyclability and the like, and is suitable for catalyzing the reaction of CO2 and olefin to prepare cyclic carbonate by a one-step method.
Owner:GUIZHOU UNIV
A kind of electrochemical synthesis catalyst cu 3 (btc) 2 method and its nh 3 ‑scr application
InactiveCN104801341BUniform crystal formFlexible approachOrganic-compounds/hydrides/coordination-complexes catalystsDispersed particle separationEthylenediamineElectrolysis
Owner:DALIAN UNIV OF TECH
Cholesterol derivatives and o/w/o heterogeneous gel emulsions prepared therefrom and methods for preparing porous silica blocks using the emulsions
The invention discloses a cholesterol derivative, an O / W / O multi-phase gel emulsion prepared from the cholesterol derivative, and a method for preparing a porous silicon dioxide bulk material from the emulsion. The structural formula of the cholesterol derivative is as shown in the description, wherein n is an integer of 6 to 12, and R represents a C1-C4 alkyl group. The O / W / O multi-phase gel emulsion is prepared according to a one-step method by taking the cholesterol derivative as a sing surfactant and taking a silanization reagent as an oil-phase material, and is high in stability, stable to acid and alkali, uniform in droplet distribution, and high in water-phase content which is 80 to 97 percent of the total volume. The porous silicon dioxide bulk material is prepared by taking the O / W / O multi-phase gel emulsion as a template at an ammonia gas atmosphere. The method is simple and low in cost; the prepared silicon dioxide bulk material is low in density, and has rich hierarchical porous structures which are regular and high in permeability; moreover, the porous silicon dioxide bulk material is large in surface area, high in heat stability, adjustable in hydrophilicity and hydrophobicity, and excellent in water or oil adsorption property.
Owner:SHAANXI NORMAL UNIV
Preparation method and denitrification application of a mesoscale-regulated multi-level core-shell structure bimetallic mof-74(co-cu)
ActiveCN112625256BSmall sizeUniform crystal formOrganic-compounds/hydrides/coordination-complexes catalystsDispersed particle separationPtru catalystNitrogen oxides
The invention provides a preparation method and denitrification application of mesoscale-controlled multi-level core-shell structure bimetallic MOF-74 (Co-Cu). The catalyst selects cobalt-containing long-chain organic molecular salts and organic ligands for high-efficiency coordination, and performs special surface treatment on them, and then undergoes crystal post-synthesis modification in a low-temperature steam environment to make Cu metal nanoparticles modified by surfactants Multi-level core-shell structure composites with different thicknesses are self-grown on the surface of the Co precursor, and the prepared catalyst has a large specific surface area, good dispersion, and high selectivity. The catalyst prepared by the invention has excellent low-temperature catalytic denitrification activity, and the conversion rate of nitrogen oxides in the operating window of 200-275°C reaches over 96%.
Owner:DALIAN UNIV OF TECH
A kind of graphene band-modified polymer-based foam material and its preparation method and application
ActiveCN105647159BRegular channel structureEasy to compressWater/sewage treatment by sorptionCarbon fibersCarbon nanofiber
The invention belongs to the technical field of functional composite materials, and provides a graphene ribbon modified polymer-based foam material and a preparation method and application thereof in order to solve the problems that a carbon tube and carbon nanofiber as hydrophobic materials are difficultly adsorbed onto the surface of polymeric foam and the adsorption capacity is high. The water contact angle of the graphene ribbon modified polymer-based foam material is more than or equal to 130 degrees, and the foam material is made of 85-99% by weight of foam and 1-15% by weight of grapheme ribbons. The prepared modified foam has the advantages of good hydrophobicity, high oil absorption rate, good compression-resilience mechanical performance, reuse and the like, the preparation method is simple, quick and easy to operate, and the raw materials are cheap and easy to obtain. The application prospects are great on sewage treatment, oil water separation and other aspects.
Owner:HANGZHOU NORMAL UNIVERSITY
A sarna that activates ptpro gene expression and its transporter
ActiveCN106929508BNo side effectsStrong specificityOrganic active ingredientsAntibody ingredientsCell membraneFunctional modification
The invention provides saRNA for activating PTPRO gene expression. The saRNA comprises a sequence which is complementary with a region from -3000 site to -200 site of a PTPRO gene promoter region. The saRNA disclosed by the invention can activate the PTPRO gene expression, through improving the expression or the activity of PTPRO genes namely drug sensitive genes, the drug sensitivity is improved, and the growth of tumor cells is restrained, so that the purpose of killing the tumor cells is realized, and tumors are treated. The invention further provides a transport carrier loaded with the saRNA. Functional modification is performed on the surface of the transport carrier through a modifier, and the transport carrier which can recognize the tumor cells and has good biocompatibility is constructed, so that the saRNA can safely and efficiently penetrate through cell membranes and / or cell nucleuses of the tumor cells.
Owner:张灏
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