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33results about How to "Controllable pore size distribution" patented technology
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A kind of synthetic method of mesoporous silica-alumina molecular sieve
ActiveCN102295297AControllable pore size distributionAvoid heavy useMolecular-sieve and base-exchange compoundsMolecular-sieve compoundsMolecular sieveHeat stability
The invention provides a method for synthesizing a mesoporous aluminosilicate molecular sieve. The method comprises the following steps: mixing silicon sources, aluminium sources, sugar template agents and water, adjusting the pH value of the mixture to 4-13 to prepare a precursor sol, then aging the precursor sol, filtering, washing and drying the precursor sol and roasting the precursor powder to obtain the mesoporous aluminosilicate molecular sieve. The method is simple in process, safe to operate and easy to realize industrial large-scale production. The prepared mesoporous aluminosilicate molecular sieve has the advantages of concentrated pore size distribution and good heat stability, has specific surface area of 300-950m<2> / g and can be used in the adsorption and catalysis processes.
Owner:CHINA PETROLEUM & CHEM CORP +1
Core-shell type catalyst for directional catalytic conversion of biomass synthesis gas, and preparation of core-shell type catalyst
PendingCN108906070AImprove conversion rateAvoid churnMolecular sieve catalystsHeterogenous catalyst chemical elementsCatalytic transformationFreeze-drying
The invention provides a core-shell structure catalyst for directional catalytic conversion of biomass synthesis gas, and also provides a preparation method and application of the core-shell structurecatalyst. The core-shell structure catalyst comprises a core layer and a shell layer, wherein the core layer is prepared from small-grain composite metal oxide, and the shell layer is prepared from porous solid acid; the small-grain composite metal oxide is a solid solution or mixture of two or more oxides of ZnO, ZrO2, Co3O4, Fe2O3, In2O3, Ga2O3, CuO, Mn2O3, NiO, Cr2O3, La2O3 and CeO2. The core-shell catalyst adopts the solid solution or mixture of the small-grain composite metal oxide having a synergistic effect on hydrogenation of CO and CO2 as the core layer, and uses the solid acid having a microporous, mesoporous or multi-stage pore structure as the shell layer. The catalyst is prepared into a core-shell structure by means of a freeze-drying method, so that not only is the problem of lower hydrogenation conversion rate of CO2 in the biomass synthesis gas at present solved, but the conversion rate of CO hydrogenation is also further improved.
Owner:QINGDAO UNIV
Thermoplastic polyimide microporous material and its preparation process
This invention is related to the manufacturing technologic field of a micropore polymeric material, esecilly related to a thermoplastic polyimide micropore material and its preparation technology. Its raw materials and their percentage contents are as belows: thermoplastic polyimid(TPI): 70%-95%; pore former: 5%-30%. The micropore material is prepared by sintering humid mixed powder of polyimide and solid pore former. Its technological process is simple and it costs little. Multi-stage thermostatic sintering makes the mixed powder decompose completely and blend well with the polyimide particles. This improves material's strength and the factor of porosity. Micropore material's property can be adjusted by controlling the contend of the pore former, so it is very easy to adjust the bore diameter and the factor of porosity.
Owner:NANJING UNIV OF TECH
Method for preparing porous ceramics from hollow ceramic ball
ActiveCN103496999AImprove mechanical propertiesControllable pore size distributionCeramicwarePore diameterGel casting
The invention discloses a method for preparing porous ceramics in the technical field of inorganic nonmetallic materials. The porous ceramics are prepared by taking the hollow ceramic ball as a pore forming agent and using a gel casting process. The method comprises the steps: firstly, presintering the hollow ceramic ball; then, preparing low-viscosity ceramic slurry and degassing; placing the presintered hollow ceramic ball into the prepared ceramic slurry; uniformly stirring the slurry and degassing again; then, adding tetramethylethylenediamine and an aqueous solution of ammonium persulfate; carrying out injection molding after uniformly stirring the mixture; next, placing a slurry injected mold into a drying oven to heat; demolding after the slurry is completely cured, and carrying out drying, glue ejection, sintering and other processes to finally prepare the novel porous ceramics. The porous ceramics prepared by the invention are favorable in mechanical property, controllable in pore diameter distribution and uniform in air hole distribution; in addition, the adverse effects of the traditional pore forming agent on a blank body during burning can be avoided, the shrinkage and deformation of various prepared porous ceramics can be effectively inhibited, and the comprehensive performances of the prepared porous ceramics can also be effectively controlled.
Owner:TSINGHUA UNIV +1
Method for preparing pore diameter controllable porous capillary core
InactiveCN102489706APorosity is easy to controlControllable pore size distributionCeramicwarePore diameterMaterials science
The invention relates to a method for preparing a pore diameter controllable porous capillary core. The method comprises the following steps of: uniformly mixing soluble salt powder which does not react with matrix powder in the matrix powder of capillary core sintering raw materials, and coldly molding the mixed powder into the capillary core with the needed shape; and performing pressureless sintering or pressure sintering on the molded raw materials under the protection of inert gases, and washing off the soluble salt to prepare the capillary core. The method has the advantages of simple preparation process, no need of a pore-forming agent and low cost, and the capillary core with high strength, controllable porosity and controllable pore size distribution is prepared.
Owner:SHANDONG UNIV
Preparation and application of boat-fruited sterculia seed residue based sulfur-doped porous carbon
ActiveCN109704307AEasy accessLow priceMaterial nanotechnologyOther chemical processesPorous carbonCombined method
The invention provides preparation and application of boat-fruited sterculia seed residue based sulfur-doped porous carbon. The preparation comprises the following steps: subjecting tea-made boat-fruited sterculia seed residues, which serve as a raw material, and a sulfur dopant to high-temperature carbonization in an inert atmosphere so as to obtain sulfur-doped carbon, and then, carrying out physical activating treatment, thereby obtaining the sulfur-doped porous carbon. According to the preparation and the application, the sulfur-doped porous carbon is prepared by adopting a high-temperature carbonization and physical activation combined method, the method is simple in operation, the process is easy to control, washing is not required after activation, the production cost is reduced, the carbon yield is relatively high, and the method is environmentally friendly; and the prepared sulfur-doped porous carbon is of a nanosheet structure, is controllable in specific surface area and pore size distribution, high in electric conductivity and adjustable in sulfur content and is particularly suitable for being applied to the fields of heavy-metal wastewater treatment, printing and dyeing wastewater adsorption, lithium-sulfur batteries, lithium-ion batteries, sodium-ion batteries, supercapacitors, catalyst loading and the like.
Owner:HENAN INST OF ENG
Method for preparing mesoporous carbon with controllable aperture distribution
InactiveCN102502588AControllable pore size distributionLow costCarbon preparation/purificationSucroseCarbonization
The invention discloses a method for preparing mesoporous carbon with controllable aperture distribution. The method comprises the following steps of: dispersing nano particles into a carbon precursor solution, and performing ball milling and mixing, wherein the mass ratio of the nano particles to the carbon precursor is (0.1-10): 1; controlling the consumption of the solution to keep the mixture pasty; removing the solvent, and then performing carbonization for 0.1 to 3 hours at the temperature of between 500 and 1,200 DEG C in an inert atmosphere; cleaning with acid or alkali liquor to remove a template agent; and drying the sample, and thus obtaining the mesoporous carbon with controllable aperture distribution. The carbon precursor solution comprises an ethanol solution of thermosetting phenol resin, a methylbenzene solution of asphalt, a dimethyl sulfoxide solution of polyacrylonitrile and an aqueous solution of sucrose; the mass ratio of the solution to the carbon precursor is 1:1-10:1; and the ball milling speed is 200 to 500 revolutions per minute, and the ball milling time is 0.5 to 5 hours. The preparation method is simple; the cost of the product is low; and the mesoporous carbon of which the aperture distribution is centralized in nano particle diameter, can be prepared by using a small amount of solvent.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Preparation method for ZnO/perfluoropolymer nanofiber photocatalytic membrane
InactiveCN105709832AEasy to useEasy to operateOrganic-compounds/hydrides/coordination-complexes catalystsFilament/thread formingEmulsionRoom temperature
The invention discloses a preparation method for a ZnO / perfluoropolymer nanofiber photocatalytic membrane. The method comprises the steps that A, a carrier solution and a perfluoropolymer aqueous dispersion emulsion are mixed to be uniform, zinc salt or nanometer zinc oxide is added, the mixture is defoamed after being mixed to be uniform, and a spinning solution is obtained; B, the spinning solution obtained in the step A is injected in an electrostatic spinning device, and a precursor nanofiber membrane is prepared after electrostatic spinning and vacuum drying; C, the precursor nanofiber membrane is sintered and then cooled to room temperature, and the ZnO / perfluoropolymer nanofiber photocatalytic membrane is obtained. The method is simple in process and high in controllability and reusability, and the prepared ZnO / perfluoropolymer nanofiber photocatalytic membrane is stable in photocatalytic performance and easy to recover after being used.
Owner:TIANJIN POLYTECHNIC UNIV
Preparation method of porous carbon electrode material for supercapacitor
ActiveCN109110758AEasy to getLow priceCarbon compoundsHybrid capacitor electrodesPorous carbonSteam activation
The invention provides a preparation method of a porous carbon electrode material for a supercapacitor. The method comprises the following steps of by taking asphalt as a main raw material, adding a pore-forming agent and a catalyst, and sequentially performing a mixing technology, an air oxidation stabilization technology, a carbonization technology and a water steam activation technology to obtain a high-specific surface area porous carbon material. Compared with the prior art, the preparation method has the beneficial effects that by taking coal asphalt as a raw material, the coal asphalt is liable to acquire and low in cost; and in addition, the disadvantages of high cost of an activator, corrosion on equipment, environmental pollution, residue of chemical medicines on products and thelike of the traditional technology of preparing the porous carbon material by using acid and alkali to perform activation. Therefore, the preparation method is economic, effective and environmentallyfriendly, is controllable in pore diameter distribution and high in specific surface area and is a preparation method relatively suitable for preparing an electrode material for the supercapacitor.
Owner:SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
Porous polyimide ink, preparation method thereof, and method for preparing porous polyimide through direct writing 3D printing
ActiveCN111154336AHigh viscosityIncrease elasticityAdditive manufacturing apparatusInksPolymer sciencePore distribution
The invention provides a porous polyimide ink, a preparation method thereof, and a method for preparing porous polyimide through direct writing 3D printing, and relates to the fields of 3D printing technologies and porous polymer material preparation. The porous polyimide ink comprises the following components: polyamic acid, an organic solvent and a pore-forming agent. The prepared porous polyimide ink is applied to direct writing 3D printing, an obtained printed product is excellent in formability and good in size stability, and porous polyimide obtained through thermal imidization and after-treatment is uniform in pore diameter, uniform in pore distribution and communicated in pore passage. The method for preparing the porous polyimide is combined with a 3D printing technology, the problems that pores of the porous polyimide prepared through a traditional sintering method are difficult to control, complex porous components are difficult to form and the like are solved, and the method is suitable for 3D printing and forming of porous oil-containing parts that work under extreme working conditions and special conditions.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Method for synthesizing mesoporous aluminosilicate molecular sieve
ActiveCN102295297BControllable pore size distributionAvoid heavy useMolecular-sieve and base-exchange compoundsMolecular-sieve compoundsMolecular sieveHeat stability
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for preparing porous nickel-based amorphous alloy material
The invention provides a method for preparing porous nickel-based amorphous alloy material. The method combines a chemical reduction method with an in-situ precipitation pore-forming agent generation method. The prepared alloy material is in porous structure, has the specific surface area of 300-700 m<2> / g and the pore volume of 0.5-1.5 cm<3> / g, and the prepared amorphous alloy consists of Ni and B or Ni, B and element M; and the element M is one or multiple elements of Cu, Mo, P and Co. The method comprises the following steps: (1) solution is prepared; (2) alloy and pore-forming agent precipitation are produced through in-situ generation; and (3) prickling pore-forming is carried out, and the porous nickel-based amorphous alloy material is finally obtained. The amorphous alloy material prepared by the method has the characteristics that the aperture ratio is controllable, the pore structure and pore distribution are uniform, and the specific surface area is large. According to the amorphous alloy material prepared by the method, the specific surface area can reach more than 650 m<2> / g, the pore volume can be more than 1 cm<3> / g, the pore diameter distribution is uniform (3-4 nm), and the pore diameter is controllable.
Owner:HEBEI UNIV OF TECH
Method for preparing catalyst, catalyst prepared by using method, and method for preparing glycerol monomethyl ether by using catalyst
ActiveCN108855162AImprove temperature resistanceWide temperature rangePhysical/chemical process catalystsEther preparation by compound dehydrationGlycerolSilicon oxide
The invention relates to a method for preparing a catalyst, the catalyst prepared by using the method, and a method for preparing glycerol monomethyl ether by using the catalyst. The method for preparing the catalyst comprises the following steps: (1) separately preparing an ethanol solution of tetraalkyl silicate and an aqueous solution of Cs salt; (2) mixing the two solutions, stirring and adjusting the pH value of the mixed solution to be alkaline, and aging; (3) spray-drying the aged material to obtain silica gel powder; (4) thoroughly mixing silica sol with the silica gel powder, extruding and molding, drying and calcining to obtain a silicon oxide carrier; (5) impregnating the silicon oxide carrier with the ethanol solution of the tetraalkyl silicate, and then treating with low pressure steam to obtain a catalyst carrier; (6) impregnating the catalyst carrier with an aqueous solution of phosphotungstic acid, drying and calcining to obtain the supported catalyst. The catalyst is good in temperature resistance, can effectively improve glycerol conversion rate and glycerol monomethyl ether selectivity, can continuously react, and is convenient to operate and high in stability.
Owner:BEIJING RISUN TECH CO LTD
Preparation method of magnetic mesoporous zirconium dioxide compound microsphere
InactiveCN103599736AAvoid Magnetic ResponsivenessAvoid destructionMicroballoon preparationMicrocapsule preparationMicrosphereFreeze-drying
The invention relates to a preparation method of a magnetic mesoporous zirconium dioxide compound microsphere. The preparation method comprises the steps of (1) preparing polyelectrolyte modified magnetic powder; (2) ultrasonically dispersing the polyelectrolyte modified magnetic powder and zircon salt into absolute ethyl alcohol, carrying out ultrasonic treatment to obtain a polyelectrolyte modified magnetic powder suspension liquid, then, adding a deionized water solution of ethanol and ammonium hydroxide, reacting, and then, separating by using a magnet to obtain a magnetic zirconium oxide compound microsphere with a core-shell structure; (3) ultrasonically dispersing the magnetic zirconium oxide compound microsphere into the deionized water solution of ethanol and ammonium hydroxide, carrying out hydrothermal reaction after ultrasonic treatment to obtain a product, separating the product by using the magnet, washing, and carrying out vacuum freeze drying to obtain the magnetic mesoporous zirconium dioxide compound microsphere. The preparation method provided by the invention is simple in operation, controllable in process and good in repeatability; the prepared magnetic mesoporous zirconium dioxide compound microsphere is uniform in size and pore diameter distribution, large in specific surface area, stable in physicochemical property, not easy to agglomerate and good in dispersibility, and can be applied to the fields such as environment control, proteomics and the like.
Owner:DONGHUA UNIV
Covalent organic polymer for methane adsorption and storage and preparation method thereof
ActiveCN106268689AGood hydrothermal stabilityGood chemical stabilityOther chemical processesDispersed particle separationNatural gas storageTetraphenylmethane
The invention discloses a preparation method of a covalent organic polymer for adsorbing and storing methane, and relates to the technical field of covalent organic polymer materials. The covalent organic polymer is prepared by taking tetrabromo-tetraphenylmethane and 1,3,5-tribromobenzene as monomers through a Yamamoto-type coupling reaction. The covalent organic polymer can be synthesized through different methods such as a solvothermal method, a microwave method and a high gravity method; the polymer prepared through the method has the great specific surface area and the rich hierarchical porous structure, the methane adsorption capacity of the polymer is far more than the America DOE standard, and the polymer can be widely applied to the industries of gas-fueled vehicles, natural gas separation, natural gas storage and transportation and the like.
Owner:BEIJING UNIV OF CHEM TECH
Sound absorbing material and loudspeaker using same
PendingCN113889062AImprove acoustic performanceLow densityMicrophonesLoudspeakersLow densityLoudspeaker
The invention provides a sound absorbing material. The sound absorbing material comprises a covalent organic framework material. The invention also provides a loudspeaker using the sound-absorbing material, the loudspeaker comprises a shell with an accommodating space and a loudspeaker monomer accommodated in the accommodating space, the loudspeaker monomer and the shell define a rear cavity, and the sound-absorbing material is filled in the rear cavity. The covalent organic framework material is applied to the sound-absorbing material, and the advantages of low density, large specific surface area, controllable pore size distribution, stable rigid topological structure, good modifiability and the like of the material are utilized, so that the covalent organic framework material is applied to the sound absorbing material provided by the invention, the acoustic performance of the sound absorbing material provided by the invention can be remarkably improved.
Owner:AAC MICROTECH CHANGZHOU +1
Preparation method of carbon nanosheet, positive electrode material and preparation method thereof
InactiveCN110931789ALarge specific surface areaRealize industrial productionSecondary cellsPositive electrodesOrganic solventElectrical battery
The invention belongs to the technical field of nanometer materials, and particularly relates to a preparation method of a carbon nanosheet, a positive electrode material and a preparation method of the positive electrode material. The preparation method of the carbon nanosheet comprises the following steps of providing an aluminum source and 4, 4 '-biphenyldicarboxylic acid; dissolving the aluminum source and 4, 4 '-biphenyldicarboxylic acid in an organic solvent for heating treatment, and then performing solid-liquid separation to obtain a self-assembled aluminum-based metal organic framework; and sequentially carrying out carbonization treatment and acid treatment on the aluminum-based metal organic framework, and then drying to obtain the carbon nanosheet. The preparation method is simple in process and low in cost, the finally obtained carbon nanosheet has a scaly surface structure, a hierarchical porous structure and an ultra-large specific surface area, the extra carbonaceous activation and template removal processes are not needed, and the carbon nanosheet can be compounded with selenium to serve as the positive electrode material of a lithium-selenium ion battery and has avery good application prospect.
Owner:SHENZHEN UNIV
In-situ synthesis method for regulating and controlling surface and interface pores and properties of carbon membrane
PendingCN114832637AImprove separationImprove pollution resistanceSemi-permeable membranesMembranesPre treatmentPolyvinyl alcohol
Owner:SHENYANG POLYTECHNIC UNIV
Process for extracting and purifying high-quality tea polyphenol by using spherical polyamide resin
ActiveCN111116680ARich pore sizeRich controllabilityOrganic chemistryPhenolic content in teaPolyamide
The invention discloses a process for extracting and purifying high-quality tea polyphenol by using spherical polyamide resin. The process comprises the following steps: extracting and filtering tea leaves, loading the filtered tea extract solution into a chromatographic column filled with spherical polyamide chromatographic resin for chromatography, eluting caffeine and a pigment by using a citric acid aqueous solution as an eluent, then eluting tea polyphenol by using ultrapure water and finally eluting tea polyphenol by using an ethanol aqueous solution as a mobile phase, and finally, concentrating and crystallizing the collected tea polyphenol eluent to obtain a colorless and transparent high-quality tea polyphenol crystal finished product. According to the process for extracting and purifying high-quality tea polyphenol by using spherical polyamide resin, the extraction method is simple, eco-friendly, free of pollution and low in production cost, the requirements that the purity of the tea polyphenol is larger than 99% and the extraction rate is larger than 90% can be met only through one-step chromatographic purification, the prepared tea polyphenol is high in yield, high inextraction rate and high in quality, the requirements of more fields can be met, and therefore wider market requirements are met.
Owner:海山都(上海)生物技术有限公司
A kind of porous polyimide ink and its preparation method and a method for preparing porous polyimide by direct writing 3D printing
ActiveCN111154336BHigh viscosityIncrease elasticityAdditive manufacturing apparatusInks3d printPolymer science
The invention provides a porous polyimide ink, a preparation method thereof, and a method for preparing porous polyimide by direct writing 3D printing, and relates to the fields of 3D printing technology and preparation of porous polymer materials. The composition of the porous polyimide ink provided by the invention includes polyamic acid, organic solvent and porogen. The porous polyimide ink prepared by the present invention is applied to direct writing 3D printing, and the printed product obtained has excellent formability and good dimensional stability, and the porous polyimide obtained by thermal imidization and post-treatment has uniform pore The distribution is even and the pores are connected to each other. The method for preparing porous polyimide provided by the present invention is combined with 3D printing technology, which solves the problems that the porous polyimide prepared by traditional sintering method is difficult to control the pores and complex porous components are difficult to form, and is suitable for extreme working conditions and special conditions. 3D printing of porous oil-containing parts that work under certain conditions.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation and application of a special porous composite electrode for lithium-sulfur batteries
The invention discloses the preparation of a porous composite electrode for a lithium-sulfur battery and its application in the lithium-sulfur battery. A copper compound is used as a raw material, and a precursor solution is obtained by dissolving it in a solvent; the obtained precursor solution is spread on a non-woven fabric. Or on the glass plate substrate to obtain a precursor solution layer; compared with the conventional lithium negative electrode applied to lithium-sulfur batteries, the porous lithium negative electrode does not need to prepare slurry during the electrode preparation process, no need to scrape or press, which greatly shortens the time. The process flow of electrode preparation is improved, and the utilization rate of materials is increased. The porous lithium negative electrode is prepared by suction filtration and deposition, without adding a binder, and the porous lithium negative electrode is a whole, and there is no contact resistance between powder material particles. , Porous lithium negative electrode shows excellent ability to conduct electrons. From the perspective of reaction mechanism, lithiophilic copper-based film, porous lithium negative electrode has unparalleled performance in electrode preparation process, raw material utilization, conductivity, electrode composition and other aspects. Advantages and good application prospects.
Owner:YANTAI UNIV
A kind of porous carbon material for lithium-sulfur battery and its preparation and application
ActiveCN106549159BAperture size adjustableControllable pore size distributionElectrode carriers/collectorsLi-accumulatorsPore distributionSulfur
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
A process for extracting and purifying tea polyphenols with spherical polyamide resin
ActiveCN111116680BRich pore sizeRich pore size distributionOrganic chemistryPolymer sciencePhenolic content in tea
Owner:海山都(上海)生物技术有限公司
Method for preparing pore diameter controllable porous capillary core
InactiveCN102489706BPorosity is easy to controlControllable pore size distributionCeramicwarePore diameterMaterials science
The invention relates to a method for preparing a pore diameter controllable porous capillary core. The method comprises the following steps of: uniformly mixing soluble salt powder which does not react with matrix powder in the matrix powder of capillary core sintering raw materials, and coldly molding the mixed powder into the capillary core with the needed shape; and performing pressureless sintering or pressure sintering on the molded raw materials under the protection of inert gases, and washing off the soluble salt to prepare the capillary core. The method has the advantages of simple preparation process, no need of a pore-forming agent and low cost, and the capillary core with high strength, controllable porosity and controllable pore size distribution is prepared.
Owner:SHANDONG UNIV
A kind of porous carbon film for lithium-sulfur battery and its application
ActiveCN105731416BIncrease profitImprove performanceCell electrodesCarbon preparation/purificationEtchingPorous carbon
The invention discloses a porous carbon membrane for lithium-sulfur batteries and its application in lithium-sulfur batteries. , or a mixture of organic polymer resin and powdered carbon material as raw materials to prepare an organic film or an organic-inorganic composite film, and a porous carbon film obtained by pre-oxidation, temperature-programmed carbonization, and etching template. As a cathode material for lithium-sulfur batteries, porous carbon membranes show unparalleled advantages in electrode preparation process, raw material utilization, conductivity, electrode composition, structure, and quality, and have good application prospects.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
A kind of preparation method of magnetic mesoporous zirconia composite microsphere
InactiveCN103599736BEasy to prepareGood repeatabilityMicroballoon preparationMicrocapsule preparationMicrosphereFreeze-drying
The invention relates to a preparation method of a magnetic mesoporous zirconium dioxide compound microsphere. The preparation method comprises the steps of (1) preparing polyelectrolyte modified magnetic powder; (2) ultrasonically dispersing the polyelectrolyte modified magnetic powder and zircon salt into absolute ethyl alcohol, carrying out ultrasonic treatment to obtain a polyelectrolyte modified magnetic powder suspension liquid, then, adding a deionized water solution of ethanol and ammonium hydroxide, reacting, and then, separating by using a magnet to obtain a magnetic zirconium oxide compound microsphere with a core-shell structure; (3) ultrasonically dispersing the magnetic zirconium oxide compound microsphere into the deionized water solution of ethanol and ammonium hydroxide, carrying out hydrothermal reaction after ultrasonic treatment to obtain a product, separating the product by using the magnet, washing, and carrying out vacuum freeze drying to obtain the magnetic mesoporous zirconium dioxide compound microsphere. The preparation method provided by the invention is simple in operation, controllable in process and good in repeatability; the prepared magnetic mesoporous zirconium dioxide compound microsphere is uniform in size and pore diameter distribution, large in specific surface area, stable in physicochemical property, not easy to agglomerate and good in dispersibility, and can be applied to the fields such as environment control, proteomics and the like.
Owner:DONGHUA UNIV
A kind of covalent organic polymer for methane adsorption storage and preparation method thereof
ActiveCN106268689BGood hydrothermal stabilityGood chemical stabilityOther chemical processesDispersed particle separationMicrowave methodPolymer science
The invention discloses a preparation method of a covalent organic polymer for adsorbing and storing methane, and relates to the technical field of covalent organic polymer materials. The covalent organic polymer is prepared by taking tetrabromo-tetraphenylmethane and 1,3,5-tribromobenzene as monomers through a Yamamoto-type coupling reaction. The covalent organic polymer can be synthesized through different methods such as a solvothermal method, a microwave method and a high gravity method; the polymer prepared through the method has the great specific surface area and the rich hierarchical porous structure, the methane adsorption capacity of the polymer is far more than the America DOE standard, and the polymer can be widely applied to the industries of gas-fueled vehicles, natural gas separation, natural gas storage and transportation and the like.
Owner:BEIJING UNIV OF CHEM TECH
Preparation method of graphene oxide-loaded asphalt-based activated carbon composite material
ActiveCN112973626ALarge specific surface areaUniform pore size distributionOther chemical processesCoking carbonaceous materialsActivated carbonOxide composite
The invention discloses a preparation method of a graphene oxide-loaded asphalt-based activated carbon composite material, which comprises the following steps: shearing or grinding asphalt particles, adding an emulsifier, and uniformly dispersing in water to prepare emulsified asphalt; dissolving KOH in distilled water, and adding graphene oxide and a dispersing agent to prepare a graphene oxide stable dispersion liquid containing an activating agent; mixing the emulsified asphalt and the graphene oxide stable dispersion liquid, adding a coupling agent, heating, and evaporating to obtain a KOH / GO / emulsified asphalt mixture; carrying out carbonization treatment on the KOH / GO / emulsified asphalt mixture; and washing and drying the graphene oxide-loaded asphalt-based activated carbon obtained by carbonization. According to the method, the activated carbon-graphene oxide composite material with controllable pore diameter and adjustable heat conduction is realized, so that the technical bottlenecks of an adsorption / desorption process with low heat conductivity coefficient, high desorption and regeneration difficulty, low efficiency, high energy consumption and short service life of activated carbon are broken through.
Owner:CHANGZHOU UNIV
Method for preparing porous nickel-based amorphous alloy material
Owner:HEBEI UNIV OF TECH
A method for preparing electrode materials for supercapacitors using current collectors as templates
ActiveCN111540621BParticle size controllableReduced Diffusion ResistanceHybrid capacitor electrodesHybrid/EDL manufacturePorous carbonSupercapacitor
The invention discloses a method for preparing an electrode material for a supercapacitor using a current collector as a template. The electrode material is prepared by depositing a carbon material in situ by using a metal foam current collector as a template. First, the metal oxide is uniformly dispersed on the surface of the current collector by spray drying method. The selected current collector is metal foam, which itself has a large porous structure. During the activation process, the metal oxide undergoes redox reaction with the deposited carbon material at high temperature. , and further form pores on the surface of the carbon material, and the water vapor is further activated along the pores to form a large number of micropores, thereby obtaining a porous carbon material for supercapacitors. The present invention uses the current collector of metal foam as a template and deposits carbon on it. The carbon electrode material will have a three-dimensional porous structure with many large pores. Microporous channels are introduced into the carbon material with porous structure, so that the specific surface area and electrical conductivity of the electrode material are effectively improved.
Owner:SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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