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67results about How to "Has a mesoporous structure" patented technology
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Biological activity glass mesoporous microsphere and preparation method thereof
InactiveCN101314039AHas a mesoporous structureSmall and uniform particle sizeInorganic non-active ingredientsChemistryMixed solution
The invention discloses a biological activity glass meso-porous microsphere and a preparation method thereof. The biological activity glass meso-porous microsphere comprises the following chemical compositions in percentage by weight: 16 to 36 percent of CaO, 4 percent of P2O5 and 60 to 80 percent of SiO; the average grain diameter is between 2 and 5 mu m; the grains are sphere -shaped; the specific surface area of the grains is between 30.6m<2> / g and 89.7m<2> / g; and the meso-porous diameter is between 1.9 and 4.1nm. The method adopts the organic template method, comprising the following the steps that: a catalysts is added in deionized water, the mixed solution is added with tetraethoxysilane, triethyl phosphate and calcium nitrate tetrahydrate for hydrolysis reaction, the mixed solution is added with organic template polyethylene glycol and fully stirred to obtain sol, the sols is subject to aging to form wet gel, the wet gel is immersed in and washed by absolute ethyl alcohol and dried to obtain dry gel, and the dry gel is put in a crucible for heat treatment to obtain the finished products. The biological activity glass meso-porous microsphere has the advantages of higher biological activity and degradation property and good biological compatibility.
Owner:SOUTH CHINA UNIV OF TECH
Method for preparing single dispersing ball-shape mesoporous titanium dioxide colloid particles whose size and apparance are controllable
InactiveCN101070184AReduce energy consumptionHigh purityTitanium dioxidePigment treatment with macromolecular organic compoundsMicrosphereRoom temperature
The invention belongs to the field of preparing material of nanometer and sub-micron of inorganic semiconductor, it is especially relates to the preparation method of colloid granule of TiO2 whose size is between dozens of nanometers and dozens of sub-microns, whose pattern can be controlled, which is monodisperse and has spherical mesoporous. At room temperature, wrap up and cover a layer of TiO2 on surface of polymeric microballoon sphere (PSMMA) and then swell and infiltrate it through the mixed solution of toluene or tetrahydrofuran and ethanol, make colloid granule of TiO2 which is monodisperse and which has spherical mesoporous after getting even complex granule. The preparation method of this invention is simple, the colloid granule of TiO2 has high purity and good dispersibility, diameter of the granule is between 20-2000 nanometer, specific area is between 50-1000m2 / g, the size of the granule distributes narrowly and the warp is smaller than 10%, and the size of granule can be controlled through the covering thickness of TiO2 and size of granule of PSMMA .
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Method for preparing acidification stripped vermiculite supported TiO2 photocatalyst
InactiveCN102658106ARich reservesEasy to obtainPhysical/chemical process catalystsWater/sewage treatment by irradiationNanoparticleWastewater
The invention relates to a method for preparing an acidification stripped vermiculite supported TiO2 photocatalyst. Cheap acidification stripped vermiculite lamina are used as a support, and a TiO2 photocatalyst is supported on the laminar surface of the acidification stripped vermiculite, so that the organic pollutants are treated by integrated adsorption-photocatalysis, and the catalyst is easy to separate and recycle. The simple acid treatment is utilized to obtain the large-specific-area acidification stripped vermiculite lamina containing rich hydroxyl groups on the surface; and the acidification stripped vermiculite supported TiO2 photocatalyst is synthesized by a simple hydrothermal method by using the acidification stripped vermiculite as the support of the TiO2 nano photocatalyst. The method is simple and low in cost; the obtained supported TiO2 photocatalyst is a TiO2 nanoparticle lamina of which the acidification stripped vermiculite laminar surface grows uniformly and orderly and forms a flat porous sponge; and the supported TiO2 photocatalyst has large specific area and high photocatalytic activity, is convenient for treating organic pollutants by integrated adsorption-photocatalysis, is easy to separate and recycle, and can be widely used for environmental treatment, such as purifying treatment of wastewater, sewage, indoor / outdoor gas contamination and the like.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Synthetic method of graphite-like carbon nitride/molybdenum disulfide nanocomposite material
ActiveCN107376971AWidely used valueHigh purityPhysical/chemical process catalystsWater/sewage treatment by irradiationWater bathsThermal insulation
The invention relates to a synthetic method of a graphite-like carbon nitride / molybdenum disulfide (g-C3N4 / MoS2) nanocomposite material. The synthetic method comprises the following steps: firstly, weighing a certain amount of urea and then putting the urea into a corundum crucible; secondly, putting the corundum crucible holding the urea into a muffle furnace and then calcining at a certain temperature to obtain the g-C3N4; thirdly, weighing a certain amount of ammonium molybdate ((NH4)6Mo7O24.4H2O) and thioacetamide (CH3CSNH2)) and respectively dissolving the two substances in deionized water to obtain uniform solutions; fourthly, slowly dropwise adding the ammonium molybdate solution into the thioacetamide solution; fifthly, stirring, then transferring the mixed solution into a reaction still, carrying out thermal insulation under the hydrothermal condition that the temperature is 195 DEG C for 30 hours to obtain MoS2 nanopowder, and then carrying out separation, washing and drying; sixthly, taking a certain amount of the g-C3N4 and a certain amount of the MoS2, and then dissolving the substances in absolute ethyl alcohol, carrying out constant temperature ultrasonic operation for 2 hours and then drying in a water bath kettle with the temperature of 40 DEG C to obtain a finished product. The graphite-like carbon nitride / molybdenum disulfide (g-C3N4 / MoS2) nanocomposite material disclosed by the invention has the advantages of simple synthetic technology, large specific surface area (65 to 75m<2> / g) and excellent visible light photocatalytic performance.
Owner:LUOYANG INST OF SCI & TECH
Catalyst for synthesizing benzaldehyde by carrying out liquid-phase high-selectivity catalytic oxidation on methylbenzene
InactiveCN103285865AHigh selectivityHigh yieldOrganic compound preparationCarbonyl compound preparationAlkaline earth metalBenzaldehyde
The invention discloses a novel catalyst for carrying out liquid-phase high-selectivity catalytic oxidation on methylbenzene. The catalyst mainly takes an alkaline-earth metal composite oxide with high temperature stability as a carrier and metals (V, Cr, Mn, Fe, Co, Ni, Cu, Au, Pd and Pt) with high activity as catalytic oxidation active centers. The prepared catalyst shows high selectivity and activity in liquid-phase oxidation of methylbenzene. Under the conditions that the reaction temperature is 90-160 DEG C, the reaction time is 2-48 hours and the pressure of air or oxygen is 0.5-2.0MPa, the highest selectivity of benzaldehyde can be 94.0% and the highest conversion rate of methylbenzene also reaches 45.0%. Compared with the reported results, the prepared catalyst has the advantages that the catalyst still has good mesoporous structure under high temperature; in the catalysis process, the conversion rate of methylbenzene and the yield of benzaldehyde are high; and meanwhile, any solvent or organic additive is not added to a reaction system and the catalyst has the advantages of high yield, low cost, no environmental pollution, easy separation, good repeatability and the like.
Owner:NANJING INST OF TECH
Spinel type mesoporous high-entropy oxide nanosphere with hollow structure, preparation method and application thereof
ActiveCN111333124ACost controlGreat application valueOther chemical processesNickel compoundsAir atmosphereOxide
The invention discloses a spinel type mesoporous high-entropy oxide (NiCoCrFeMn)3O4 nanosphere with a hollow structure, a preparation method and application thereof, and belongs to the technical fieldof advanced nano materials. The preparation method comprises: carrying out a covalent cross-linking reaction on formaldehyde and tannic acid in weakly alkaline water / alcohol mixed solvent by using pluronic F127 to control morphology, using the tannic acid as an organic ligand and using the formaldehyde as a cross-linking agent to prepare a tannic acid-formaldehyde oligomer; then carrying out a hydrothermal reaction on a metal precursor containing equimolar Ni<2+>, Co<2+>, Cr<3+>, Fe<2+> and Mn<2+> and the prepared tannic acid-formaldehyde oligomer to obtain nickel (II)-cobalt (II)-chromium (III)-iron (II)-manganese (II)-tannic acid-formaldehyde polymer nanospheres; and roasting in an air atmosphere to obtain the spinel type mesoporous high-entropy oxide (NiCoCrFeMn)3O4 nanosphere with thehollow structure. The prepared mesoporous high-entropy oxide (NiCoCrFeMn)3O4 nanosphere has a hollow structure, a high specific surface area, a large pore volume and superparamagnetism, so that the mesoporous high-entropy oxide (NiCoCrFeMn)3O4 nanosphere can be applied to the aspects of catalysis, separation, electrode materials and the like.
Owner:XI AN JIAOTONG UNIV
Preparation method of hollow mesoporous silica nano microspheres
ActiveCN111232994AGood dispersionLarge specific surface areaMaterial nanotechnologySilicaFoaming agentMicrosphere
The invention relates to a preparation method of hollow mesoporous silica nano microspheres, which comprises the following steps: by using polystyrene microspheres (PS microspheres) with positive cations on the surfaces as a template and tetraethoxysilane (TEOs) as a silicon source, reacting in an alkaline environment to obtain silica-coated polystyrene microspheres (PS@SiO2); and calcining the obtained PS@SiO2 nano-microsphere to obtain the hollow silicon dioxide nano-microsphere with the mesoporous structure. According to the preparation method disclosed by the invention, the hollow mesoporous silicon dioxide spheres with the shell thickness of 8-40 nm can be obtained by only adjusting the addition amount of tetraethoxysilane (TEOs) without adding a surfactant and other pore-foaming agents. The method has the advantages of simple preparation method, good reproducibility (repeated experiments for at least 50 times), low cost (low drug price) and the like. The obtained hollow mesoporous silica nanospheres have the characteristics of good dispersibility, large specific surface area, small shell thickness, uniform size and the like.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Porous graphene and preparation method thereof
ActiveCN103395779ALarge specific surface areaHas a mesoporous structureGraphenePorous grapheneSulfur
The invention provides a porous graphene and a preparation method thereof. The preparation method comprises the following steps: under the action of an oxidant, heating a graphite substance and sulfur in a solvent to react, thereby obtaining the porous graphene, wherein the graphite substance is one or more of graphene oxide, graphene and graphite microsheets. The porous graphene provided by the invention has a mesopore structure, and thus, has higher specific area. When the porous graphene provided by the invention is used in a supercapacitor electrode material, the supercapacitor has favorable high-power charging / discharging property.
Owner:NINGBO GRAPHENE INNOVATION CENT CO LTD
Method for preparing visible-light response photocatalyst by utilizing nano Zn2SnO4
ActiveCN106512978AHigh purityEasy to operateWater/sewage treatment by irradiationWater contaminantsAbsorption capacityNanostructure
The invention discloses a method for preparing a visible-light response photocatalyst by utilizing nano Zn2SnO4. The method comprises a step of preparing a solvent thermal product, a step of preparing Zn2SnO4 nano powder, a step of preparing a turbid liquid, a step of preparing a hydrothermal reaction product and a step of preparing the visible-light response photocatalyst. According to the method disclosed by the invention, a synthesis process is simple and convenient, impurities introduced by follow-up processes such as high-temperature calcining and ball-milling and structure defects are avoided, operations are easy, and purity of products synthesized by reaction is high. The visible-light response photocatalyst synthesized by the method is a nano structure, is small in crystalline grain, and has a mesoporous structure and a relatively great surface area, so that light absorption capacity of the visible-light response photocatalyst is strengthened; and meanwhile, a migration distance of light-generated electrons is shortened, and recombination probability of light-generated electrons and electron-hole pairs is reduced.
Owner:LUOYANG INST OF SCI & TECH
Method for synthesizing nanometer zinc-doped tin oxide/zinc stannate heterojunction
InactiveCN102527370ALow costHigh purityWater/sewage treatment by irradiationMetal/metal-oxides/metal-hydroxide catalystsHeterojunctionUltraviolet lights
The invention relates to a method for thermally synthesizing a nanometer zinc-doped tin oxide / zinc stannate heterojunction by utilizing a solvent. The method comprises the following steps: 1) selecting a certain amount of tin oxide, zinc nitrate and sodium hydroxide, and respectively dissolving in a mixed solvent of water and absolute ethyl alcohol, thereby obtaining a uniform solution; 2) dropwise adding a NaOH solution into a mixed solution of SnC14 and Zn(NO3)2, stirring, and then placing into a reaction kettle, keeping the temperature at 180 DEG C for 15 hours, and separating, washing anddrying the obtained Zn-SnO2; 3) weighting a certain amount of Zn-SnO2, SnC14, Zn(NO3)2 and NaOH, adding into the mixed solvent of water and absolute ethyl alcohol, and continuously and fully stirring; 4) dropwise adding the NaOH solution into a mixed solution of SnC14, Zn(NO3)2 and Zn-SnO2, fully stirring, and then placing into a hydro-thermal reaction kettle, and keeping the temperature at 200 DEG C for 20 hours; and 5) separating, washing and drying, thereby obtaining an end product. The synthesizing technology of the product is simple; the product is 20-30nm spherical grains; the product has the characteristics of a mesoporous structure and has a bigger specific surface area; and the product has an excellent photocatalytic property under an ultraviolet light condition.
Owner:LUOYANG INST OF SCI & TECH
Mesoporous Ag/Ag2O/TiO2 solid microsphere material preparation method
ActiveCN107486202AGood repeatabilityLarge specific surface areaMetal/metal-oxides/metal-hydroxide catalystsSolventAir atmosphere
The invention relates to a mesoporous Ag / Ag2O / TiO2 solid microsphere material preparation method, which specifically comprises: dissolving a silver-containing compound, a titanium-containing compound and a surfactant in a solvent, completely stirring, dissolving, carrying out standing settling, carrying out a hydrothermal reaction, washing the obtained product, drying, and calcining in an air atmosphere to obtain the mesoporous Ag / Ag2O / TiO2 solid microsphere material. According to the present invention, the prepared mesoporous Ag / Ag2O / TiO2 microsphere solid material has good repeatability; the morphology of the product is gradually away from the spherical shape along with the increase of the Ag-to-Ti ratio while the mesoporous structure is remained basically; and the final sample has a large specific surface area and more active sites so as to provide a certain promotion effect for the catalytic reaction.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Ceramic filter element added with carbon nano tube and preparation method thereof
InactiveCN103833411AImprove mechanical propertiesEfficient Adsorption RemovalCeramicwareClaywaresFiltrationCarbon nanotube
The invention discloses a ceramic filter element added with carbon nano tubes. The ceramic filter element added with the carbon nano tubes is characterized by being prepared from the following raw materials in parts by weight: 15-17 parts of activated carbon, 10-13 parts of diatomite, 6-9 parts of cordierite, 2-3 parts of carbon nano tube, 3-5 parts of smashed cotton exocarp, 6-8 parts of smashed coconut shell, 7-9 parts of mica powder, 5-8 parts of clay, 8-10 parts of aluminium powder, 4-6 parts of zeolite, 1-2 parts of chitosan, 5-7 parts of modified coconut shell activated carbon and a defined amount of water. The ceramic filter element added with the carbon nano tubes is added with chitosan, so that the ceramic filter element added with the carbon nano tubes has good clarification and flocculation effects; the carbon nano tubes are added, so that the mechanical properties of the ceramic filter element can be improved; a mesoporous structure is formed, so that heavy metal ions in water can be effectively adsorbed and removed; modified coconut shell activated carbon is added, so that interspace is developed, the adsorption property is good, the strength is high, and the ceramic filter element added with the carbon nano tubes can be regenerated easily and is economical and durable; the purification efficiency is high, the service life is long, and the corrosion resistance is high, so that the ceramic filter element added with the carbon nano tubes can be used for air adsorption filtration or inspiration filtration by virtue of a car filter cleaner.
Owner:WUHU BAOYI AMUSEMENT EQUIP
Quantative production method for SiO2-based biological active tissue repair material
ActiveCN108892145AEasy to prepare in large batchesEasy to synthesizeMaterial nanotechnologyPhosphorus oxidesPorosityTissue repair
The invention provides a quantative production method for a SiO2-based biological active tissue repair material. The method comprises the following steps: mixing water and a catalyst; adding a siliconsource precursor by a liquid charging device; adding a phosphorus source precursor by using the liquid charging device; adding a calcium source precursor by using a solid charging device; adding an inorganic salt substance containing rare earth metals by using the solid charging device; forming a wet gel and carrying out room temperature ageing; then carrying out high-temperature ageing; forminga dry gel to grind in a wet manner; and drying and screening the dry gel to finally obtain the SiO2-based biological active tissue repair material which nano porosity and high specific surface area. The preparation method is simple in step, easy to control flow, low in price of materials, needed equipment is common equipment, the single output can reach kg level, and problems of unstable batches and poor repeatability in a process of preparing powder are solved effectively.
Owner:佛山今兰生物科技有限公司
Preparation method of anti-water-type low-temperature NH3-SCR catalyst, catalyst prepared therewith and application of the catalyst
ActiveCN105032402ARaw materials are cheap and easy to getEasy to prepareDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsDisiloxaneAir atmosphere
A preparation method of an anti-water-type low-temperature NH3-SCR catalyst, the catalyst prepared therewith and an application of the catalyst. The anti-water-type low-temperature NH3-SCR catalyst is a mesoporous Mn<0.2>Ti<0.8-x>Si<x>O<2> composite oxide catalyst. The preparation method includes following steps: (1) dissolving 0.98 g of manganese acetate and 5 ml of tetrabutyl titanate in 20 ml of an ethanol solution; (2) adding 1 ml of acetic acid and 1 ml of water to promote hydrolysis; (3) intensively stirring the mixture uniformly and filling a hydrothermal reaction kettle with the mixture as a reactant; (4) performing a reaction at 180 DEG C for 24 h; (5) performing centrifugation, washing and drying to a product to obtain nano particles of a Mn0.2Ti0.8O2 composite oxide; (6) dispersing the composite oxide in cyclohexane, adding 0.5-5 ml of hexamethyl disiloxane, stirring the mixture for 24 h and washing and drying the mixture; and (7) finally roasting the product at 550 DEG C in air for 4 h to obtain the mesoporous Mn<0.2>Ti<0.8-x>Si<x>O<2> composite oxide catalyst. The preparation method is low in raw material cost and allows the raw material to be obtained easily, is simple in processes and devices and is environment-friendly. The catalyst has a mesoporous structure and is high in pore volume. Compared with a catalyst without pore structure regulation, the catalyst in the invention is better in NH3-SCR anti-water performance.
Owner:NANJING UNIV
Ordered mesoporous carbon-zirconium dioxide composite and preparation method thereof
InactiveCN103030134ALarge hole volumeUniform pore size distributionMaterial nanotechnologyCarbon preparation/purificationIn situ crystallizationCo assembly
The invention belongs to the technical field of mesoporous material preparation, and particularly relates to a solid carbon-zirconium dioxide nano composite in an ordered mesoporous structure, and a synthetic method of the composite. The composite is large in specific surface area (300-594m<2> / g) and pore volume (0.20-0.48cm<3> / g), and uniform in aperture (2.5-3.2nm). The synthetic method of the composite comprises the steps of taking zirconium tetrachloride as an inorganic precursor, A-stage phenolic resin as a polymeric source and F127 as a surfactant, and synthesizing the ordered mesoporous carbon-zirconium dioxide nano composite by integrating a ternary co-assembly method and an in-situ crystallization technology. The synthetic method is simple to operate and low in cost, and the prepared composite has immeasurable potential application prospects in many aspects.
Owner:SHANGHAI NORMAL UNIVERSITY
Carbon and ferroferric oxide mesoporous compound material, preparation thereof and application thereof in environmental sewage treatment
InactiveCN102225329AHas a mesoporous structureSimple processOther chemical processesAlkali metal oxides/hydroxidesEthylic acidSodium hydroxide
The invention discloses a carbon and ferroferric oxide mesoporous compound material, a preparation thereof and an application thereof in environmental sewage treatment. The carbon and ferroferric oxide mesoporous compound material is acquired by taking chitosan as a carbon source, taking ferric nitrate nonahydrate, ethylic acid and sodium hydroxide as raw materials, and performing a micro-channelauxiliary method at room temperature. The carbon and ferroferric oxide mesoporous compound material prepared by using the method has a mesoporous structure and has a bigger specific surface area. In the material, the mass ratio of carbon to ferroferric oxide is 2:1. Because the material is magnetic, the material can be conveniently and quickly separated under the action of an external magnetic field. The prepared carbon and ferroferric oxide mesoporous compound material can absorb the heavy metal lead ions from the sewage within a short period of time, without generating pollutants similar toflocculating agents. The carbon and ferroferric oxide mesoporous compound material is simple in process, is low in cost, is environmentally-friendly and meets the actual production requirement.
Owner:HUAZHONG NORMAL UNIV
Preparation method of hierarchical pore TS-1 molecular sieve
ActiveCN111186842AHas a mesoporous structureNarrow pore size distributionMolecular sieve catalystsMolecular-sieve metallophosphatesMolecular sieveHydrolysis
The invention discloses a preparation method of a hierarchical pore TS-1 molecular sieve, wherein the hierarchical pore TS-1 molecular sieve is obtained by taking a silicon-titanium ester polymer as atitanium-silicon source. According to the method, silicon and titanium are uniformly linked to the same polymer, and the hydrolysis rate is equivalent during hydrolysis, so that TiO2 precipitation can be prevented, and generation of non-framework titanium is reduced; and the novel silicon-titanium ester polymer can be used as a silicon source and a titanium source and can also be used as a mesoporous template agent in the synthesis process, so that the obtained TS-1 molecular sieve has a mesoporous structure and narrow pore size distribution.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Fresh air purifying photocatalysis technology for fresh air system
InactiveCN106031867AHas a mesoporous structureEfficient photocatalytic performancePhysical/chemical process catalystsDispersed particle separationFiltrationFresh air
The invention relates to a photocatalyst for removing volatile organic compounds (VOCs) contained in fresh air which is inhaled into indoor by a fresh air system. A hydrothermal synthesis method is used for preparing a TiO2 material with a mesoporous structure and a high photocatalytic activity, and a photocatalyst prepared by the method has the mesoporous structure and high photocatalysis efficiency for removing formaldehyde. The invention is characterized in that a preparation method comprises the following steps: a certain amount of titanium alkoxide is dissolved into absolute ethyl alcohol, and a solution A is prepared; a template whose mass percentage is 15-35% and a chelating agent whose mass percentage is 10-25% (the mass percentages are calculated based on the titanium alkoxide raw material) are dissolved into deionized water, and a solution B is prepared; the solution A and the solution B are mixed in order to prepare suspension liquid; the suspension liquid is transferred to a crystallization reaction vessel whose inner liner is made from polytetrafluoroethylene, a reaction is carried out at 150-220 DEG C for 6-24 hours, the reaction vessel is cooled to a room temperature, centrifugation is carried out for reaction products in order to obtain precipitation, deionized water and absolute ethyl alcohol are used for cleaning for 5-10 times, pumping filtration is carried out in order to obtain a sample, and the sample is dried in a baking oven at 100-120 DEG C for 12-24 hours in order to obtain powder; the powder is placed in a muffle furnace, the muffle furnace is heated at a speed of 1-5 DEG C / min to 450-650 DEG C, calcination is carried out for 3-5 hours, and the TiO2 photocatalyst with the mesoporous structure is obtained.
Owner:JIANGSU HONGZHU ENVIRONMENTAL SCI & TECH
Mesoporous Zr-based coordination polymer and preparation method and application thereof
ActiveCN107511134ALarge specific surface areaEasy to prepareOther chemical processesWater contaminantsMethyl orangeHeavy metals
The invention relates to a mesoporous Zr-based coordination polymer, the coordination polymer is a mesoporous material, the average aperture is 3.8-6 nm, and the specific surface area is 125-157 m<2> / g. A preparation method comprises the following steps: respectively preparing a ZrCl4 aqueous solution and an aqueous solution of terephthalic acid and alkali (or organic amine), mixing the components to obtain a sample system, reacting the sample system for 1-24 h, performing centrifugation, using triethylamine and acetone for repeatedly washing for 2-3 times in order, and performing vacuum drying for 12 h at the temperature of 60 DEG C to obtain the mesoporous Zr-based coordination polymer. The mesoporous Zr-based coordination polymer has the characteristics of high specific surface area and meso pore, the preparation method has the advantages of simple process, no pollution, and high yield, and is suitable for large-scale production. The mesoporous Zr-based coordination polymer has high adsorption quantity on a dye (methylene blue and methyl orange) and heavy metal ions (Fe<3+>, Co<2+>, Ni<2+> and Cu<2+>), is reusable, and can still reach 93.4% of the primary adsorption quantity after 5-time repetition.
Owner:山西立铂隆新材料有限公司
Mesoporous polycaprolactone modified by natural high polymer and application thereof
The invention relates to a mesoporous-structure polycaprolactone modified by a natural high polymer and application thereof. The mesoporous-structure polycaprolactone modified by the natural high polymer has the advantages of high modification degree, a modifying object has small possibility of dissolving out and the like. In addition, the polycaprolactone provided by the invention also has a medicine slow-release function, and lays a foundation for the polycaprolactone to become a medicine-carrying functionalization tissue engineering support.
Owner:EAST CHINA UNIV OF SCI & TECH
Hollow silicon dioxide sub-micron sphere with inner core and its preparation method and use
InactiveCN101121519BLoose structureGood monodispersityNanostructure manufactureSilicaChemical reactionSilanes
The present invention belongs to the technical field of the nano material, especially relating to a hollow silica submicron ball with a kernel and the preparation method and the use. In an alcohol system, a silicon ester and a silane coupling agent hydrolyze together under an ammonia catalysis, which produces the hybrid silica submicron ball. The hydrofluoric acid liquor processes a sol of the hybrid silica submicron ball, which produces the hollow silica submicron ball with the kernel. The particle size of the round submicron ball is between 100nm and 1000nm and the thickness of a shell is between 20nm and 200 nm. A movable round silica kernel with the particle size between 50nm and 600nm is in a hollow cavity. The submicron ball has a mesopore structure, of which the average pore diameter is between 3nm and 10nm and the specific surface area is between 140m2 / g and 500 m<2> / g. the present invention can serve as a release carrier for a therapeutic medicine and can be used to build a photonic crystal, serving as a micro reactor, a energy storage material and a catalyst carrier of the chemical reaction. The present invention has the simple method and process and short production period.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Method for preparing acidification stripped vermiculite supported TiO2 photocatalyst
InactiveCN102658106BRich reservesEasy to obtainPhysical/chemical process catalystsWater/sewage treatment by irradiationNanoparticleWastewater
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Preparation method of organic-inorganic hybrid transparent mesoporous gel monolith
InactiveCN103145141AEvenly distributedIncrease the doping concentrationMolecular-sieve and base-exchange compoundsMolecular-sieve compoundsChemistryMolecular sieve
The invention discloses a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith, belongs to the technical field of mesoporous molecular sieve functional materials, and particularly relates to a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith which is large in size, crack-free and optically transparent and provided with pore walls modified by ethylidene. The preparation method is characterized by comprising the following steps of: by using 1,2-bis(triethoxysilane) ethane as a single silicon source, rapidly synthesising the organic-inorganic hybrid transparent mesoporous gel monolith provided with pore walls modified by ethylidene by controlling a component proportioning ratio and the conditions of system gelation in an acidic medium taking a nonionic surfactant as a template. The preparation method of the material is simple, and easy to operate; the product is regular in shape, controllable in size, and good in heat stability and transparency; and modifying groups are uniformly distributed in the pore walls of the transparent mesoporous gel monolith and unable to block pore channels. The preparation method has an important application value in the field of development for novel optical devices.
Owner:TAIYUAN UNIV OF TECH
Preparation method of double-groups modified transparent meso pore silica gel monolith
InactiveCN103159221BRich framework componentsAchieve regulationSilicaMolecular-sieve and base-exchange compoundsGel preparationMolecular sieve
The invention relates to a preparation method of double-groups modified transparent meso pore silica gel monolith, which belongs to the meso pore molecular sieve functional material technical field. The preparation method is characterized in that components distribution ratio and synthesis condition are controlled, in an acidic medium which takes a non-ionic surface active agent as a template, an inorganic silicon source and two modified silicon sources containing different functional groups are polymerized together to the transparent meso pore silica gel monolith of a pore canal modified by any two of alkyl group, aryl group, alkenyl group, alkylhalide group or sulfydryl group. The gel preparation method is simple, the product shape is regular, the size is controllable, the heat stability and transparency are good, Two modified groups are uniformly distributed in the meso pore silica gel pore canal, the concentration is adjustable, and the modified groups provide micro-area polar environment capable of selecting in a diversified mode for guest molecules, and have important value in development field of a new optical device. The double-groups modified transparent meso pore silica gel monolith obtained by extracting the solvent and removing a template has wide application prospect in the fields of catalysis, adsorption and separation.
Owner:TAIYUAN UNIV OF TECH
Preparation method and application of adsorbing material for cape jasmine flower essential oil top note extraction
InactiveCN111135795AHas a mesoporous structureEasy to prepareOther chemical processesEssential-oils/perfumesPhysical chemistryMontmorillonite
The invention provides a preparation method and application of an efficient adsorbing material for cape jasmine flower essential oil top note extraction. The preparation method comprises the followingsteps: taking lignin, montmorillonite and deionized water, putting the materials into a reaction kettle, adding 0.1 mol / L dilute acid, stirring for a reaction at 80-250 DEG C, fully reacting, separating, washing with water to obtain the biochar and clay composite material, and roasting the biochar and montmorillonite composite material at 250-700 DEG C under the protection of nitrogen for 1-10 hours to obtain the lignin biochar and montmorillonite composite material.
Owner:温州子久堂生物科技有限公司
Mesoporous silica nanosphere with ultrahigh specific surface area and preparation method thereof
The invention relates to a mesoporous silica nanosphere with an ultrahigh specific surface area and a preparation method of the mesoporous silica nanosphere. The preparation method of the mesoporous silica nanospheres with the ultrahigh specific surface area comprises the following steps: (1) dissolving tetraethoxysilane in an ethanol solution, and magnetically stirring and uniformly mixing to obtain a precursor solution A; and uniformly mixing ammonia water, water and a pore-forming agent to obtain a precursor solution B; (2) equivalently sucking the precursor solution A and the precursor solution B, placing the precursor solution A and the precursor solution B on a micro-injection pump, and quickly mixing the precursor solution A and the precursor solution B through a micro-channel reactor at the same injection speed to obtain a micro-emulsion; and (3) standing the micro-emulsion, carrying out water bath heating demulsification, carrying out suction filtration, drying, and carrying out high temperature calcination to obtain the mesoporous silica nanospheres. According to the preparation method disclosed by the invention, the mesoporous silica nanospheres with the specific surfacearea of about 700-1860m < 2 > / g can be rapidly and continuously prepared, the pelletizing effect is good, and the process time is short.
Owner:SHIHEZI UNIVERSITY
Crystallized mesoporous magnesium silicate powder and preparation method thereof
InactiveCN104495861AThe reaction raw materials are simpleLow costMagnesium silicatesSynthetic magnesium silicateMesoporous silica
The invention discloses crystallized mesoporous magnesium silicate (3MgO.4SiO2.2H2O) powder and a preparation method thereof. The crystallized mesoporous magnesium silicate (3MgO.4SiO2.2H2O) powder is of a two-dimensional hexagonal mesoporous structure, and a mesopore wall is composed of crystalline-state magnesium silicate. The preparation method of the crystallized mesoporous magnesium silicate powder comprises the following steps: by taking C-filled mesoporous silica SBA-15(C@SBA-15) as an auxiliary template and silicon source, MgCl2.6H2O as a magnesium source, and NH4Cl, NH3.H2O and deionzed water as reaction mediums, carrying out hydrothermal reaction at a certain temperature for a certain period of time, so that mesoporous magnesium silicate is obtained, wherein in a hydrothermal reaction process, SiO2 in C@SBA-15 is taken as reactant to participate in reaction, C in C@SBA-15 can be used for supporting the mesopore wall, magnesium silicate generated by reaction coats the surface of C to form a shell layer, and the magnesium silicate shell layer is taken as the mesopore wall; carrying out high-temperature calcining on the hydrothermal reaction product for removing C to form a mesoporous passage so as to finally obtain the crystallized mesoporous magnesium silicate powder. The prepared mesoporous magnesium silicate powder has high degree of order, large aperture and specific surface area, high crystallinity and good stability.
Owner:INNER MONGOLIA UNIVERSITY
Biological activity glass mesoporous microsphere and preparation method thereof
InactiveCN101314039BHas a mesoporous structureSmall and uniform particle sizeInorganic non-active ingredientsCalcium nitrate tetrahydratePolyethylene glycol
The invention discloses a biological activity glass meso-porous microsphere and a preparation method thereof. The biological activity glass meso-porous microsphere comprises the following chemical compositions in percentage by weight: 16 to 36 percent of CaO, 4 percent of P2O5 and 60 to 80 percent of SiO2; the average grain diameter is between 2 and 5 [mu]m; the grains are sphere -shaped; the specific surface area of the grains is between 30.6m<2> / g and 89.7m<2> / g; and the meso-porous diameter is between 1.9 and 4.1nm. The method adopts the organic template method, comprising the following the steps that: a catalysts is added in deionized water, the mixed solution is added with tetraethoxysilane, triethyl phosphate and calcium nitrate tetrahydrate for hydrolysis reaction, the mixed solution is added with organic template polyethylene glycol and fully stirred to obtain sol, the sols is subject to aging to form wet gel, the wet gel is immersed in and washed by absolute ethyl alcohol and dried to obtain dry gel, and the dry gel is put in a crucible for heat treatment to obtain the finished products. The biological activity glass meso-porous microsphere has the advantages of higher biological activity and degradation property and good biological compatibility.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method, product and application of rapid-subsidence organic flocculation adsorbent
InactiveCN109160977AHas a mesoporous structureHydrophobicWater contaminantsWater/sewage treatment by flocculation/precipitationSorbentSubsidence
The invention relates to a preparation method, a product and application of a rapid-subsidence organic flocculation adsorbent. In the method, the flocculation adsorbent is prepared by taking azodiisobutyronitrile as a polymerization initiator in a hydrous tetrahydrofuran reaction system through divinyl benzene and a water-soluble comonomer via crosslinking copolymerization. Polyelectrolyte chainsenriched on the surface of the product obtained through the method are capable of adsorbing electrifiedmacromolecular organic pollutants and colloids in flocculation water, and have certain mesoporousstructures and hydrophobicity to adsorb a part of low-molecular weight organic matters. In sewage treatment, the preparation method has the characteristics of being wide in application range, low indosage, rapid in sedimentation and the like.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH
Synthetic method of MoS2/SnS nanometer heterojunction
ActiveCN107321367AHigh purityThe synthesis process is simplePhysical/chemical process catalystsHeterojunctionThiourea
The invention relates to a synthetic method of an MoS2 / SnS nanometer heterojunction. The synthetic method comprises the following steps of 1) weighing ammonium molybdate ( (NH4)6Mo7O24.4H2O) and thiourea ((NH2)2CS), and respectively dissolving the ammonium molybdate ( (NH4)6Mo7O24.4H2O) and the thiourea ((NH2)2CS) into deionized water; 2) slowly dropwise adding an ammonium molybdate solution in a thiourea solution, and stirring to enable the ammonium molybdate solution and the thiourea solution to be uniformly mixed; 3) weighing a certain quantity of lysine, dissolving the lysine into the deionized water, pouring a dissolved solution in a mixed solution of the ammonium molybdate and the thiourea, regulating a pH value to be 4-5, stirring, moving the mixed solution into a reaction kettle, and keeping the temperature for a certain time under the hydrothermal condition with the temperature being 190-200 DEG C; 4) carrying out separation, washing and drying to obtain MoS2; 5) weighing SnCl2, dissolving the SnCl2 into a solvent, stirring, adding the MoS2 in the solvent, and continuously stirring; 6) weighing Na2S.9H2O, dissolving the Na2S.9H2O into the deionized water, dropwise adding a dissolved solution in a mixed solution of the MoS2 and the SnCl2, and stirring to carry out full reaction; and 7) carrying out separation, washing and drying on a reactant to obtain a final product. The synthetic method provided by the invention is simple in synthetic process; the product is high in chemical stability and large in specific surface area and has good visible-light catalytic performance.
Owner:LUOYANG INST OF SCI & TECH
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