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53results about How to "Appropriate pore size distribution" patented technology
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Folic acid coupled targeted ferriferrous oxide/mesoporous silica/copper sulfide nano-composite particle as well as preparation method and application thereof
InactiveCN105920601AAchieve synergyExcellent photothermal performanceOrganic active ingredientsEnergy modified materialsSide effectCancer cell
The invention relates to a folic acid coupled targeted ferriferrous oxide / mesoporous silica / copper sulfide nano-composite particle as well as a preparation method and an application thereof. The nano-composite particle consists of Fe3O4@mSiO2 core-shell structural nanoparticles, wherein the core-shell structural nanoparticles take Fe3O4 nanoparticles as cores and mSiO2 as shells, and copper sulfide nanoparticles and folic acid cover the surfaces of the shells; the folic acid is grated on one part of the mesoporous silica (mSiO2) and the copper sulfide particles are loaded on the other part of the mesoporous silica; and polyethylene glycol is grated on the surface of the copper sulfide nanoparticles. Compared with the prior art, the nano-composite particles disclosed by the invention has a broad application prospect in the aspects of nuclear magnetic resonance imaging, drug loading and photothermal therapy; anti-cancer drugs and photothermal reagents can be transmitted to tumor parts in a targeted mode; the nano-composite particle can reduce toxic and side effects on normal tissues and cells, and meanwhile, the nano-composite particle can effectively kill cells, so that a treatment effect is further improved; and moreover, the nano-composite particle is relatively low in preparation condition demand and cost.
Owner:SHANGHAI UNIV OF ENG SCI
Hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, and preparation method and application thereof
ActiveCN102614909AIncreased total phenolic contentImprove water resistanceMolecular sieve catalystsHydrocarbon oils refiningNickel MonoxideChromium(III) oxide
The invention belongs to the technical field of catalysts for hydrodenitrogenation of coal tar. The technical problem to be solved is to provide a hydrodenitrogenation catalyst capable of deeply removing a nitrogen-containing compound from coal tar and provided with high mechanical strength, wear resistance and water resistance, and a preparation method and application thereof. The invention adopts the technical scheme that in the hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, active components consist of tungsten trioxide, nickel monoxide and chromium sesquioxide; aids comprise fluorine and phosphorus; and a carrier consists of aluminum oxide, zirconium oxide, a Hbeta molecular sieve, a binder and an extrusion aid. By adopting the hydrodenitrogenation catalyst capable of deeply removing the nitrogen-containing compound from the coal tar, the oil nitrogen content of the hydrogenation product can be reduced to be below 50 micrograms / gram; and the hydrodenitrogenation property is high, so that the oil sulfur content of the hydrogenation product can be reduced to be below 40 micrograms / gram.
Owner:山西中科化美科技有限责任公司
Preparation method and application of nitrogen-doped peel based porous carbon material
ActiveCN109534341AOvercome areaOvercoming the drawback that the pore distribution has a negative impactCarbon compoundsHybrid capacitor electrodesCapacitanceHigh energy
The invention discloses a preparation method and application of a nitrogen-doped peel based porous carbon material. According to the method, waste peel is used as biomass raw materials; through an ultrasound method, the waste peel and a nitrogen source are pretreated; at low-temperature, the materials are pre-carbonized into nitrogen-doped peel based carbon; then, potassium bicarbonate is used asan activating agent for activation at high temperature; finally, through treatments of acid washing, water washing, drying and the like, the preparation of a nitrogen-doped peel based porous carbon super capacitor electrode material with high specific surface area, good pore diameter distribution and certain nitrogen content is realized. The prepared super capacitor material has excellent electrochemical performance which is shown in aspects of high specific capacitance, high energy density, good circulation stability and the like. In addition, the method does not relate to the use of strong basic or strong acidic or toxic activating agents; the preparation method is low in cost and achieves the environment-friendly effects.
Owner:CHINA UNIV OF MINING & TECH
Three-dimensionally ordered macroporous-mesoporous graphene, preparation method and application thereof
ActiveCN106554011ALarge specific surface areaUniform pore size distributionGrapheneCeramic compositeControllability
The invention relates to a three-dimensionally ordered macroporous-mesoporous graphene, a preparation method and application thereof. The preparation method includes the steps of: (1) immersing orderly stacked organic polymer template balls into a precursor solution of ceramics and conducting heat treatment after separation and drying to prepare an organic polymer template ball / ceramic composite; (2) removing the organic polymer template balls in the obtained organic polymer template ball / ceramic composite to prepare three-dimensional porous ceramics; (3) growing graphene on the prepared three-dimensional porous ceramic substrate by using chemical vapor deposition to prepare a three-dimensional ceramic composite with graphene grown thereon; and (4) adding the three-dimensional ceramic composite with graphene grown thereon into an etching solution, removing the ceramic template and conducting drying to obtain the three-dimensional ordered macroporous-mesoporous graphene. The invention has the advantages of simple process, low cost, strong controllability, and easy realization of large-scale production.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Selenium quantum dot/silicon dioxide/copper sulfide nanocomposite particle, preparation and application thereof
InactiveCN107469078AAccurate and efficient transmissionSmall toxicityOrganic active ingredientsEnergy modified materialsCancer cellSide effect
The invention relates to a selenium quantum dot / silicon dioxide / copper sulfide nanocomposite particle, preparation and application thereof. The nanocomposite particle has a chemical formula of Se@SiO2-FA-CuS, selenium quantum dot is adopted as the core, porous silicon dioxide is taken as the shell, amination modification is carried out on the shell surface, and a targeting reagent folic acid is grafted, and then copper sulfide nanoparticles are adsorbed on the shell surface through electrostatic effect. Compared with the prior art, the Se@SiO2-FA-CuS nanocomposite particle provided by the invention has a novel structure and good photothermal performance, has broad application prospects in terms of drug loading, photothermal therapy and targeted transportation, can achieve targeted transportation of anticancer drugs and photothermal reagents to cancer sites, effectively kills cancer cells while reducing the toxic and side effect on normal tissues and cells, further improves the therapeutic effect, and is of enormous potential in promotion of chemotherapy and photothermal therapy (PTT) combined application and enhancement of cancer treatment efficacy.
Owner:SHANGHAI UNIV OF ENG SCI
Catalyst for fischer-tropsch synthesized oil product hydrogen saturation and its preparing method and use
ActiveCN1554728AReasonable structureAppropriate pore size distributionHydrocarbon oils refiningHydrogenTitanium
The catalyst consists of nickel oxide 5.0-18.0 wt%, tungsten carbide 1.0-11.0 wt%, molybdenum oxide 0.1-8.0 wt%, titania 1.5-19.0 wt% and alumina 44.0-92.4 wt%. The preparation process includes four steps of treatment of alumina, introducing titanium, soaking of tungsten, and introducing active nickel and molybdenum components. The catalyst has the features of high activity of hydrogenating and saturating oil synthesized via Fischer-Tropsch process, and is especially suitable for hydrogenating and saturating oil with high olefin content and certain amount of oxide.
Owner:SYNFUELS CHINA TECH CO LTD
Hydrofining method of low-grade gasoline/diesel oil
ActiveCN102851061AImprove thermal stabilityAppropriate pore size distributionHydrocarbon oils refiningChemistryMolecular sieve
The invention relates to a hydrofining method of low-grade gasoline / diesel oil. A catalyst uses Si-modified alumina and ETS-10 titanium silicalite molecular sieve with grain size less than 2 Mum as carriers, and Fe, Co, Ni, and Mo and / or W as active components. The Si-modified alumina accounts for 0.5-20 wt% (calculated based on SiO2) of the modified alumina; and the ETS-10 titanium silicalite molecular sieve is sodium / potassium type, the molar ratio of TiO2 to SiO2 is 0.1-0.5, and the total content, by weight, of Na2O and K2O is less than 0.2 wt%. For low-grade gasoline, the invention can decrease sulfur content to below 50 Mug / g, nitrogen content to below 50 Mug / g, and olefin content to below 30 vol%, and the product octane number loss is smaller than 3 units; and for high-sulfur diesel oil, the invention can decrease sulfur content to below 50 Mug / g and nitrogen content to below 20 Mug / g, and the diesel oil yield is higher than 99.8 wt%.
Owner:PETROCHINA CO LTD
Preparation method of poisoning-resistant catalyst for unsaturated oil hydrogenation
ActiveCN102513114AHigh strengthStable physical parametersFatty acid hydrogenationMetal/metal-oxides/metal-hydroxide catalystsNickel saltHydrogen
The invention discloses a preparation method of a poisoning-resistant catalyst for unsaturated oil hydrogenation. The preparation method is characterized by comprising the following steps of 1, putting an alkaline precipitator solution into a reactor, and heating to a temperature of 60 to 70 DEG C, 2, adding a mixed solution of a soluble nickel salt, a ferric salt and a rare earth salt into the heated alkaline precipitator solution with stirring in a period of 1 to 2 hours, 3, then fast adding alumina carriers into the mixed solution obtained by the steps 2, stirring for 0.5 to 1 hour, filtering, and washing by deionized water until acid radical ions are removed completely, and 4, drying at a temperature of 110 to 120 DEG C for 4 to 5 hours, crushing, and carrying out hydrogen feeding at a temperature of 400 to 500 DEG C for 2 to 3 hours to obtain the poisoning-resistant catalyst for unsaturated oil hydrogenation, wherein an Ni / Fe atomic ratio of the soluble nickel salt to the ferric salt is in a range of 5 to 25 and the poisoning-resistant catalyst for unsaturated oil hydrogenation contains 30 to 50 wt% of nickel, 2 to 5 wt% of iron, 0.5 to 1.0 wt% of a rare earth salt of cerium and 0.5 to 1.0 wt% of a rare earth salt of lanthanum.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Method for preparing high-specific-surface-area activated carbon from blend coal of coke powder and/or quenched coke powder
InactiveCN108622894ASave resourcesReduce solid waste treatment costsCarbon compoundsOther chemical processesPulverizerActivated carbon
The invention relates to utilization processes for coking by-products, i.e., coke powder and quenched coke powder, especially a method for preparing high-specific-surface-area activated carbon from blend coal of coke powder and / or quenched coke powder. The method comprises the following steps: (a) batching: compounding coke powder and / or quenched coke powder, other carbon-containing materials andan activator; (b) crushing: putting a mixture obtained in the step a) in a crusher for crushing to a powder form, wherein the desired particle size of the powder allows the powder to pass through 70%or more of mesh holes in a 120-mesh sieve; (c) carbonization and activation: subjecting a material obtained in the previous step to carbonization at 500 to 650 DEG C for 1 to 3 h, and then to activation at 750 to 950 DEG C for 0.5 to 4 h; and (d) post-treatment: subjecting the activated material to pickling and / or washing to remove ash and carrying out drying so as to obtain an active carbon product, wherein a weight ratio of the total weight of the coke powder and / or quenched coke powder and the other carbon-containing materials to the activator is 1: 1 to 6: 1, and a weight ratio of the cokepowder and / or quenched coke powder to the other carbon-containing materials is 1: 1 to 6: 1.
Owner:BEIJING RISUN TECH CO LTD
Folate-conjugated-and-targeted nanocomposite particle, and preparation method and application thereof
ActiveCN106963744AExcellent CT imaging effectGood MRIPowder deliveryDrug photocleavageSide effectCancer cell
The invention relates to a folate-conjugated-and-targeted nanocomposite particle, and a preparation method and application thereof. The nanocomposite particle uses polystyrene as a core and chitosan as a shell; the external surface of the shell is coated with Au nanoparticles and Fe3O4 nanoparticles, grafted with a targeting reagent folate and loaded with a photo-thermal reagent indocyanine green; and the nanocomposite particle is used as an infrared photo-thermal reagent, a drug carrier, a CT imaging contrast agent, a magnetic resonance imaging contrast agent or a fluorescence imaging contrast agent. Compared with the prior art, the invention has the advantage that the folate-conjugated-and-targeted nanocomposite particle prepared in the invention has good application prospects in CT imaging, magnetic resonance imaging, fluorescence imaging and photo-thermal treatment, can realize targeted delivery of the photo-thermal reagent to a tumor site, effectively kills cancer cells while reducing toxic and side effect on normal tissue and cells, further improves treatment effect and has great potential in promotion of accurate diagnosis and improvement of photo-thermal treatment (PTT) effect on cancers.
Owner:SHANGHAI UNIV OF ENG SCI
Method for preparing heteroatom co-doped porous carbon materials based on direct ionic liquid carbonization method
InactiveCN106629720AAppropriate pore size distributionLarge specific surface areaCarbon compoundsHybrid capacitor electrodesPorous carbonCarbonization
The invention belongs to the field of battery electrode materials, and relates to a method for preparing heteroatom co-doped porous carbon materials based on a direct ionic liquid carbonization method. The heteroatom co-doped porous carbon materials prepared by the direct ionic liquid carbonization method have proper pore size distribution and high specific surface area, and show high specific capacity and excellent circulating stability when serving as super-capacitor and lithium secondary battery electrode materials. The synthesis process of the heteroatom co-doped porous carbon materials synthesized by the direct ionic liquid carbonization method is simple, and other heteroatom sources are omitted. The heteroatom co-doped porous carbon materials synthesized by ionic liquid serving as a green solvent is green, environmentally friendly and high in practical level, and the problems of toxicity and complexity of a current preparation process of heteroatom doped electrode materials are solved.
Owner:DALIAN UNIV OF TECH
Catalyst for hydrogenating Fischer-Tropsch synthetic wax and its prepn
InactiveCN1417194AAppropriate pore size distributionHigh hydrogenationPhysical/chemical process catalystsOrganic compound preparationWaxTitanium oxide
The catalyst consists of nickel oxide 5.0-20.0 wt%, tungsten oxide 0.1-15.0 wt%, titania 1.0-20.0 wt% and alumina 45.5-93.9 wt%. The preparation process includes the treatment of alumina, the introduction of titania, and impregnating active tungsten oxide and nickel oxide components. The present invention has the advantages of high hydrogenation activity for heavy hydrocarbon, and is especially suitable for hydrogenating saturation wax with high olefin content.
Owner:SYNFUELS CHINA TECH CO LTD
Preparation method and application of iron-modified carbon microsphere/carbon nanosheet composite porous carbon based on hydrothermal carbonization of moso bamboos
ActiveCN112194132AOvercome temperatureOvercome energy consumptionCarbon compoundsHybrid capacitor electrodesIron sulfatePorous carbon
The invention discloses a preparation method of iron-modified carbon microsphere / carbon nanosheet composite porous carbon based on hydrothermal carbonization of moso bamboos. The preparation method comprises the following steps: firstly, crushing biomass raw material moso bamboos into powder, and carrying out screening and drying; secondly, uniformly mixing the crushed moso bamboo raw material, ferric sulfate and ultrapure water, carrying out hydrothermal treatment, naturally cooling to room temperature after the reaction is finished, carrying out suction filtration, washing with absolute ethyl alcohol and ultrapure water to remove impurities, and drying to obtain the iron-modified carbon microsphere / carbon nanosheet composite hydrothermal carbon; and mixing the composite hydrothermal carbon with an activating agent, fully grinding the mixture in a mortar, putting the powder into a tubular furnace, performing high-temperature activation in an inert gas atmosphere, naturally cooling toroom temperature, and performing acid washing, water washing and drying on the obtained material to obtain the iron-modified carbon microsphere / carbon nanosheet composite porous carbon for the supercapacitor. The iron-modified carbon microsphere / carbon nanosheet composite porous carbon prepared by the method has unique morphology, and has a wide application prospect in the fields of porous materials and supercapacitors.
Owner:ZHEJIANG UNIV
Method for preparing high acid value oil hydrogenation catalyst
InactiveCN102895975AHigh strengthStable physical parametersFatty acid hydrogenationMetal/metal-oxides/metal-hydroxide catalystsPtru catalystHigh activity
The invention relates to a method for preparing high acid value oil hydrogenation catalyst. The method comprises the following steps: making macro-pore-volume aluminum oxide as a carrier; making nickel and iron as active components; and making magnesium as auxiliary agent so as to prepare catalyst. A catalyst preparation method is characterized by simple operation, easy filter, high activity and good selectivity; compared with other kindred catalyst, the use quantity of the catalyst is reduced by 15-20%.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Method for preparing active carbon material for organic super capacitor by using straw
InactiveCN100572270CAppropriate pore size distributionLarger than surfaceFixed capacitor electrodesElectrolytic capacitorsCapacitanceOrganic base
A method for making activated carbon materials for organic supercapacitors from straws, characterized in that crop straws are selected as raw materials, and the activated carbon materials for organic supercapacitors are obtained through the process steps of drying and crushing, carbonization, and activation in sequence. The activated carbon prepared by the method of the present invention has a large specific surface area, and when 1.2mol / l MeEt3NBF4 / AN is used as the electrolyte, the cyclic voltammetry test is carried out, and the specific capacitance is 232F / g at 2mv / s, which is suitable as an electrode material for organic supercapacitors .
Owner:HEFEI UNIV OF TECH
Catalyst for hydrogenating Fischer-Tropsch synthetic wax and its prepn
InactiveCN1164360CAppropriate pore size distributionHigh activityPhysical/chemical process catalystsOrganic compound preparationWaxTitanium oxide
The catalyst consists of nickel oxide 5.0-20.0 wt%, tungsten oxide 0.1-15.0 wt%, titania 1.0-20.0 wt% and alumina 45.5-93.9 wt%. The preparation process includes the treatment of alumina, the introduction of titania, and impregnating active tungsten oxide and nickel oxide components. The present invention has the advantages of high hydrogenation activity for heavy hydrocarbon, and is especially suitable for hydrogenating saturation wax with high olefin content.
Owner:SYNFUELS CHINA TECH CO LTD
Dual-pore composite alumina material
InactiveCN103372464AImprove thermal stabilityAppropriate pore size distributionCatalyst carriersMolecular sieve catalystsCrystalliteMolecular sieve
The invention relates to a dual-pore composite alumina material, consisting of the following components in percentage by weight: 0.5-60% of small-hole alumina, 10-80% of large-hole alumina and 0.5-30% of a small-grain titanium silicon molecular sieve, wherein the titanium silicon molecular sieve is ETS-10 and is subjected to hydrothermal treatment or alkali treatment modification, the grain size of the molecular sieve is less than 0.5 micron, the specific area of the material is 200m<2> / g-400m<2> / g, the pore volume is 0.30ml / g-0.60ml / g, the distribution of the pores of which the pore sizes are 3-6nm accounts for 10-40% of the total pore volume, and the distribution of the pores of which the pore sizes are 8-20nm accounts for 60-90% of the total pore volume. The dual-pore composite alumina material is used for preparing an adsorbent and a catalyst carrier.
Owner:PETROCHINA CO LTD
Method for preparing silicon-aluminium denitrfying agent
ActiveCN101869830AHas solid acidityWell-developed pore structureOther chemical processesHydrocarbon oils refiningPolymer scienceHYDROSOL
The invention relates to a method for preparing a silicon-aluminium denitrfying agent. The method for preparing the silicon-aluminium denitrfying agent needs to respectively prepare a silica sol and an aluminium sol, then mix the two sols, regulate a pH value of the mixed sol, carry out ageing on the sol the pH value of which is regulated and finally carry out decompression drying and roasting onan aged gel product. The denitrfying agent prepared by the method has more suitable acid center and has stronger selectivity for basic nitrogen compounds. Moreover, the denitrfying agent prepared by using the method for preparing the silicon-aluminium denitrfying agent has 99.9 percent of removal rate for trace amount of nitrides and a great amount of nitrides. The more important point is that when the denitrfying agent realizes the high denitrification rate, the nitrogen-absorption capacity of the denitrfying agent can also reach 2.1 percent.
Owner:BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
Silicon carbide/silicon nitride carrier, preparation method thereof, Fischer-Tropsch synthesis catalyst, and preparation method and application of catalyst
ActiveCN110142060AGood dispersionIncrease loadPhysical/chemical process catalystsLiquid hydrocarbon mixture productionActive componentHigh heat
The invention belongs to the technical field of Fischer-Tropsch synthesis catalysts, and especially relates to a silicon carbide / silicon nitride carrier, a preparation method thereof, a Fischer-Tropsch synthesis catalyst, and a preparation method and an application of the catalyst. 100 wt% of the silicon carbide / silicon nitride carrier comprises 55-72 wt% of silicon nitride, 25-40 wt% of silicon carbide and 1-12 wt% of alumina; and the Fischer-Tropsch synthesis catalyst includes 20-60 wt% of an active component, 0-20 wt% of a cocatalyst and 30-50 wt% of the silicon carbide / silicon nitride carrier. The silicon carbide / silicon nitride carrier is selected to make the Fischer-Tropsch synthesis catalyst have the advantages of good high temperature stability, good arbrasion resistance and high Fischer-Tropsch synthesis activity.
Owner:CHNA ENERGY INVESTMENT CORP LTD +1
Trichoderma-regulated biomass porous activated carbon as well as preparation method and application thereof
ActiveCN112811420ALarge specific surface areaLarge hole volumeCarbon compoundsHybrid capacitor electrodesMixed wasteLarge pore size
The invention provides trichoderma-regulated biomass porous activated carbon as well as a preparation method and application thereof. According to the invention, the mixed waste biomass grown by trichoderma is used for preparing the carbon material precursor for the first time, wherein the obtained activated carbon has the characteristics of large specific surface area, large pore volume, proper pore size distribution and abundant surface functional groups. When the carbon sources are used as electrode materials of a supercapacitor, electrochemical performance better than that of biomass derived carbon can be obtained. The invention provides a sustainable biological utilization method for obtaining an excellent supercapacitor electrode material by fully utilizing biomass wastes.
Owner:SICHUAN AGRI UNIV
Method for grading catalysts for hydrofining of inferior distillate oil
ActiveCN102876365BHigh activityGive full play to the adsorption effectTreatment with hydrotreatment processesNitrogenHigh surface
Owner:CNOOC TIANJIN CHEM RES & DESIGN INST +1
Preparation method of honeycomb porous carbon material
InactiveCN110668419AOmit the activation stepEasy to operateCarbon preparation/purificationPorous carbonCarbonization
The invention relates to a preparation method of a honeycomb porous carbon material. Biomass is used as a raw material, the raw material is instantaneously expanded and converted into an expanded three-dimensional reticular porous substance due to rapid evaporation of moisture in the raw material in the high-temperature expansion process, and then the expanded three-dimensional reticular porous substance is subjected to high-temperature carbonization to obtain the porous carbon material. The biomass is expanded by utilizing the high-temperature expansion process to achieve the purpose of opening holes and avoid the subsequent activation step of the porous carbon material in the preparation process. The method is economical and environmentally friendly; the obtained honeycomb porous carbonmaterial has a large specific surface area, rich pore structures and moderate pore size distribution; and the prepared honeycomb porous carbon material has a good application prospect as an electrodematerial for a double-electric layer capacitor.
Owner:HUNAN UNIV OF SCI & TECH
Strontium-doped nitrogen-containing porous carbon material and preparation method and application thereof
ActiveCN107546039AWide variety of sourcesSimple preparation processHybrid capacitor electrodesHybrid/EDL manufactureCapacitancePorous carbon
The invention discloses a strontium-doped nitrogen-containing porous carbon material. The strontium-doped nitrogen-containing porous carbon material is prepared from glucose, semicarbazide, strontium-containing inorganic salt and a reduction agent by steps of performing a hydrothermal reaction and processing, adding an alkali inorganic material solution and performing calcining, activating and processing, wherein the specific surface area is 2,000-2,485m<2> g<-1>, the average pore size distribution is 1.178-1.232nm and the micropore content is greater than 92%. The preparation method comprisesthe steps of 1) preparing a strontium-containing precursor; 2) performing activation of the strontium-containing precursor; and 3) performing post treatment of the strontium-containing precursor. Thestrontium-doped nitrogen-containing porous carbon material, used as the electrode material of a supercapacitor, has the specific capacitance value range of 319-424F g<-1> and high cycling stabilitiesat the current density of 0.5A g<-1>. The strontium doping amount is greatly lowered, and meanwhile, the specific surface area of the material is enlarged, hole diameter distribution is regulated andcontrolled, and electron transport and electrolyte transportation can be facilitated, and in addition, pseudocapacitance can be provided; and in addition, the preparation process is simple, and batchproduction can be realized favorably, so that the strontium-doped nitrogen-containing porous carbon material has high application prospect in the fields of a supercapacitor, a fuel cell and the like.
Owner:GUILIN UNIV OF ELECTRONIC TECH
An alkali-modified alumina material having a high specific surface area, a preparing method thereof and applications of the material
ActiveCN106512918ALarge specific surface areaAppropriate pore size distributionOther chemical processesWater contaminantsAdhesiveSorbent
The invention relates to an alkali-modified alumina material having a high specific surface area, a preparing method thereof and applications of the material. The specific surface area of the alumina material is not less than 350 m<2> / g and the pore volume of the alumina material is not less than 0.5 cm<3> / g. The method includes (1) weighing active alumina powder and pseudoboehmite dry gel powder according to preset mass percentages and fully mixing the active alumina powder and the pseudoboehmite dry gel powder, (2) preparing an aqueous solution of EDTA or a sodium salt of EDTA, adjusting the pH value of the aqueous solution by using an alkali metal salt to achieve full dissolution, and performing particle molding through adopting the aqueous solution as an adhesive, and (3) subjected molded particles to hydration curing, drying and calcination to obtain the alumina material. Compared with the prior art, the prepared alumina material has the high specific surface area, a specific pore structure and surface properties, can be adopted as an adsorbent for a plurality of fields, especially the environment protection field, and can be used for treatment of complexing metal waste water.
Owner:SHANGHAI LVQIANG NEW MATERIALS CO LTD +1
Distillate oil hydrofining catalyst carrier and preparation method thereof
ActiveCN106582732AEvenly distributedSuitable for acidityCatalyst carriersRefining to eliminate hetero atomsDistillationAmorphous silicon
The invention relates to a distillate oil hydrofining catalyst carrier and a preparation method thereof and mainly solves the problems that traditional hydrofining catalysts have non-centralized pore diameter distribution and poorer coking resistance and stability. The technical scheme is as follows: hydrofining catalyst carrier is prepared from, in percentage by weight, 68%-69.5% of at least one of aluminum oxide, silicon oxide and amorphous silicon-aluminum, 10%-20% of small-pore aluminum oxide, 0.5%-2% of P, 1%-8% of Zr and 0.5%-2% of Mg, so that the problems are better solved. According to the carrier preparation method, metal is added in the carrier preparation process, and the carrier has the characteristics of high strength, medium acidity and centralized pore diameter distribution and can be applied to the distillation oil refining field.
Owner:CHINA PETROLEUM & CHEM CORP +1
Battery diaphragm, preparation method thereof and battery
ActiveCN113113721AAppropriate pore size distributionAppropriate thicknessCell component detailsSecondary cells servicing/maintenanceOrganic solventPhysical chemistry
The invention relates to the technical field of batteries, in particular to a battery diaphragm, a preparation method thereof and a battery. The preparation method comprises: loading the core-shell structure composition on a porous and heat-shrinkage-free polymer base membrane, wherein a core body in the core-shell structure composition is made of a metal organic framework material, and a shell layer is made of a polymer material with a melting point of 150-220 DEG C. The method for preparing the porous and heat-shrinkage-free polymer-based membrane comprises the following steps: dissolving an organic polymer which contains polar groups and is resistant to 250-500 DEG C in a first organic solvent to prepare a liquid membrane; swelling the liquid film by using a second organic solvent, and dissolving out the first organic solvent to form pores, so as to prepare a porous gel-state film; and stretching the porous gel-state membrane and then placing the membrane in a solvent to stabilize the structure and the shape so as to prepare the polymer-based membrane. The prepared battery diaphragm does not generate thermal shrinkage, and can effectively prevent gas from shuttling between electrodes. The invention also provides a battery diaphragm and a battery comprising the battery diaphragm.
Owner:TSINGHUA UNIV
Preparation method of precious metal-non-precious metal mixed catalyst
InactiveCN107983346AEffective sedimentation amountIncrease profitHeterogenous catalyst chemical elementsCatalyst activation/preparationSulfateNon precious metal
The invention discloses a preparation method of a precious metal-non-precious metal mixed catalyst. The method comprises the following operating steps: mixing the prepared active Al2O3 and a chloroauric acid, and reacting to prepare Au-Al2O3; and by taking vanadium dioxychloride, titanyl sulfate and strontium nitrate as raw materials, preparing V0.5Ti0.5O2, adding the Au-Al2O3 and the V0.5Ti0.5O2into chloroplatinic acid, and reacting, thereby obtaining the Au-Pt / VO2-TiO2-Al2O3. According to the Au-Pt / VO2-TiO2-Al2O3 precious metal-non-precious metal mixed catalyst prepared by the method disclosed by the invention, the specific surface area and pore volume are greater than those of the conventional single oxide support catalyst, the mixed catalyst is high in catalytic activity and stable inperformance, and the preparation process is easy to control.
Owner:HEFEI SHENZHOU CATALSIS PURIFIER CO LTD
Hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, and preparation method and application thereof
ActiveCN102614909BIncreased total phenolic contentImprove water resistanceMolecular sieve catalystsHydrocarbon oils refiningNickel MonoxideChemistry
The invention belongs to the technical field of catalysts for hydrodenitrogenation of coal tar. The technical problem to be solved is to provide a hydrodenitrogenation catalyst capable of deeply removing a nitrogen-containing compound from coal tar and provided with high mechanical strength, wear resistance and water resistance, and a preparation method and application thereof. The invention adopts the technical scheme that in the hydrodenitrogenation catalyst capable of removing nitrogen-containing compound from coal tar, active components consist of tungsten trioxide, nickel monoxide and chromium sesquioxide; aids comprise fluorine and phosphorus; and a carrier consists of aluminum oxide, zirconium oxide, a Hbeta molecular sieve, a binder and an extrusion aid. By adopting the hydrodenitrogenation catalyst capable of deeply removing the nitrogen-containing compound from the coal tar, the oil nitrogen content of the hydrogenation product can be reduced to be below 50 micrograms / gram; and the hydrodenitrogenation property is high, so that the oil sulfur content of the hydrogenation product can be reduced to be below 40 micrograms / gram.
Owner:山西中科化美科技有限责任公司
Preparation method of ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material
InactiveCN104140128AEasy accessShorten the pathway of diffusionNickel oxides/hydroxidesCapacitanceSulfate
The invention relates to a preparation method of a ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material. The preparation method comprises the steps that nickel sulfate, guanidine hydrochloride and sodium chloride are used as raw materials, mesoporous carbon is used as a template, and then the ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material is prepared through a template method. Compared with the prior art, the preparation method has the advantages that the mesoporous carbon is used as the template, the guanidine hydrochloride is used as precipitating agents firstly without adding any surface active agents, and deionized water is adopted as a reaction solvent; the raw materials are cheap, and the ribbon type graded mesoporous nickel oxide high-specific-capacitance electrode material is nontoxic, harmless, simple in technological process, controllable in particle morphology, free from complex postprocessing processes and low in cost, and has good application prospect.
Owner:TONGJI UNIV
Alkali-modified high specific surface area alumina material and its preparation method and application
ActiveCN106512918BLarge specific surface areaAppropriate pore size distributionOther chemical processesWater contaminantsSorbentAdhesive
Owner:SHANGHAI LVQIANG NEW MATERIALS CO LTD +1
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