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68results about How to "Concentrated pore size distribution" patented technology
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Modified carbon-coated alumina supporter with nucleocapsid structure and preparation method thereof
InactiveCN101327454ALarge specific surface areaLarge hole volumeCatalyst carriersCatalyst activation/preparationOil processingModified carbon
The present invention discloses a modified carbon-covered alumina support with a core-shell structure and a preparation method thereof. The modified carbon-covered alumina support of the present invention is a granule with the core-shell structure. A shell of the core-shell structure is alumina deposited with carbon, and an inner core of the core-shell structure is an industrial alumina support. The modified carbon-covered alumina support of the present invention has the advantages of high specific surface area, large pore volume, high mechanical strength, and the like; the aperture distribution is more concentrated; total acid quantity is increased obviously, and strong acid quantity is reduced; the modified carbon-covered alumina support can be directly used as a catalyst during certain processes and is more applicable to be used as a catalyst support, in particular as a hydrogenation treatment catalyst support during petroleum processing course.
Owner:EAST CHINA UNIV OF SCI & TECH
Preparation method of catalyst for hydrogenation desulfurization and denitrification of light-weight oil
InactiveCN102247864AGood dispersionIncrease profitCatalyst carriersMetal/metal-oxides/metal-hydroxide catalystsSilicon oxideTitanium oxide
The invention discloses a preparation method of a catalyst for hydrogenation desulfurization and denitrification of light-weight oil and is characterized in that the composition of the catalyst comprises a carrier, an auxiliary agent and active metals, wherein the carrier contains aluminum oxide, titanium oxide and silicon oxide; the auxiliary agent is phosphorus; the active metals are oxides of nickel, molybdenum and tungsten; and on the basis of the catalyst, the contents of all components in percentage by weight are as follows: 1 to 4 percent of cobalt oxide, 3 to 10 percent of nickel oxide, 2 to 12 percent of molybdenum oxide, 18 to 30 percent of tungsten oxide, 2 to 5 percent of phosphorus pentoxide, 2 to 15 percent of titanium oxide, 2 to 20 percent of silicon oxide, and the balance of aluminum oxide. The catalyst is obtained by the steps of carrier preparation, co-immersion, calcination and the like.
Owner:CHINA NAT OFFSHORE OIL CORP +1
High temperature resistance basalt fiber composite filter material and preparation method thereof
InactiveCN101612496AStable structureHigh filtration precisionLayered productsFiltration separationFiltrationPore diameter
The invention relates to a high temperature resistance basalt fiber composite filter material and a preparation method thereof; the composite filter material comprises basalt fiber base fabric and high-performance fiber mesh in a weight ratio of 7:1-2:1; the preparation method comprises the following steps: forming high-performance fiber mesh on the basalt fiber base fabric, combining and strengthening the material more by spunlaced process, hot rolling the material, then soaking the material in water repellent oil-proofing agent, sizing and obtaining the finished product. The filter material of the invention has the advantages of stable structure, high filtration accuracy, small bore diameter, concentrated pore diameter distribution and high temperature resistance, can bear 450 DEG C of instantaneous high temperature and can be used stablely for long time below 280 DEG C.
Owner:DONGHUA UNIV
Preparation method of hydrodesulfurization catalyst for high-nitrogen low-quality gasoline and diesel
ActiveCN102151582ALarge specific surface areaGood dispersionPhysical/chemical process catalystsRefining to eliminate hetero atomsHydrodesulfurizationGasoline
The invention relates to a preparation method of a hydrodesulfurization catalyst for high-nitrogen low-quality gasoline and diesel. The catalyst is characterized in that an A12O3-TiO2-SiO2 ternary oxide is taken as a composite carrier; the catalyst comprises the carrier, an auxiliary and active metals; the active metals comprise oxides of nickel, molybdenum and tungsten; the auxiliary is phosphorus; the carrier comprises aluminum oxide, titanium oxide and silicon oxide; based on the weight of the catalyst, nickel oxide accounts for 1-15 wt%, molybdenum oxide accounts for 2-12 wt%, tungsten oxide accounts for 12-35 wt%, phosphorus pentoxide accounts for 2-5% wt%, the titanium oxide accounts for 2-15 wt%, the silicon oxide accounts for 2-20 wt%, and the balance is aluminum oxide. In the method, a room-temperature complexation method is adopted for preparing W-Mo-Ni-P co-impregnation solution with stable dissolution performance, and then the step-by-step saturated impregnation technologyis adopted for loading the active metal components W-Mo-Ni and the auxiliary P on the carrier..
Owner:CHINA NAT OFFSHORE OIL CORP +1
Preparation of pseudo thinolite
ActiveCN1583568AUniform particlesConcentrated pore size distributionAlkali-metal aluminates/aluminium-oxide/aluminium-hydroxide preparationAluminium oxides/hydroxidesSlurryCarbonation
Owner:GUIZHOU BRANCH CHINA ALUMINUM IND
Ultrahigh cross-linked macro-porous adsorption resin applicable to removal of patulin
ActiveCN103772573ADense channelsUnique Pore Size DistributionIon-exchange process apparatusOther chemical processesCross-linkFunctional monomer
The invention provides ultrahigh cross-linked macro-porous adsorption resin which is obtained by taking a styrene monomer as a functional monomer, taking a multi-vinyl monomer as a cross-linking agent, suspending and polymerizing in the presence of a pore forming agent to obtain low-cross-linked macro-porous polystyrene white ball, reacting the obtained white ball with chloromethyl ether under the catalysis of lewis acid to obtain chloromethylation macro-porous polystyrene resin, and carrying out a Friedel-Crafts alkylation reaction on the obtained chloromethylation macro-porous polystyrene resin in the presence of a swelling agent by taking the lewis acid as a catalyst. Through adopting a novel cross-linking agent and pore forming agent system, the obtained resin has the advantages of high specific surface area and uniform pore diameter; the specific surface area is up to 1500-1800m<2> / g, the pore diameter distribution is uniform, a pore channel is dense and the average pore diameter is small; the pore diameter of the obtained macro-porous resin is rightly applicable to removal of patulin in juice and the removing efficiency is high; the resin can be used for pointedly removing the patulin which stably exists in the juice and the potential hazards on the human health, caused by the patulin in the juice, are solved; the ultrahigh cross-linked macro-porous adsorption resin has great social and economic benefits.
Owner:AMICOGEN CHINA BIOPHARM CO LTD
Nanometer grid, nanometer polymer grid material and their preparation method and use method
ActiveCN105348289AMild conditionsEasy to operateOrganic chemistrySolid-state devicesSolubilityEthylene Homopolymers
The invention relates to a nanometer grid, a nanometer polymer grid material and their preparation method and use method and belongs to the field of a photoelectric high and new technology. The nanometer polymer grid material is a homopolymer or copolymer utilizing the nanometer grid as a monomer and has a general structural formula shown in the following description. The nanometer polymer grid material has the characteristics that 1, the nanometer grid monomer has hole and semiconductor photoelectric characteristics, 2, raw materials are cheap and easily available, reaction conditions are mild and operation is easy, 3, the nanometer polymer grid material has excellent mechanical characteristics, 4, the nanometer polymer grid material has good solubility and is convenient for nanometer film or fibration processing, and 5, a rigid skeleton has the advantages of high glass-transition temperature, high heat, electrochemical stability and spectrum stability. The nanometer polymer grid material can be used as a novel nanometer polymer photoelectric material and has a good application prospect in the fields of organic electrons, spinning electrons, photoelectrons, mechano-electronic and nano-biology.
Owner:NANJING UNIV OF POSTS & TELECOMM
Method for preparing porous oxide molecular sieve using plant template
The preparation process of porous oxide molecular sieve with plant template includes the following steps: soaking the selected plant material powder in ammonia water for 1-24 hr to deglue and drying; soaking the plant material powder in the water solution of strong acid salt of metal for 1-24 hr to pre-treat and drying; high temperature treating the plant material powder in oxidation atmosphere at 200-1200 deg.c for 1-10 hr at the temperature raising speed of 1-20 deg.c / min to obtain the porous oxide molecular sieve. The porous oxide molecular sieve MxOy has pore diameter in 2-50 nm, where, M is one of Ni, Fe, Co, Zn, Al and other seven kinds one metal, x is 1, 2 or 3, and y is 1, 2, 3 or 4. The present invention has the features of low cost, wide material source and simple technological process.
Owner:SHANGHAI JIAO TONG UNIV
Preparation method and application of biomass-derived ultra-high specific surface area activated carbon
InactiveCN107140633ALarge specific surface areaConcentrated pore size distributionCarbon compoundsCell electrodesCarbonizationSlurry
The invention discloses a preparation method and application of biomass-derived ultra-high specific surface area activated carbon and belongs to the technical field of preparation of a carbon material and a lithium-sulfur battery. The preparation method utilizes biomass waste palm shells as carbon sources, comprises simple processes such as carbonization, activation, rinsing and drying and can produce the biomass-derived ultra-high specific surface area activated carbon. Concretely, the preparation method comprises mixing activated carbon and sulfur for a sulfur attachment reaction to obtain a palm shell activated carbon-sulfur composite material, mixing the palm shell activated carbon-sulfur composite material, conductive carbon black and polyvinylidene fluoride, dissolving the mixture in nitrogen-methylpyrrolidone to obtain mixed slurry, coating aluminum foil with the mixed slurry and carrying out drying to obtain a positive electrode material of a lithium-sulfur battery. The activated carbon has a high specific surface area, concentrated pore size distribution, high adsorption performances and high electrochemical performances.
Owner:YANGZHOU UNIV
Modified active carbon, and preparation method and application thereof
ActiveCN106362719AIncrease the number ofGood dispersionMetal/metal-oxides/metal-hydroxide catalystsBulk chemical productionDispersityMethanation
The invention provides modified active carbon, and a preparation method and application thereof, belonging to the field of preparation of catalyst carriers. The preparation method comprises the following steps: subjecting graphitized active carbon to treatment with HNO3 and then carrying out high-heat treatment in an ammonia gas atmosphere so as to obtain an active carbon carrier with high mesoporosity. The carrier has the characteristics of a great pore volume, high mesoporosity (no less than 97%), good conductivity, etc. When used as a carrier for an ammonia-synthesis catalyst, the carrier can substantially improve the dispersity of the precious metal ruthenium and improves anti-methanation capability, heat stability and activity of the catalyst. The carrier has wide application prospect in the field of catalysis.
Owner:FUZHOU UNIV
Mixed mesoporous carrier of light alkane dehydrogenation catalyst and preparation method thereof
ActiveCN107398296AHigh strengthHigh activityMolecular sieve catalystsHydrocarbonsAlkaneMolecular sieve
The invention relates to a catalyst carrier prepared from mixed aluminum oxide and mesoporous molecular sieve and a preparation method thereof. The mixed mesoporous carrier is prepared by the following steps of: adding the mesoporous molecular sieve and various auxiliary agent into a conventional aluminum oxide source; performing mixing and extrusion moulding; and then performing hydrothermal treatment, drying and roasting to finally obtain a finished product dehydrogenation catalyst carrier. The prepared light alkane dehydrogenation catalyst carrier has high mechanical strength, good thermal stability and enhanced catalysis activity.
Owner:QINGDAO UNIV OF SCI & TECH
Preparation method and application of porous carbon material co-doped with N, S and P
InactiveCN107195475AEffectively go outDoes not damage the structureHybrid capacitor electrodesHybrid/EDL manufactureSorbentPorous carbon
The invention relates to a preparation method and application of a porous carbon material co-doped with N, S and P, and belongs to the technical field of production of a supercapacitor electrode material. The preparation method comprises the steps of heating and pre-processing a dried honeycomb in a nitrogen environment, and performing cooling and smashing to obtain a honeycomb carbonized powder; performing drying after uniformly mixing the honeycomb carbonized powder and an activating agent, heating and activating the mixture under a condition of nitrogen atmosphere, bleaching the product to a neutral condition after cooling, and performing drying to obtain the porous carbon material co-doped with N, S and P. The porous carbon material co-doped with N, S and P is rich in raw material and low in cost and can be recycled; and moreover, an absorbent can be used for the absorption and separation process of an air-liquid pollutant, control of air pollution and water pollution is facilitated, and the win-win effect of utilizing solid waste and controlling air pollution and water pollution is obtained.
Owner:YANGZHOU UNIV
Mesoporous manganese-based composite metal oxide as well as preparation method and application thereof
InactiveCN103055799ALarge specific surface areaLarge hole volumeOther chemical processesDispersed particle separationThermal insulationManganese
The invention discloses a mesoporous manganese-based composite metal oxide. The specific surface area of the mesoporous manganese-based composite metal oxide is 100-260m<2> / g. A preparation method of the mesoporous manganese-based composite metal oxide comprises the following steps: adding an oxalic acid solution in a metal ion solution in a stirring condition, so as to generate sediments; continuously stirring until sufficient sedimentation is realized; leaching, water washing and drying; and after slowly heating single-phase composite metal oxalate to the temperature of 200-400 DEG C, continuously roasting for 1-4h in a thermal insulation manner, so as to obtain the mesoporous manganese-based composite metal oxide. The preparation process is simple in operation; raw materials are economical and easy to obtain; the large-scale production is easily realized; the obtained material is the manganese-based composite metal oxide with a mesoporous structure and the high specific surface area; a good NO room-temperature adsorption and removal property can be shown; and the application prospect is wide.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Hydrocracking method
ActiveCN107345155AThe skeleton structure is stable and perfectElimination of non-skeletal structuresMolecular sieve catalystsHydrocarbon oil crackingMolecular sieveNaphtha
The invention discloses a hydrocracking method which comprises the following steps that a straight-run diesel oil raw material is in contact with a hydrocracking catalyst to carry out hydrocracking reaction, and an obtained hydrocracking product is separated to obtain heavy naphtha, diesel oil, a jet fuel and hydrogenation tail oil, wherein the used hydrocracking catalyst adopts a modified Y-shaped molecular sieve, amorphous silica-alumina and aluminum oxide as carriers, and the modified Y-shaped molecular sieve is an Y-shaped molecular sieve which is rich in meso pores and is concentrated in effective pore size distribution. The hydrocracking method is particularly suitable for a hydrocracking technology for carrying out hydro-conversion on straight-run diesel oil to produce the jet fuel, and has very high catalytic activity and aviation fuel product yield and the quality of a product is improved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Mesoporous carbon material loaded cobalt-based catalyst and preparation method thereof
InactiveCN110975871AEasy to prepareRegular and orderly structureEnergy inputCatalyst activation/preparationPtru catalystAlcohol
The invention discloses a mesoporous carbon material loaded cobalt-based catalyst and a preparation method thereof, and belongs to the technical field of metal catalysts. The preparation method of thecobalt-based catalyst comprises the steps: (1) dissolving Co(NO3)2.6H2O in an absolute ethyl alcohol solution; (2) immersing a mesoporous carbon material GMC into the solution obtained in the step (1), and evaporating in a rotary evaporator to obtain a mixture; and (3) putting the mixture obtained in the step (2) into a drying oven, and drying; and calcining to obtain the catalyst. The catalyst provided by the invention is higher in graphitization degree, more uniform in CoO particle dispersion, higher in CO conversion rate, lower in CO2 generation rate and better in C5+ selectivity.
Owner:CHANGZHOU INST OF TECH
A hydrogenation catalyst and a preparation method thereof
ActiveCN109718796ALarge apertureLarge hole volumeMetal/metal-oxides/metal-hydroxide catalystsRefining to eliminate hetero atomsMicroreactorSurface phase
The invention discloses a hydrogenation catalyst and a preparation method thereof. A reaction system adopted for preparation of the hydrogenation catalyst comprises N micro-reactors connected in series, the first micro-reactor is an impinging stream reactor, acidic and alkaline materials enter the first micro-reactor for a neutralization reaction, and products sequentially enter the second micro-reactor to the (N-1)th micro-reactor with the pH value swing, wherein the reaction temperature is 20-30 DEG C lower than that of the first micro-reactor when the pH value swings towards the alkali sidewhile the reaction temperature is 20-30 DEG C higher than that of the first micro-reactor when the pH value swings towards the acid side, and the obtained reaction product enters the Nth micro-reactor to be subjected to an aging reaction and is roasted to obtain the hydrogenation catalyst. The acidic material is an acidic aluminum salt solution and an acidic active metal solution, and the alkaline material is an alkaline aluminate solution and an alkaline active metal solution. The hydrogenation catalyst prepared by the method is relatively large in pore diameter and pore volume, uniform in grain size and high in catalyst surface phase active metal density, eliminates an amplification effect, and is suitable for being applied to hydrodesulfurization and denitrification processes of residual oil.
Owner:CHINA PETROLEUM & CHEM CORP +1
Supported cobalt-based catalyst for Fischer-Tropsch synthesis, and preparation method and application thereof
InactiveCN106582753AHigh mechanical strengthImprove thermal conductivityHeterogenous catalyst chemical elementsLiquid hydrocarbon mixture productionCobalt(II,III) oxideUltimate tensile strength
The invention provides a supported cobalt-based catalyst for Fischer-Tropsch synthesis. The supported cobalt-based catalyst is composed of cobaltosic oxide, an oxide of a precious-metal aid, an oxide of a non-precious-metal aid and a tungsten carbide carrier in a weight ratio of (10-80): (0-3): (0-20): 100. The supported cobalt-based catalyst has the advantages of high mechanical strength and good thermal conductivity.
Owner:中科潞安能源技术有限公司
Petroleum coke-based activated carbon and preparation method thereof
ActiveCN111377444ARich in microporesConcentrated pore size distributionCarbon compoundsActivated carbonPhysical chemistry
The invention discloses petroleum coke-based activated carbon and a preparation method thereof. The activated carbon has a specific surface area of 2000-3500m<2> / g, a pore volume of 0.8-1.5 cm<3> / g, an iodine adsorption value of 2000-3000mg / g and a methylene blue adsorption value of 300-650mg / g. The preparation method comprises the following steps: introducing ammonium phosphate into petroleum coke, drying and then pretreating; mixing the obtained sample with an activating agent, activating after uniformly mixing, and finally washing and drying to obtain the activated carbon. The activated carbon has the advantages of high specific surface area, high pore volume, centralized pore size distribution, excellent adsorption performance and the like, and is low in production cost and small in environmental pollution.
Owner:CHINA PETROLEUM & CHEM CORP +1
Wave-absorbing material based on recycling of agricultural and forestry wastes and preparation method thereof
ActiveCN111704134AGood dielectric loss capabilityImprove microwave absorption performanceCarbon compoundsFreeze-dryingPorous carbon
The invention relates to a wave-absorbing material, in particular to a wave-absorbing material based on recycling of agricultural and forestry wastes and a preparation method thereof. According to thematerial, forestry and agricultural wastes (including walnut shells, shiny-leaved yellowhorn shells and the like) are taken as raw materials, a finished porous carbon wave-absorbing material can be obtained through four steps including crushing, sieving and early-stage washing preparation of the raw materials, ultrasonic activation pretreatment, staged heating carbonization treatment and freeze drying treatment, and the purpose of microwave absorption is achieved by utilizing the structural characteristics of the materials. The wave-absorbing material is good in wave-absorbing performance; the agricultural and forestry wastes are used as the raw materials, so traditional agricultural and forestry wastes are allowed to produce high value, wasting of biomass is reduced, and environmental pollution is avoided. The wave-absorbing material has the advantages of low material cost, no pollution in preparation and high product performance, accords with the concept of sustainable development,provides a scheme for resource utilization of the agricultural and forestry wastes, enriches the types of wave-absorbing materials, and provides technical support for promotion of the wave-absorbing materials.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY
ZrO2-SiO2 compound oxides, its preparation method and application
ActiveCN101007268AConcentrated pore size distributionLarge specific surface areaCatalyst activation/preparationHydrocarbonsAcid strengthToluene
A ZrO2 - SiO2 composite oxides includes 85~98 wt% ZrO2 and 2-15wt% SiO2, the most probable aperture is 3-8nm and at least diameter of 90% hole is 3~8 nm, hole structure is the cylinder-shaped hollow structure; and the specific surface area of BET is 120 to 150 m 2 / g, the index H0 of acid strength Hammet is -8.4--5.6. Said preparation method of ZrO2 - SiO2 includes: adding silicon-containing compound and surface activator into zirconium-containing compound solution under the condition of continuous stirring to form mixture, then adding alkaline solution into said mixture under the condition of continuous stirring to form sol, after ageing, washing and filtering the sol and preparing gel, then producing the ZrO2 - SiO2 solid after drying and roasting gel. The activator using the composite oxide as carrier is used for transfer reaction of pseudocumene and toluene alkyl group and has higher pseudocumene conversion rate and better dimethylbenzene selective.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method of TiO2/Al2O3 composite carrier
The invention relates to a preparation method of a TiO2 / Al2O3 composite carrier, which relates to a preparation method of a general carrier of a catalyst. The preparation method of the TiO2 / Al2O3 composite carrier comprises the following steps of: firstly, dissolving butyl titanate in absolute ethyl alcohol; stirring the solution, and adding glacial acetic acid to the solution; standing the solution, then adding deionized water into the solution, and then carrying out heat treatment on the solution; and after the deionized water is added to the solution, slowly adding gamma-Al2O3 powder to the solution, and then performing heat treatment on the solution. The TiO2 / Al2O3 composite carrier prepared through the method has large specific surface area and pore volume and can ensure that pore diameter distribution is more concentrated; and TiO2 in the TiO2 / Al2O3 composite carrier is not subjected to a local concentration phenomenon and is greatly uniformly dispersed on the surface of Al2O3.
Owner:SHAANXI HI TECH ENERGY DEV
Preparation method of iron or copper oxide pillared layered manganese oxide low-temperature denitration catalyst
ActiveCN108067247AGood low temperature denitrification activityImprove sulfur resistanceGas treatmentDispersed particle separationFiltrationCopper oxide
The invention provides a preparation method of an iron or copper oxide pillared layered manganese oxide low-temperature denitration catalyst. The method mainly uses a shared precursor method. Throughhydroxide preparation, hydroxide oxidization, suction filtration and washing, drying and roasting preparation, the iron or copper oxide pillared layered manganese oxide low-temperature denitration catalyst is obtained. The low-temperature denitration catalyst has the advantages that the active temperature window is low; the denitration efficiency is high; the method is applicable to the SCR (selective catalytic reduction) method low-temperature denitration technology.
Owner:海南中盛旭鑫低碳科技有限公司
Method for large-scale preparation of mesoporous silica
The invention discloses a method for large-scale preparation of mesoporous silica. The method comprises the steps of 1, mixing of coal ash and auxiliaries containing calcium and sodium, 2, grinding, 3, high-temperature treatment, 4, controllable corrosion and 5, drying so that the mesoporous silica can be obtained. The method effectively achieves the purpose of disposal of coal ash of a thermal power generation plant, and a novel scheme is provided for comprehensive utilization and high value-added utilization of coal ash; the adopted raw materials are low in price, and the synthesis cost is low; the synthesis process is simple and easy to implement industrially, and the great industrial potential is achieved; the synthetized mesoporous silica has the large specific surface area and the pore volume, the pore size distribution is relatively concentrated, and the wide application prospect is achieved in the chemical engineering fields such as adsorption and catalysis.
Owner:华东理工常熟研究院有限公司
Soft high-temperature-resistant polypropylene foam material and preparation method thereof
The invention discloses a soft high-temperature-resistant polypropylene foam material and a preparation method thereof. The soft high-temperature-resistant polypropylene foam material comprises 100 parts of co-polypropylene resin, 10-20 parts of polyolefin block copolymer resin, 5-15 parts of high-density polyethylene resin, 1-3 parts of low-molecular-weight polytetrafluoroethylene and 1-4 parts of a foaming agent. The method comprises the following steps of: melting and mixing copolymerized polypropylene resin, polyolefin block copolymer resin, high-density polyethylene resin, a foaming agentand low-molecular-weight polytetrafluoroethylene, and extruding from an extruder to obtain a sheet; and sequentially feeding the cross-linked sheet into a preheating section, a foaming section and acooling shaping section of equipment for foaming to obtain the foam material. The soft high-temperature-resistant polypropylene foam material is low in compression set and low in compression strength,so that the foam material is soft enough; meanwhile, under the high-temperature condition, the heat-resistant dimension change rate (transverse / longitudinal) reaches -0.8% / -1.4%, and the foam material has both softness and heat resistance.
Owner:HUBEI XIANGYUAN NEW MATERIAL TECH INC
Preparation method of activated wood carbon fiber
InactiveCN109797461AIncrease profitThe process steps are simpleFibre chemical featuresCelluloseFiber
The invention provides a preparation method of an activated wood carbon fiber. The preparation method of the activated wood carbon fiber comprises immersing wood into phosphate solution, then drying the immersed wood, and performing carbonization under protection of nitrogen and then activation with vapor to obtain the activated carbon fiber. By taking word processing residues as the raw materialand directly performing carbonization and activation directly without processes of extraction of cellulose or lignin to obtain the activated carbon fiber, the preparation method of the activated woodcarbon fiber is simple and rapid in preparation processes and low in production cost; the prepared activated carbon fiber is large in specific surface area and applicable to wastewater adsorption.
Owner:WUHAN INSTITUTE OF TECHNOLOGY +1
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
Hydrocracking catalyst and preparation method thereof
ActiveCN107344102AThe skeleton structure is stable and perfectElimination of non-skeletal structuresMolecular sieve catalystsHydrocarbon oil crackingMolecular sieveNaphtha
The invention discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst takes a modified Y-type molecular sieve which contains rich mesopores and has intensive effective pore diameter distribution as an acidic component; the modified Y-type molecular sieve has the following characteristics: the relative crystallization degree is 110 percent to 150 percent, the mol ratio of SiO2 / Al2O3 is 10 to 50, the lattice parameter is 2.436nm to 2.445nm, the total pore volume is 0.55mL / g to 1.0mL / g and the mesopore pore volume accounts for 70 percent of the total pore volume or more. The hydrocracking catalyst disclosed by the invention is suitable for being used in a hydrocracking process of increasing the yield of high-quality heavy naphtha and has relatively high catalytic activity and product selectivity.
Owner:CHINA PETROLEUM & CHEM CORP +1
Modified carbon-coated alumina supporter with nucleocapsid structure and preparation method thereof
InactiveCN101327454BLarge specific surface areaLarge hole volumeCatalyst carriersCatalyst activation/preparationOil processingModified carbon
Owner:EAST CHINA UNIV OF SCI & TECH
A kind of modified activated carbon and preparation method and application thereof
ActiveCN106362719BIncrease the number ofGood dispersionMetal/metal-oxides/metal-hydroxide catalystsBulk chemical productionActivated carbonPtru catalyst
The invention provides a modified activated carbon, a preparation method and an application, belonging to the field of preparation of catalyst carriers. The preparation method is as follows: a graphitized activated carbon is treated with HNO 3 After treatment, high-temperature heat treatment is performed in an ammonia atmosphere to obtain an activated carbon carrier with high mesopores. The carrier has the characteristics of large pore volume, high mesoporosity (≥97%), and good conductivity. When used as a catalyst carrier for ammonia synthesis, it can significantly improve the dispersion of the precious metal ruthenium and improve the methanation resistance, thermal stability and activity of the catalyst. It has broad application prospects in the field of catalysis.
Owner:FUZHOU UNIV
A kind of hydrocracking method of inferior diesel oil
ActiveCN107345154BGood product selectionSuitable for acidityMolecular sieve catalystsHydrocarbon oil crackingMolecular sieveGasoline
The invention discloses a hydrocracking method for inferior diesel oil. The method comprises the steps of subjecting inferior diesel oil feedstock and a hydrocracking catalyst to contact, carrying out a hydrocracking reaction, and subjecting the obtained hydrocracking product to separation, thereby obtaining a gasoline fraction and a diesel fuel fraction, wherein modified Y molecular sieves serve as the hydrocracking catalyst and have the following properties: the relative crystallinity is 110% to 150%, the SiO2 / Al2O3 mole ratio is 10 to 50, the unit cell parameter is 2.436nm to 2.445nm, the total pore volume is 0.55mL / g to 1.0mL / g, and the pore volume of mesopores accounts for 70% or more of the total pore volume. The method can be used for effectively converting fractions of the inferior diesel oil to produce superior-quality gasoline and high-quality diesel fuel products.
Owner:CHINA PETROLEUM & CHEM CORP +1
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