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Collagenolysis and regeneration method
InactiveCN101838397ASimple stepsImprove securityMonocomponent protein artificial filamentConnective tissue peptidesFiberLysis
The invention relates to a collagenolysis and regeneration method, aiming at providing a simple and convenient collagenolysis method; meanwhile, the invention further provides a method which leads the lysis collagen to regenerate membranes, fibers, microballoons or powdery products. In order to realize the purpose, the invention adopts the following technical proposal: in the collagenolysis method, ionic liquid is utilized as solvent for collagen lysis, and the ionic liquid is alkyl imidazoles, including 1-methyl-3-butyl halogenated imidazole, 1-butyl-3-methyl halogenated imidazole, 1-ethyl-3-methyl halogenated imidazole and 1-allyl-3-methyl halogenated imidazole or halide (3,3-dimethyl) diimidazole sulfoxide salt. In the collagen regeneration method, the collagenolysis method is utilized to prepare collagen / ionic liquid solution, and then coagulators are utilized to wash out the ionic liquid in the solution, and then the regeneration collagen is obtained. In the collagenolysis and regeneration method, the steps are simple, nontoxic and harmless, and have high safety, thereby establishing good basis for research and application and dissemination of the collagen products.
Owner:ZHENGZHOU UNIV
Waste plastic, montmorillonoid and waste rubber composite and preparation method thereof
InactiveCN101717536AHigh strengthImprove toughnessPigment treatment with non-polymer organic compoundsParaffin waxPentaerythritol
The invention discloses a waste plastic, montmorillonoid and waste rubber composite and a preparation method thereof. According to a formula, the composite is prepared from the following raw materials in part by weight: waste plastic 70-120, montmorillonoid 20-50, waste rubber powder 5-15, stearic acid 0.1-2, paraffin wax 2-5, antioxidant(beta-(3,5-di-tert-butyl-4-hydroxyphenyl)- pentaerythritol ester 0.05-1, wherein the montmorillonoid subjected to organic intercalation, dehydration and deoxidation has a cation exchange total capacity of 50 to 200meg / 100g and a particle size of 40 to 100mum. In the invention, the waste plastic and rubber are added with a small amount of total montmorillonoid to develop a product with a high added value, so the pollution is reduced, resource recycling is realized and the product can replace all wooden templates and some steel templates.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method and application of microwave-assisted magnetic hollow Zn/Co zeolite imidazole nanocage material
ActiveCN110237820ASimple processLow costOther chemical processesWater contaminantsAntibiotic YChemical stability
The invention discloses a preparation method of a microwave-assisted magnetic hollow Zn / Co zeolite imidazole nanocage material. The preparation method comprises the steps: adopting Nano Fe3O4 as a seed crystal, adding cobalt nitrate hexahydrate and 2-methylimidazole and zinc nitrate hexahydrate successively, performing rapid self-assembly based on seed crystal induction so as to form a double-shell Zn / Co-ZIF crystal and form a magnetic double-shell nano crystal Fe3O4@ZIF-67@ZIF-8, utilizing methanol to absorb the microwave energy under the assistance action of microwaves, and transferring energy quickly to an inner shell ZIF-67 with poor chemical stability so as to bring vibration and cracking of metal organic skeleton ZIF-67 bonds, achieve etching of the inner shell and obtain Fe3O4@Zn / Co-ZIF. The material has a hollow cage-shaped morphology, a large specific surface area, a complete crystal form, multiple pores, high chemical stability and good magnetic properties for convenient magnetic separation. The material has an efficient and high-throughput adsorption for antibiotic quinolone drugs, has another advantage of easy separation from the antibiotic quinolone drugs, can be regenerated and reused at least 8 times, has excellent reproducibility, and has easy realization of high-efficiency removal of high-residue quinolone antibiotics in a large-scale water environment.
Owner:NINGXIA UNIVERSITY
Environment-friendly catalyst for preparing propylene by directly dehydrogenating propane and preparation method thereof
ActiveCN110801861AGood stability and activityGood thermal stability at high temperatureMolecular sieve catalystsMolecular sieve catalystMolecular sievePtru catalyst
The invention belongs to the field of catalysts, and particularly relates to an environment-friendly catalyst for preparing propylene by directly dehydrogenating propane and a preparation method of the catalyst, wherein the particle size of the catalyst is 40-150 [mu] m; the catalyst comprises 30%-70% of a Zn-doped Hbeta molecular sieve, 15%-50% of Al2O3 and 3%-30% of a multi-element active modifier, wherein the modifier comprises at least one element of W, Mo, Mn, Zr, Ni, Fe and Co as a first modifier, at least one element of Ga, In, P, La and Ce as a second modifier, and any one element of Sr, Ba, Ca, Mg, Na and Li as a third modifier, and the sum of the mass percentages of oxides of all the element components is 100%. The prepared fluidized bed dehydrogenation catalyst is low in cost and good in wear resistance, and has good dehydrogenation activity and stability when used for propane dehydrogenation.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND
Chitosan modified diatom-based As (V) ion imprinting material and preparation and application methods thereof
InactiveCN109364893ALarge specific surface areaImprove plasticityOther chemical processesWater contaminantsFunctional monomerHigh density
The invention provides a preparation method of a chitosan modified diatom-based As (V) ion imprinting material (IIP) and belongs to the field of ion imprinting materials. The chitosan modified diatom-based As (V) ion imprinting material takes diatom surface modifying chitosan as carriers and functional monomers and gamma-glycidyloxypropyltrimethoxysilane as crosslinking agent to prepare an As (V)identifiable absorbent. Diatom has absorptive properties and a large quantity of electronegative active sites on the surface, thereby being high in plasticity; DGTMS molecules can be polycondensated with Si-OH on the surface of the diatom and meanwhile has epoxy groups applicable to reaction with -NH2 on chitosan molecules; through covalent bond connected crosslinking reaction between the DGTMS and amino of the chitosan molecules, the DGTMS can be hydrolyzed for self-condensation and hydro-condensated with the Si-OH groups on the surface of the diatom for covalent bond connection, and the epoxy groups are ring-opened and covalent-crosslinked with the amino of the chitosan to form a high-density net-structured polymer.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Nanometer lignocellulose/montmorillonite composite material and preparation and application thereof
ActiveCN107987290AImprove performanceGood chemical compatibilityOther chemical processesWater contaminantsIonNanometre
The invention provides a nanometer lignocellulose / montmorillonite composite material and preparation and application thereof. The nanometer lignocellulose / montmorillonite composite material is an intercalation / stripping type nanometer composite material, and is compounded by nanometer lignocellulose and montmorillonite according to a mass ratio of 1:(1 to 10); the nanometer lignocellulose is intercalated into sheets of montmorillonite. The nanometer lignocellulose / montmorillonite composite material has the advantages that the nanometer lignocellulose / montmorillonite composite material is a novel heavy metal ion wastewater absorbent with low cost, good biocompatibility and high efficiency; the preparation method is simple, the regeneration property is good, the environment-friendly effect is realized, and the like; the obvious affinity and adsorption selectivity on the heavy metal ions in the wastewater are realized.
Owner:INNER MONGOLIA AGRICULTURAL UNIVERSITY
Improved carageenan-chitosan polyelectrolyte microspheres as well as preparation method and application thereof
InactiveCN106362703AHigh densityImprove adsorption capacityOther chemical processesWater contaminantsPolyelectrolyteMicrosphere
The invention belongs to the field of organic materials, particularly relates to an improved carageenan-chitosan polyelectrolyte microspheres as well as preparation method and application thereof, and aims to solve the technical problems of insufficient metal ion adsorption capacity, slow adsorption speed, low elution possibility and narrow application range of existing chitosan. The scheme for solving the technical problems is to provide the improved carageenan-chitosan polyelectrolyte microspheres. The invention also provides the preparation method and the application of the improved carageenan-chitosan polyelectrolyte microspheres.
Owner:SICHUAN UNIV
Metalworking fluids filtration system
ActiveCN103555411ASuitable for different environmentsEasy to useLubricant compositionMetalworking fluidFiltration
The invention relates to a metalworking fluids filtration system. The filtration system comprises a box body, equipment arranged in the box body and a bottom support, wherein the equipment in the box body includes a vacuum filtration system, a precision filtration system, a fluid storage system, a pumping system and an intelligent control system; the fluid storage system comprises a first fluid storage box and a second fluid storage box; the pumping system comprises a first pumping system and a second pumping system; the first fluid storage box is connected with a first drug bucket by fluid purification and sterilization equipment; the second fluid storage box is connected with a second drug bucket; sterilization drugs are filled in the second drug bucket and are finally output by the second pumping system to be recycled. The filtration system can purify cutting fluid periodically and continuously, not only better maintain the usability of the cutting fluid but also prolong the service life of the cutting fluid by many times, carry out quick filtration and efficient operation and achieve the aims of safety, environment-friendliness, saving and emission reduction at minimal cost.
Owner:昆山辰芳环保科技有限公司
Electrode composite material, preparation method of electrode composite material, as well as negative electrode and battery with electrode composite material
ActiveCN104425801ALow costWith mass productionMaterial nanotechnologyCell electrodesNanostructureLithium-ion battery
The invention provides an electrode composite material which comprises a M13 bacteriophage and Mn3O4. The electrode composite material has a good nano structure and a good electrochemical performance, and can be used as a negative electrode material of a lithium ion battery; moreover, a preparation method of the electrode composite material is simple and feasible, and can be implemented at low temperature. The invention also provides the preparation method of an electrode composite material, and a negative electrode and a battery which comprise the electrode composite material.
Owner:POSITEC POWER TOOLS (SUZHOU) CO LTD +1
Method for preparing nano-scale reproducible antibacterial medical porous titanium-magnesium skeleton material
The invention relates to block-shaped nano-scale antibacterial medical porous titanium-magnesium skeleton material and a preparation method thereof and particularly relates to a method for preparing anano-scale producible antibacterial medical porous titanium-magnesium skeleton material through the combination of a high-pressure torsion method and a powder metallurgy method. The mass fraction ratio of magnesium to zinc to calcium to potassium to silver to silicon to phosphorus in the skeleton material is (12%-16%) to (0.1%-0.4%) to (2.5%-3.2%) to (0.5%-0.8%) to (0.8-1.4%) to (23%-27%) to (0.5%-1.3%), and the rest is metallic titanium. The method comprises the following steps: determining the weight of metal powder in a single torsion pressure process at 20g-500g; adjusting the following parameters in the torsion pressure process: the torsion torque of a torsion head is 800Nm-1500Nm, the rotation speed of the torsion head is 1r / min-5r / min, the single torsion pressure time is 10-30 minutes, and the torsion pressure number of times is 2-6; adding a proper amount of a 4% sodium hydroxide solution, and carrying out chemical corrosion for forming holes; and heating to 380-400 DEG C, andsintering. The material prepared by virtue of the method can be used as a medical skeleton material.
Owner:SHANDONG JIANZHU UNIV
Calcium ion imprinted chitosan adsorbent, and preparation method and applications thereof
InactiveCN110090627APromote degradationGood biocompatibilityOther chemical processesWater contaminantsCross-linkSorbent
The invention discloses a calcium ion imprinted chitosan adsorbent, and a preparation method and applications thereof. The method includes adding chitosan into an acetic acid solution to obtain a chitosan solution through uniform mixing; adding acrylic acid, a template agent and an initiator into the chitosan solution, and performing heating stirring under the protective atmosphere so that a mixedliquor can be obtained; adding a glutaraldehyde solution into the mixed liquor, and performing uniform mixing, heating treatment, centrifugation and sediment taking, washing and drying; and performing elution treatment on the sediment so that the calcium ion imprinted chitosan adsorbent can be obtained. The method prepares the modified chitosan nano adsorbent with strong mechanical strength and good adsorption performance by taking calcium ions as a template, taking glutaraldehyde as a cross-linking agent and taking acrylic acid as a grafting agent. The provided imprinted chitosan adsorbent has advantages of being simple in preparation, uniform in particle sizes of the adsorbent, large in specific surface area, good in adsorption effect and strong in target ion selectivity, and can be desorbed, regenerated and reused; and the imprinted chitosan adsorbent can effectively realize the removing of heavy metal ions.
Owner:SOUTH CHINA UNIV OF TECH
Ecological restoration method of zinc-cadmium heavy metal contaminated soil
InactiveCN107737805AHigh biomass energyCultivation is simpleContaminated soil reclamationRestoration methodRoot growth
The invention discloses an ecological restoration method of zinc-cadmium heavy metal contaminated soil. The mode of moso bamboo and sedum plumbizincicola intercropping is adopted, the root growth layers of the two plants are crossed, thus the obvious nutrient competition relation does not exist, the root depths of the two plants are different, and thus the characteristics of fertilizers needed bythe two plants are also different. The root of the sedum plumbizincicola is generally located on the soil surface layer, when the depth of the contaminated soil reaches 30-40 cm, zinc-cadmium heavy metal in the soil cannot be absorbed by the root of the sedum plumbizincicola, but the depth of the root of the moso bamboo can reach 30-40 cm and conduct heavy metal ecological restoration on the soilbelow the surface layer of the contaminated soil.
Owner:INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
Thiosemicarbazide functionalized graphene oxide/chitosan composite adsorbent as well as preparation method and application thereof
ActiveCN113083238AEvenly dispersedEasy to prepareOther chemical processesWater contaminantsEthylic acidAcetic acid solution
The invention discloses a thiosemicarbazide functionalized graphene oxide / chitosan composite adsorbent as well as a preparation method and application thereof. The method comprises the following steps: dispersing chitosan in an acetic acid solution; dispersing the graphene oxide in water, and then adding the obtained dispersion into the chitosan dispersion liquid; adding thiosemicarbazide into the dispersion liquid, performing stirring treatment, then adding glutaraldehyde into the dispersion liquid, and reacting under stirring; and adding the mixed solution into a NaOH solution while stirring, centrifuging, washing and drying to obtain the adsorbent. The functionalized graphene oxide / chitosan composite adsorbent provided by the invention has the characteristics of simplicity in preparation, high yield, adsorption selectivity to Hg<2+>, easiness in separation and recovery and the like. The modified graphene oxide / chitosan composite adsorbent can effectively adsorb and remove heavy metal ions.
Owner:SOUTH CHINA UNIV OF TECH
PLA-based degradable adhesive tape
InactiveCN114015369AGood thermal propertiesPromote degradationProtein adhesivesFilm/foil adhesivesPolymer scienceAdhesive
The invention discloses a PLA-based degradable adhesive tapewhich comprises a release layer, a base material layer and an adhesive layer; the base material layer is prepared from the following raw materials: PLA (polylactic acid), PBAT (butylene adipate-terephthalate) copolymer, starch, nano cellulose, a plasticizer, a cross-linking agent and a stabilizer; the release layer is prepared from a raw material containing silicone oil; and the adhesive layer is prepared from a degradable adhesive. The produced packaging material belongs to a degradable product, is green and environment-friendly and has good water resistance and flexibility, the step of removing an adhesive tape is omitted when a carton using the adhesive tape is recycled, and the recycling cost of the carton is reduced.
Owner:ZHEJIANG GREAT SHENGDA PACKING CO LTD
Inner mold for molding glass and its regeneration process
InactiveCN1673133AImprove molding lifeImprove adhesionGlass pressing apparatusGlass press-moulding apparatusTectorial membraneMaterials science
The present invention discloses inner mold for molding glass and its easy regeneration process. The inner mold includes the bottom material, the first noble metal layer on the bottom material, the second noble metal layer on the first noble metal layer, the carbon-containing third noble metal layer on the second noble metal layer, and diamond carbon-like protecting layer on the third noble metal layer. The carbon-containing noble metal layer connects the diamond carbon-like protecting layer can increase the adhesion between the protecting film and the bottom material, the carbon atom in the middle layer can inhibit the growth of crystal grain in the noble metal film, and the noble metal layers in compact structure can prevent the bottom material components from diffusing to the protecting film. Using carbon-containing noble metal layer can raise the regeneration performance of the inner mold.
Owner:ASIA OPTICAL CO INC
Injection molded article of fiber-reinforced polylactic acid resin
InactiveCN101688054AHigh mechanical strengthExcellent mechanical strength (especially impact resistanceCoatingsPhosphoric Acid EstersPolymer science
Disclosed is an injection molded article of a fiber-reinforced polylactic acid resin, which is excellent in mechanical strength, flame retardancy and recyclability. Specifically disclosed is an injection molded article of a fiber-reinforced polylactic acid resin having an average plate thickness of 2.0 mm or more, which is characterized by being obtained by injection molding a resin composition containing the following components (1)-(3). (1) not less than 50 parts by mass of a polylactic acid resin (2) 10-25 parts by mass of a petroleum fiber having a melting point of 200-300 DEG C (3) 2-10 parts by mass of a monomeric phosphate ester.
Owner:FUJIFILM CORP
New-type wood adhesive and preparation method thereof
InactiveCN109666444AHigh Lap Shear StrengthShort curing timeNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesPolymer scienceVegetable oil
The invention belongs to the technical field of new materials, and particularly relates to a new-type wood adhesive and a preparation method thereof. The new-type wood adhesive is formed by a main adhesive and a cross-linking agent, wherein the main adhesive comprises the following raw materials in parts by weight: 12-16 parts of polyether glycol, 20-25 parts of silica sol, 8-12 parts of polyvinylalcohol, 0.2-0.4 parts of propylene glycol, 4-6 parts of polymerized diphenylmethane diisocyanate, 0.04-0.06 parts of polyacrylamide, 0.12-0.16 parts of dibutyltin dilaurate, 0.05-0.2 parts of a surfactant, 0.05-0.15 parts of a defoamer, 0.1-0.2 parts of a preservative, 8-15 parts of filler and 50-65 parts of water; and the cross-linking agent is formed by the following raw materials in parts byweight: 6-8 parts of vegetable oil, 20-30 parts of polyol benzoate and 65-75 parts of isocyanate. The preparation method is capable of using glycerinum as an initiator for preparing the polyether glycol, and using the polyether glycol as the raw material for preparing the new-type wood adhesive. The prepared new-type wood adhesive has the characteristics of high bonding strength, short curing time, good water resistance and weather resistance and environment-friendliness, and has a value of large-scale promotion.
Owner:合肥易美特建材有限公司
Preparation method of hydrophobic antibacterial ceramic membrane
InactiveCN112679230AVisible light catalytic effect is goodImprove antibacterial propertiesAntifouling/underwater paintsPaints with biocidesMicroorganismSuspended matter
The invention discloses a preparation method of a hydrophobic antibacterial ceramic membrane. The preparation method comprises the following steps: S1, cleaning a ceramic membrane; S2, preparing a cuprous oxide / fluorosilicone modified hydrophobic antibacterial modification solution; S3, putting the ceramic membrane obtained in the step S1 into the modified hydrophobic antibacterial modification solution obtained in the step S2, dipping and adsorbing for 3-5 minutes, and lifting upwards at the speed of 750-1000 [mu]m / s, so as to enable the hydrophobic antibacterial modification solution to flow out from one end of the ceramic membrane; and S4, drying and curing the ceramic membrane obtained in the S3 at the temperature of 40-50 DEG C to obtain the hydrophobic antibacterial ceramic membrane. The cuprous oxide / fluorosilicone modified hydrophobic antibacterial modification solution is used for surface treatment of the ceramic membrane for the first time, so that the ceramic membrane is endowed with excellent hydrophobic, oleophobic, antifouling and antibacterial properties; the aggregation amount of organic suspended matters, colloids, microorganisms and the like on membrane pore passages or the surface of the membrane is effectively reduced.
Owner:蚌埠泰鑫材料技术有限公司
Composite carrier catalyst for preparing propylene by adopting propane conversion and preparation method of composite carrier catalyst
ActiveCN109647494ACurb churnSuppress generationMolecular sieve catalystsCatalyst activation/preparationMolecular sieveActive component
The invention discloses a composite carrier catalyst for preparing propylene by adopting propane conversion and a preparation method for the composite carrier catalyst. The catalyst is prepared from 50%-90% of Al-doped SBA-15 molecular sieves, 10%-40% of iota-Al2O3, 0.1%-0.6% of an active component, 0.1%-4.0% of modifiers and the balance adhesive. The modifier comprises a first modifier containingany one of Cu and Sn modified elements, a second modifier containing any one of La, Ce, Ag and Zr modified elements, and a third modifier containing any one of Sr, Ba, Ca and K modified elements, thecontent of each modifier is greater than 0%, and the mass percentage sum of all the components is 100%. The catalyst is good in intensity, and has good dehydrogenation activity and stability in the process of propane dehydrogenation.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND
Method for synthesizing dialkyl carbonate from biomass-based furfural
InactiveCN109320419AIncrease added valueReduce pollutionOrganic compound preparationCarboxylic compound preparationDicaprylyl carbonateSynthesis methods
The invention belongs to a synthesis method of an ester type compound in organic chemistry and in particular relates to a method for synthesizing dialkyl carbonate from biomass-based furfural. The method comprises the following steps: firstly, taking agricultural and forest wastes as initial raw materials, carrying out acid hydrolysis and dehydration cyclization reaction and purifying to obtain furfural; carrying out oxidization reaction on the biomass-based furfural under the action of hydrogen peroxide and a catalyst to synthesize maleic anhydride; carrying out epoxidation reaction on the synthesized maleic anhydride under the action of the catalyst and the hydrogen peroxide to synthesize epoxysuccinic acid; carrying out cycloaddition reaction on the epoxysuccinic acid and CO2 to prepareannular carbonate; finally, carrying out ester exchange reaction on the synthesized annular carbonate and monohydric alcohol or polyhydric alcohol to prepare the dialkyl carbonate. According to the method provided by the invention, the cheap agricultural and forest wastes are used as the raw materials to produce the dialkyl carbonate; meanwhile, tartaric acid with high additional value is also produced; the production cost is saved and the environment pollution is reduced; a novel way is also provided for industrial production of the dialkyl carbonate and the tartaric acid and efficient and comprehensive utilization of the agricultural and forest wastes; the synthesis method has remarkable economic benefits and social benefits.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Method for preparing adsorbent from straw
InactiveCN110898814AImprove adsorption capacityHigh porosityOther chemical processesWater contaminantsBiotechnologySorbent
The invention discloses a method for preparing an adsorbent from straw, belonging to the technical field of straw utilization. The adsorbent prepared from corn straw and the like has a good adsorptioneffect on heavy metal ions such as Cd (II), Pb (II) and the like, and is high in desorption rate and high in reproducibility. According to the invention, sesame stalks, clamshells and corn stalks arepuffed after being activated by steam, so the inner structure of the above raw materials can be completely opened, which is beneficial for complete immersion of yeast liquid; then fermentation is performed, the fermented raw materials have porous structures and improved porosity; and carbonization is cooperatively conducted to harden a skeleton structure, so the obtained adsorbent has the characteristics of good porosity, good specific surface area, good mechanical properties and improved regeneration performance.
Owner:安徽正基生态农业有限公司
Composite molecular sieve as well as preparation method and application thereof
PendingCN114367304AGood dispersionLarge active surface areaMolecular sieve catalystsHydrocarbonsMolecular sieveAlkane
The invention provides a composite molecular sieve which is composed of transition metal and a molecular sieve, and the transition metal exists in a molecular sieve framework in a monodisperse tetrahedral coordination form. The composite molecular sieve provided by the invention is a transition metal composite molecular sieve containing a single-site framework confinement. The invention also provides a preparation method of the low-carbon olefin. According to the preparation method, low-carbon alkane is dehydrogenated on the catalyst to generate the low-carbon olefin and hydrogen. Experiments prove that the selectivity of the low-carbon olefin prepared by the method disclosed by the invention can reach 99.9%. The method is simple in process and simple and convenient in reaction equipment; the composite molecular sieve catalyst has the advantages of acid and alkali resistance, oxygen and sulfur resistance, water resistance, carbon deposition resistance, long service life, high reaction activity and product selectivity, and suitableness for industrial production.
Owner:UNIV OF SCI & TECH OF CHINA
Preparation method of aluminum oxide/mullite composite super-hydrophobic powder
The invention discloses a preparation method of aluminum oxide / mullite composite super-hydrophobic powder. The method comprises the following concrete steps: (1) adding concentrated sulfuric acid into Al2O3 powder, mechanically or ultrasonically stirring at 25-70 DEG C for 30-120 minutes, and performing washing, suction filtration and drying to obtain preprocessed Al2O3 powder; (2) mixing the preprocessed Al2O3 powder with silicon-containing raw materials, B2O3 and fused salt; (3) drying a mixture obtained from the step (2), calcining in a ceramic crucible at 700-1000 DEG C, preserving heat for 1-5 hours after the calcining temperature is reached, taking out from the crucible, washing an obtained product by distilled water, and drying to obtain the aluminum oxide / mullite composite powder. According to the method, expensive equipment is not required, the aluminum oxide / mullite composite powder with a micro-nanostructure can be directly prepared through a very simple process, and the composite powder is good in dispersity and nearly free from agglomerates.
Owner:JIANGXI UNIV OF SCI & TECH
A kind of composite carrier catalyst for propane conversion to propylene and preparation method thereof
ActiveCN109647494BCurb churnSuppress generationMolecular sieve catalystsCatalyst activation/preparationMolecular sievePtru catalyst
The invention discloses a composite carrier catalyst for preparing propylene by adopting propane conversion and a preparation method for the composite carrier catalyst. The catalyst is prepared from 50%-90% of Al-doped SBA-15 molecular sieves, 10%-40% of iota-Al2O3, 0.1%-0.6% of an active component, 0.1%-4.0% of modifiers and the balance adhesive. The modifier comprises a first modifier containingany one of Cu and Sn modified elements, a second modifier containing any one of La, Ce, Ag and Zr modified elements, and a third modifier containing any one of Sr, Ba, Ca and K modified elements, thecontent of each modifier is greater than 0%, and the mass percentage sum of all the components is 100%. The catalyst is good in intensity, and has good dehydrogenation activity and stability in the process of propane dehydrogenation.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND
A method for synthesizing dialkyl carbonate from biomass-based synthesis gas
ActiveCN108727194BReduce pollutionRaw materials are easy to getWaste based fuelLiquid carbonaceous fuelsTrans esterificationPolyol
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
A kind of waste plastics, montmorillonite and waste rubber composite material and preparation method thereof
InactiveCN101717536BHigh strengthImprove toughnessPigment treatment with non-polymer organic compoundsPentaerythritolWaste rubber
The invention discloses a composite material of waste plastics, montmorillonite and waste rubber and a preparation method thereof. In parts by weight, the raw material formula of the composite material is: 70-120 parts of waste plastics, 20-50 parts of montmorillonite, 5-15 parts of waste rubber powder, 0.1-2 parts of stearic acid, 2-5 parts of paraffin, 0.05-1 part of antioxidant tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) pentaerythritol ester ; Montmorillonite has a total cationic exchange capacity of 50-200meg / 100g, particle size of 40-100 μm, and through organic intercalation treatment and dehydration deoxidation treatment. The present invention utilizes waste plastics and waste rubber, adding a small amount of montmorillonite to develop High value-added products can reduce pollution and realize the recycling of resources. The products can fully replace wooden formwork and partially replace steel formwork.
Owner:SOUTH CHINA UNIV OF TECH
Method for simultaneously preparing biosorbent and flocculant for heavy metal adsorption and product thereof
ActiveCN104587967BImprove adsorption capacityStrong renewableOther chemical processesWater contaminantsAluminium sulfateFlocculation
The invention discloses a method for synchronously preparing a biological adsorbent and a flocculant for heavy metal adsorption and products of the biological adsorbent and the flocculant, and belongs to wastewater treatment technologies. The method comprises the following steps: domesticating iron-oxidizing bacteria by using aluminum sulfate to obtain a target strain; then performing enlarged cultivation and centrifugal collection on the strain to obtain a lot of bacteria; and adding the bacteria into a ferrous sulfate and aluminum sulfate system to synthesize a nano-wire-scale iron-based heavy metal adsorbent and a polysilicate ferro-aluminum sulfate flocculant on the basis of a ferrous oxidation function and a biological template function of the bacteria. The bacterium co-preparation method is simple in process, is environment-friendly, is low in consumption, high in raw material utilization efficiency, and is suitable for adsorption and flocculation treatments of various types of wastewater.
Owner:CENT SOUTH UNIV
Preparation method and application of microwave-assisted magnetic hollow zn/co zeolite imidazole nanocage materials
ActiveCN110237820BSimple processLow costOther chemical processesWater contaminantsMetal-organic frameworkChemical stability
The preparation method of microwave-assisted magnetic hollow Zn / Co zeolite imidazole nano-cage material of the present invention uses nano-Fe 3 o 4 As seeds, cobalt nitrate hexahydrate, 2-methylimidazole and zinc nitrate hexahydrate were added successively. Based on the induction of seed crystals, double-shell Zn / Co-ZIF crystals were rapidly self-assembled to generate magnetic double-shell nanocrystals Fe 3 o 4 @ZIF‑67@ZIF‑8, with the assistance of microwaves, methanol absorbs microwave energy and quickly transfers the energy to the inner shell ZIF‑67 with poor chemical stability, causing vibration and cracking of metal organic framework ZIF‑67 bonds, The inner shell is etched to produce Fe 3 o 4 @Zn / Co‑ZIF. The material has a hollow cage shape, large specific surface area, complete and porous crystal form, high chemical stability and good magnetic properties to facilitate magnetic separation. The material exhibits efficient, high-throughput adsorption of antibiotic quinolones. Moreover, it is easy to separate from antibiotic quinolones, can be regenerated and reused, has excellent reproducibility, and is easy to achieve efficient removal of high-residue quinolone antibiotics in large-scale water environments.
Owner:NINGXIA UNIVERSITY
Electrogenerated chemiluminescence sensor with high sensitivity in cancer cell detection and fabrication method of sensor
InactiveCN103134793BAchieving Sensitive DetectionEasy to operateChemiluminescene/bioluminescenceCancer cellIonic liquid
Owner:HARBIN INST OF TECH
Antibacterial nano cuprous oxide/chitosan grafted polyacrylate emulsion as well as preparation method and application thereof
InactiveCN112724342AImprove hydrophobicityExcellent oleophobicAntifouling/underwater paintsPaints with biocidesEmulsionMeth-
The invention discloses an antibacterial nano cuprous oxide / chitosan grafted polyacrylate emulsion as well as a preparation method and application thereof. The polyacrylate emulsion is prepared from the following raw materials in parts by mass: 40 to 60 parts of methyl methacrylate, 5 to 8 parts of acrylic acid, 10 to 15 parts of a fluorine-containing acrylate monomer, 5 to 10 parts of vinyl polysiloxane, 4 to 8 parts of nano cuprous oxide, 3 to 6 parts of vinyl trimethoxy silane, 10 to 15 parts of carboxymethyl chitosan, 1 to 3 parts of polylysine, 2 to 3 parts of EDC.HCl, 0.4 to 1 part of an initiator, 50 to 60 parts of N-methyl pyrrolidone and 40 to 50 parts of deionized water. The preparation method comprises the following steps: S1, preparing modified nano cuprous oxide; s2, preparing a reaction solution I; s3, preparing a reaction solution II; and S4, preparing the nano cuprous oxide / chitosan grafted polyacrylate emulsion. According to the invention, vinyl trimethoxy silane is used for modifying nano cuprous oxide for the first time, acrylic acid reacts with carboxymethyl chitosan and polylysine to introduce C = C, and then the product is further copolymerized with other monomers, so that polyacrylate is endowed with excellent hydrophobic, oleophobic, antibacterial and self-cleaning properties.
Owner:蚌埠泰鑫材料技术有限公司
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