Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
870results about How to "Fast adsorption rate" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Composite fiber as well as preparation method and application thereof
ActiveCN105603718ARetains the property of large specific surface areaAchieve reuseOther chemical processesOrganic-compounds/hydrides/coordination-complexes catalystsFiberSpecific adsorption
The invention relates to a composite fiber. The composite fiber comprises a fiber carrier, and a graphene aerogel layer covering the outer side of the fiber carrier. According to the composite fiber provided by the invention, the relatively thin graphene aerogel layer covers the surface of the composite fiber, and a self surface shielding effect of existing graphene aerogel is overcome; the adsorption speed and adsorption efficiency of the graphene aerogel of the unit volume are improved; the fiber carrier of the composite fiber provided by the invention provides a bracket for the graphene aerogel and the mechanical strength is enhanced; when the composite fiber is used as an adsorption material, the composite fiber can be in seamless butt joint with an existing cigarette production process directly, and replaces an existing adsorption fiber so that the specific adsorption on benzopyrene polycyclic aromatic hydrocarbon type harmful substances can be realized; and meanwhile, other aromatic substances in smoke are kept so that the flavor and aroma of cigarettes are not influenced.
Owner:JINAN SHENGQUAN GROUP SHARE HLDG
Amino-protected crosslinking magnetic chitosan composite adsorbent and preparation method thereof
InactiveCN102744044ASimple preparation processProcess parameters are easy to controlOther chemical processesAlkali metal oxides/hydroxidesPolymer scienceEpichlorohydrin
Owner:WUHAN UNIV
Process for preparing shell glycan composite adsorbent
InactiveCN1724142AWide variety of sourcesEasy to processOther chemical processesActivated carbonAcetic acid
A composite adsorbent is prepared from chitosan through dissolving it in the solution of acetic acid, proportionally adding activated carbon powder, adding glutaraldehyde solution, regulating pH value, cross-linking reacting in warm water bath, solid-liquid separation, washing and baking the solid, grinding and sieving. Its advantage is high adsorption and adsorbing speed.
Owner:WUHAN UNIV
Method for preparing high-loading iron cyanide complex/silicon dioxide hybrid materials
ActiveCN101041123AIncrease loadFast adsorption rateSilicon compoundsRadioactive decontaminationPotassiumSilicon dioxide
The invention relates to a preparing method for ferrocyanide with high load / silica hybrid material, belonging to a preparing method for radionuclide ion absorbing material. The method uses the salt solution with metal ion such as Mn, Sn, Ti, Fe, and Ni so on to react with potassium (sodium) ferrocyanide so as to obtain nanometer particle of ferrocyannide. The particle is fixed by silica solution in water system or is fixed by polymerization siloxane in organic solvent and proper inorganic acid, organic amine or amine water is added to obtain hybrid gel. The hybrid gel is dried, rubbed and screened to obtain ferrocyanide with high load / silica hybrid material. The high load of the material is high and the absorption to nuclide ion is strong. In addition, the material intensity can satisfy the demand of packed bed. The particle diameter can be controlled so as to avoid the problem that the water resistance of bed layer generated by ferrocyanide used alone is overlarge.
Owner:TSINGHUA UNIV
Preparation method of graphene oxide/silicon dioxide hybrid aerogel
A preparation method of graphene oxide / silicon dioxide hybrid aerogel comprises the following steps: A, adding 0.05-0.1 mol of a precursor into 9-18 ml of distilled water and dropwise adding a hydrolyst with its concentration of 0.2-0.6 mol / L into the precursor aqueous solution, wherein molar ratio of the hydrolyst to the precursor is 1:20-1:100; stirring at 20-30 DEG C for 5-8 h; adjusting pH value to 6-7 and stirring for 5-45 min so as to obtain a dispersion containing silicon dioxide microspheres; B, adding water to dilute the silicon dioxide microsphere dispersion by 5-50 times, carrying out iso-volume mixing on the diluted silicon dioxide microsphere dispersion and a graphene oxide dispersion with its concentration being 0.6-2 mg / ml, stirring for 10-30 min, carrying out ultrasonic treatment for 10-30 min so as to obtain graphene oxide / silicon dioxide hybrid aerogel; and C, freezing the hybrid aerogel under liquid nitrogen for 5-10 min, freeze-drying and dewatering to obtain the graphene oxide / silicon dioxide hybrid aerogel. The method is environmentally friendly, and the technology is simple. The prepared hybrid aerogel has advantages of complete gel network structure, high porosity, good adsorptivity, high strength, low density and the like.
Owner:SOUTHWEST JIAOTONG UNIV
Preparation method of metal-organic framework porous adsorption material for normal paraffin and isoparaffin adsorption separation
InactiveCN104549160AHigh purityReduce transition timeOther chemical processesAdsorption purification/separationN dimethylformamideReaction temperature
The invention relates to a preparation process of a metal-organic framework porous adsorption material for C4-C8 normal paraffin and isoparaffin adsorption separation. According to the preparation method of the synthesized metal-organic framework porous adsorption material, metal ion nitrate and an organic ligand are dissolved according to the mass ratio of 1:1-15 in a mixed solution of N,N-dimethylformamide and N,N-diethyl formamide; stirring is carried out for 0.5-12 h; reaction temperature is controlled to 80-250 DEG C, and reaction time is 12-120 h; and by a hydrothermal synthesis method, the metal-organic framework porous adsorption material is prepared. The material has characteristics as follows: specific surface area is large; pore structure height is ordered; pore size is controllable; surface potential energy is controllable; and adsorption capacity of normal paraffin is large. The material can selectively adsorb normal paraffin from mixed materials of normal paraffin and isoparaffin, has high selectivity and has a wide practical application prospect in normal paraffin and isoparaffin separation.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method of porous boron nitride nanofibers
ActiveCN104528671AUniform shapeDiffraction peaks are clearMaterial nanotechnologyNitrogen compoundsFiberSynthesis methods
The invention relates to a preparation method of porous boron nitride nanofibers. The preparation method mainly utilizes a three-step synthesis method, namely (1) synthesizing melamine diboronic acid precursor powder from boric acid and melamine in a hydrothermal manner; (2) rapidly freezing and cooling a hot water solution of a melamine diboronic acid precursor with liquid nitrogen by virtue of a freeze-drying method, then drying, and synthesizing melamine diboronic acid nanofibers; and (3) carrying out high-temperature thermal cracking on the melamine diboronic acid nanofibers in protective atmosphere, so as to obtain the porous boron nitride nanofibers. According to the preparation method, molecular crystals of melamine diboronic acid are rapidly separated and nucleated by virtue of a freeze drying technique, so that the growth of the crystals is avoided; the diameters of the prepared porous boron nitride nanofibers reach a nanometer scale, and the porous boron nitride nanofibers are high in purity, uniform in shape, high in slenderness ratio and large in specific surface area.
Owner:HEBEI UNIV OF TECH
Nanofiber membrane and membrane adsorbing assembly for extracting uranium from seawater and brine water and application of nanofiber membrane and membrane adsorbing assembly
InactiveCN105080509AImprove adsorption efficiencyHigh mechanical strengthOther chemical processesProcess efficiency improvementIndustrial waste waterSpinning
The invention discloses a nanofiber membrane and a membrane adsorbing assembly for extracting uranium from seawater and brine water and application of the nanofiber membrane and the membrane adsorbing assembly. The nanofiber membrane is prepared by the steps: preparing polyacrylonitrile into a spinning solution; depositing polyacrylonitrile nanowires on a macromolecular non-woven fabric through an electrostatic spinning process to obtain a polyacrylonitrile nanofiber membrane; and then carrying out amidoximation on the polyacrylonitrile nanofiber membrane to obtain the nanofiber membrane. The membrane adsorbing assembly is prepared by the steps: preparing the nanofiber membrane into a rolled membrane assembly; and then carrying out amidoximation on the rolled membrane assembly to obtain the nanofiber membrane adsorbing assembly. The membrane adsorbing assembly disclosed by the invention is high in adsorption capacity, great in adsorption rate, stable in recycling performance and high in mechanical strength. The membrane adsorbing assembly not only is suitable for extracting uranium element from water bodies such as seawater or brine water and the like, but also is suitable for separating and recovering other noble metal or heavy metal ions from industrial wastewater, underground water and drinking water separately as well as removing metal ions from an organic phase.
Owner:和晶(上海)新能源科技有限公司
Dechlorination agent and preparation method thereof
ActiveCN103386244AImprove adsorption efficiencyHigh dechlorination precisionDispersed particle separationHigh concentrationChemical reaction
Owner:康健科技(山东)有限公司
Nitrogen-doped porous hollow carbon sphere carbon dioxide adsorption material as well as preparation method and application thereof
ActiveCN106861618AWide variety of sourcesImprove biological activityOther chemical processesAlkali metal oxides/hydroxidesUltrasonic oscillationNitrogen doped
The invention relates to a nitrogen-doped porous hollow carbon sphere carbon dioxide adsorption material as well as a preparation method and application thereof. The preparation method comprises the following steps: adding SiO2 sphere flowers into mixed liquid of deionized water, absolute ethyl alcohol and ammonia water, and carrying out ultrasonic oscillation until the SiO2 sphere flowers are completely dispersed; and then adding a dopamine hydrochloride water solution, uniformly stirring at the room temperature, filtering, washing, drying, and processing at 700-900 DEG C for 2-4 hours in a N2 atmosphere so as to obtain nano-composite spheres; and finally impregnating the nano-composite spheres in hydrofluoric acid to remove the SiO2 sphere flowers, filtering, washing, and drying, so as to obtain the nitrogen-doped porous hollow carbon sphere CO2 adsorption material. The adsorption material is a porous hollow carbon sphere, the particle sizes of porous hollow nano-carbon spheres are about 400nm, the porous hollow nano-carbon spheres are uniform and regular, and the adsorption material has high nitrogen content, adsorptive property, specific surface area and pore volume and high-dispersed regular appearance, the surface of the adsorption material contains rich amino active sites, and the adsorption material can be applied to efficient adsorption of industrial CO2.
Owner:SHAANXI YUTENG IND
Method for preparing biological carbon with high nitrogen-phosphorus adsorption properties
ActiveCN103611497AFast adsorption rateHigh recovery rateOther chemical processesRare-earth elementAgricultural residue
The invention discloses a method for preparing biological carbon with high nitrogen-phosphorus adsorption properties. According to the method, forestry and agricultural residues are taken as raw materials to prepare the biological carbon with the high nitrogen-phosphorus adsorption property by carrying out high-temperature oxygen-deficient themolysis by utilizing the catalytic performance of light rare earth elements. The sources of the utilized raw materials are wide, the cost of a rare earth catalyst is low, and the prepared biological carbon is high in nitrogen-phosphorus adsorption speed and large in nitrogen-phosphorus adsorption capacity; the largest adsorbing capacities of NO3<->, NH4<+> and PO4<3-> can respectively reach 38.44mg / g, 15.58mg / g and 19.74mg / g. The method is simple in process operation, low in investment requirement and cost and high in product recovery rate and application value.
Owner:四川发展环境科学技术研究院有限公司
Method for preparing thioamide-based chelating nanofiber for adsorbing heavy metal ions
InactiveCN102140705AAchieve enrichmentUniform diameterOther chemical processesFilament/thread formingHeat stabilitySolvent
The invention relates to a method for preparing a thioamide-based chelating nanofiber for adsorbing heavy metal ions by combining an electrostatic spinning technology with a chemical grafting technology. The method comprises the following steps of: preparing a nanofiber from polyacrylonitrile which has high chemical stability, is easily subjected to electrospinning and is taken as an initiative raw material of reaction by the electrostatic spinning technology, pre-crosslinking, and performing thioamidation to prepare the chelating nanofiber for adsorbing the heavy metal ions. The fiber membrane of the prepared chelating nanofiber has good appearance, uniform diameter, high mechanical property, heat stability and solvent resistance, and high property of adsorbing the heavy metal ions such as gold, silver, lead, mercury, palladium, cadmium and the like. By the technology, the preparation process is simple, production equipment is low-cost, and the chelating nanofiber has low requirement on production conditions, and high properties, so the chelating nanofiber has high practical value, the content of the heavy metal ions which are produced due to industrial development and harm human health is reduced, and the chelating nanofiber has a wide application prospect for solving the livelihood problem.
Owner:JILIN UNIV
Heavy metal adsorbent for extracorporeal perfusion method and preparation method of heavy metal absorbent
InactiveCN102716719AImprove adsorption capacityLarge adsorption capacityIon-exchange process apparatusOther chemical processesResin microsphereBiocompatibility
The invention discloses an adsorbent for removing heavy metals through extracorporeal blood perfusion and a preparation method of the absorbent. Activating agents are used activating resin microsphere carriers with good biocompatibility, then sulihydryl reagents are fixed through bonding or coupling to form the heavy metal adsorbent, the surface of the heavy metal adsorbent is provided with a great quantity of sulihydryl functional groups and an adsorption effect through complexing or chelation between adsorption target liquid compositions and heavy metals and ions thereof is facilitated; the biocompatibility and the adsorption capacity are good; and the adsorbent has the characteristics of low preparation cost, simple synthesis process, strong adsorption capacity, rapid adsorption speed and the like, and can be used for extracorporeal whole-blood perfusion to remove in-vivo heavy metals and treat heavy metal poisoning.
Owner:汪志友
Method of adopting laminar duplex-metal hydroxide to recycle heavy metal ions in sewage
InactiveCN102583631ALow costFast adsorption rateOther chemical processesNickel oxides/hydroxidesSolid phasesIon
The invention discloses a method of adopting a laminar duplex-metal hydroxide to recycle heavy metal ions in sewage, belonging to the technical field of recycling of heavy metal in the sewage. After the laminar duplex-metal hydroxide is adopted to adsorb heavy metal ions, the heavy metal ions or macromolecule organic groups are adhered to the surface of a hydrotalcite; a few heavy metal ions or macromolecule organic groups enters into the intervals of laminates, and the heavy metal ion eliminating operation can be realized by simple precipitating and filtering operations. The laminar duplex-metal hydroxide has the advantages of low cost and fast absorption speed, thus the situation that the processing solution after the absorption is polluted again can not happen. Through recycling absorbed products, a composite metal oxide with uniform chemical composition and structure and favorable photoelectric performance can be obtained by a solid phase sintering technique. Therefore, the research on the application of the hydrotalcite in the sewage treatment has large practical meaning, and the method of adopting laminar duplex-metal hydroxides to recycle heavy metal ions in the sewage has favorable application prospect.
Owner:BEIJING UNIV OF CHEM TECH
Active/controllable graphene oxide surface ion imprinted polymer, and preparation method and application thereof
InactiveCN104262536ALarge specific surface areaImprove mechanical propertiesOther chemical processesWater/sewage treatment by sorptionMetal ions in aqueous solutionFunctional monomer
The invention provides an active / controllable graphene oxide surface ion imprinted polymer, and a preparation method and application thereof, belonging to the technical field of preparation and separation of materials, wherein the graphene oxide surface ion imprinted polymer is prepared from a coupling agent, a functional monomer, a cross-linking agent and an initiator by using graphene oxide as a substrate and metal ions as a template in a reversible addition-fragmentation chain transfer polymerization manner. The problems to be solved in the invention are as follows: the thickness of a surface polymer layer is uncontrollable; template molecules cannot be thoroughly eluted because of being embedded deeply; and the adsorption rate is low, etc; the graphene oxide surface ion imprinted polymer is mainly used for adsorbing corresponding metal ions in aqueous solution and has good absorption effect at room temperature and obvious selective separation effect; and the graphene oxide surface ion imprinted polymer can be reused frequently.
Owner:JIANGSU UNIV
Granular lithium ion sieve
InactiveCN101955210AFast adsorption rateLarge adsorption capacityLithium compoundsCross-linkSeawater
The invention relates to a granular lithium ion sieve, which is used for extracting lithium from (metal) lithium-containing solution such as salt lake brine, seawater, well brine or geothermal water and the like. The granular lithium ion sieve is prepared by cladding lithium ion sieve powder into a polymer in the process of forming a cross-linked polymer through the reversed phase suspension polymerization of an acrylate monomer. The granular lithium ion sieve has the advantages of high mechanical strength, high selectivity, high adsorbance, high adsorption rate (the adsorbance is 2 mmol*g<-1> in one hour) and high stability. The foundation is provided for extracting the lithium from the salt lake brine by an ion sieve adsorption method.
Owner:EAST CHINA UNIV OF SCI & TECH
Preparation method of graphene oxide and polyvinyl alcohol hybrid aerogel
InactiveCN105521770AUniform cellsStrong water absorptionOther chemical processesWater contaminantsCross-linkPolyvinyl alcohol
The invention belongs to the technical field of preparation of aerogel having a water treatment function, in particular relates to a preparation method of graphene oxide and polyvinyl alcohol hybrid aerogel. The preparation method comprises the following five processing steps: preparing a graphene oxide dispersing solution; preparing a graphene oxide / chitosan mixed solution; preparing a self-foaming solution; preparing a gel solution; preparing graphene oxide / chitosan and polyvinyl alcohol hybrid aerogel. The preparation method is characterized in that the graphene oxide and polyvinyl alcohol hybrid aerogel is prepared by fully mixing the graphene oxide dispersing solution with distilled water, glacial acetic acid and chitosan powder and then adding polyvinyl alcohol, a filling agent, a cross-linking agent, a foaming agent and a catalyst in the mixture. The graphene oxide and polyvinyl alcohol hybrid aerogel prepared by the invention is strong in water absorbing capacity, high in hydrophily and quick in adsorption rate and can be reused after regeneration and can be used for industrial wastewater treatment. The preparation method of the graphene oxide and polyvinyl alcohol hybrid aerogel, disclosed by the invention, has the advantages that the principle is simple, the operation is easy, processing equipment is simple, the cost of raw materials is low, and the preparation method is beneficial for industrialization.
Owner:QINGDAO UNIV
Preparation method for activated carbon material and application thereof
The invention provides a preparation method for an activated carbon material. The preparation method comprises the following steps: 1) taking an activator aqueous solution, adding ion exchange resin and stirring and mixing the mixture for ion exchange; 2) washing, filtering and drying the obtained mixture to obtain the required resin; 3) optional one step: a, carbonizing the obtained resin in an N2 atmosphere; b, after pre-oxidizing the obtained resin in air, carbonizing the resin in the N2 atmosphere; and 4) washing and drying the obtained carbon material to obtain the required activated carbon material. The invention further discloses an activated carbon material by adopting the method and application thereof. According to the activated carbon material and the application thereof provided by the invention, the activator can be uniformly dispersed and the carbon material is activated by alkali metal ions at a high temperature. The prepared activated carbon material has good application potential in adsorbing carbon dioxide and phenol.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
Preparation method of inorganic-organic compound-type adsorbent based on clinoptilolite and application for removing Cr(VI) in industrial waste water
InactiveCN101797496ALarge adsorption capacityWide variety of sourcesOther chemical processesAluminium silicatesIndustrial waste waterSorbent
The invention belongs to the technical field of waste water processing. An inorganic-organic compound-type adsorbent is prepared by compositing three natural materials of natural clinoptilolite, humic acid and chitosan. The method comprises the following specific steps of: performing pre-activation modification on the natural clinoptilolite, performing insolubility processing on humic acid, sufficiently mixing the processed clinoptilolite, insoluble humic acid and acidic chitosan solution according to a certain proportion, heating and drying through microwave, grinding and screening to prepare the inorganic-organic compound-type adsorbent with a loose porous structure, high surface activity and high ion exchanging performance. The prepared adsorbent is used for processing the industrial waste water with the concentration of Cr(VI) lower than 100mg / L, wherein the concentration of effluent Cr(VI) is lower than 0.5mg / L, which meets the requirement of the maximum permissible discharge concentration of the first type of pollutant in the national waste water comprehensive discharge standard. The method has easily obtained materials, simple processing technique and high processing efficiency, and is suitable for large-scale production.
Owner:BEIJING FORESTRY UNIVERSITY
Method for extracting lithium from fly ash
ActiveCN105692659AEfficient recyclingEffectively achieve zero emissionsLithium carbonates/bicarbonatesLithium carbonateFly ash
The invention discloses a method for extracting lithium from fly ash. The method comprises a process including the steps of carrying out one-step alkali dissolving, filtering, washing, adsorbing, desorbing, concentrating and carrying out carbonation precipitation. The main process comprises the following steps: carrying out an alkali dissolving reaction on the fly ash and an alkali solution; after finishing the reaction, carrying out solid-liquid separation and washing, and adsorbing obtained filtrate and washing solution by a lithium ion adsorbent; desorbing lithium ions and concentrating; adding a precipitating agent into a concentrated solution and carrying out lithium precipitation operation; after finishing precipitation, filtering, washing and drying to obtain a solid, namely a lithium carbonate product prepared from the fly ash. The invention provides the simple and efficient method for extracting the lithium from the fly ash; the method has a wide raw material source and has the advantages of simple process, moderate reaction conditions, no influence on subsequent treatment of the filtrate and filter residues and capability of effectively controlling impurities; the extraction rate is more than 60 percent and the method is applicable to industrial popularization.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Multifunctional vulcanized rubber containing polyvinylpyrrolidone-modified graphene oxide and preparation method of multifunctional vulcanized rubber
ActiveCN104558708AImprove mechanical propertiesImprove thermal conductivityPolymer scienceHeat conducting
The invention discloses multifunctional vulcanized rubber containing polyvinylpyrrolidone-modified graphene oxide and a preparation method of the multifunctional vulcanized rubber. The multifunctional vulcanized rubber comprises the following components in parts by mass: 100 parts of rubber matrix, 1-4 parts of polyvinylpyrrolidone-modified graphene oxide, 2-5 parts of an anti-aging agent, 3-10 parts of zinc oxide, 1-3 parts of stearic acid, 0.5-1 part of a vulcanizing accelerator and 1-3 parts of a vulcanizing agent. The multifunctional vulcanized rubber prepared by the method has a plurality of functions, such as a mechanical function, a heat-conducting function and a solvent-resistant function.
Owner:NANJING UNIV OF SCI & TECH +1
Innocent treatment method and apparatus for catalytic oxidation of waste water induced by continuous microwave-ultraviolet
InactiveCN101333013AFast adsorption rateImprove adsorption capacityWater/sewage treatment by irradiationWater/sewage treatment by sorptionSorbentCatalytic oxidation
The invention discloses a wastewater harmless treatment method by continuous microwave-ultraviolet inducing catalysis oxidation and equipment thereof, belonging to the technical field of wastewater treatment process. In the invention, after being pretreated, wastewater flows through an adsorbent reaction bed and carries out microwave-inducing catalysis oxidation reaction, organic matter in wastewater can be quickly decomposed into small molecular inorganic matter and the adsorbent in the reaction bed is recycled by an adsorbent regeneration system; and finally the wastewater is purified and discharged. The invention adopts microwave radiation to improve the adsorption rate of the adsorbent, the regeneration mode of the adsorbent has fast regeneration speed, low energy consumption and no secondary pollution, the continuous process of continuous regeneration and continuous adsorption of the adsorbent can be realized, the batch-type or sequencing-batch-type operation processing mode of the traditional adsorbent can be changed, and the processing capacity of the system can be greatly enhanced.
Owner:VISBE XIAMEN ENVIRONMENT TECH CO LTD
5A molecular sieve absorbent for adsorptive separation of distillate containing n-alkane and preparation method of 5A molecular sieve adsorbent
PendingCN106861614AAdsorption equilibrium time is shortImprove adsorption and separation efficiencyOther chemical processesHydrocarbon oils refiningIon exchangeMolecular sieve
The invention discloses a 5A molecular sieve adsorbent for adsorptive separation of distillate containing n-alkane and a preparation method of the 5A molecular sieve adsorbent. The preparation method comprises the following steps: adding polyquaternary ammonium salt serving as a crystallization synthetic soft template agent into a sol system formed by mixing a silicon source with an aluminum source, and carrying out hydrothermal synthesis to obtain a hierarchically porous 4A molecular sieve with a microporous-mesoporous structure; after the 4A molecular sieve is subjected to soft template agent removal, carrying out roll forming on the treated 4A molecular sieve and a binder to obtain small balls with particle sizes of 0. 2 to 0.8mm; drying, roasting and then carrying out calcium ion exchange and activating to obtain the 5A molecular sieve adsorbent with the microporous-mesoporous structure, wherein the proportion of a 5A molecular sieve in the adsorbent is 90 to 97 weight percent, and the proportion of the binder is 3 to 10 percent. The preparation method of the adsorbent, provided by the invention, has the advantages that a diffusion coefficient of the n-alkane in the molecular sieve is remarkably improved while the synthesized hierarchically porous 5A molecular sieve maintains higher equilibrium adsorption capacity for the n-alkane, thereby increasing the rate of adsorptive separation.
Owner:CHINA CATALYST HLDG CO LTD
Preparation method and application SiO2/GO surface metal ion imprinted polymer
InactiveCN104530334ALarge specific surface areaImprove mechanical propertiesOther chemical processesAlkali metal oxides/hydroxidesPolymer scienceReversible addition−fragmentation chain-transfer polymerization
The invention provides a preparation method and application a SiO2 / GO surface metal ion imprinted polymer and belongs to the technical field of material preparation and separation. Particularly, silica / graphene oxide is used as a base, metal ions serve as a template, coupling agents, functional nonomers, cross-linking agents and initiators are used, reversible addition-fragmentation chain transfer polymerization serves as a polymerization mode, and the SiO2 / GO surface metal ion imprinted polymer is prepared; the problems that the thickness of the surface polymer cannot be controlled, adsorption sites are not uniformly distributed, template molecules cannot be thoroughly eluted because they are wrapped too deep, the adsorption speed is low, the synthesis steps of chain transfer agents are complex, and time is consumed are solved; the SiO2 / GO surface metal ion imprinted polymer is mainly used for selectively separating corresponding metal ions in a water solution, the selective separation effect is remarkable, and the polymer can be reused many times.
Owner:JIANGSU UNIV
Phosphate removing agent prepared by loading lanthana on active carbon fibre substrate and preparation method thereof
InactiveCN102008940AHigh removal rateImprove adsorption capacityOther chemical processesEnergy based wastewater treatmentFiberHigh phosphate
The invention relates to a novel phosphate removing and absorbing agent of active carbon fibre and lanthana (La) prepared by loading lanthana on the active carbon fibre substrate and a preparation method thereof. The phosphate removing and absorbing agent comprises the following components in percent by weight: 5.54-55.4% of lanthana and 94.46-44.6% of active carbon fibre. The method comprises the following steps of shearing the active carbon fibre into fine blocks, washing with deionized water for many times, dipping in a certain amount of deionized water, filtering, boiling and drying, then dipping the obtained active carbon fibre in a certain amount of lanthanum-containing salt solution, filtering and drying, placing the obtained solid in a muffle furnace, activating the solid at a proper temperature and then taking out to obtain the phosphate removing and absorbing agent of active carbon fibre and La. The novel phosphate removing and absorbing agent of active carbon fibre and La has the advantages of high phosphate removal rate, large absorption volume, high absorption rate, and the like.
Owner:SHANGHAI UNIV
Novel composite water treatment material and preparation method thereof
ActiveCN103272560AFast movementFast adsorption rateOther chemical processesWater/sewage treatment by sorptionOxideWater treatment
The invention relates to a novel composite water treatment material and a preparation method thereof. The novel composite water treatment material contains tourmaline, sepiolite and graphene oxide or graphene. According to the preparation method, the graphene or the graphene oxide is wrapped on the surfaces of the sepiolite and the tourmaline by a reflux method, so the adsorptive property of the sepiolite on organic wastewater can be effectively improved by utilizing the large surface area of the graphene or the graphene oxide. The novel composite material has the characteristics of high adsorption efficiency, small using amount, energy conservation and the like, in particular, the sepiolite and the tourmaline are almost not consumed, so the treatment cost can be greatly reduced, and the dangerousness that dye molecules belonging to organic matters difficult to degrade are immersed into natural water and accumulated in the environment is avoided. Meanwhile, the graphene oxide and the graphene have good antibacterial property, so the phenomenon that activated sludge is increased too fast can be effectively improved, and considerable economic benefit, environmental benefit and social benefit are achieved.
Owner:HEBEI UNIV OF TECH
Preparation method of adsorbent for acid dye wastewater treatment
ActiveCN102671631AImprove adsorption capacityImprove film formationOther chemical processesWaste water treatment from textile industryCross-linkSorbent
The invention relates to the field of functional materials, particularly a preparation method of an adsorbent for acid dye wastewater treatment. The invention mainly solves the technical problem that dyeing wastewater can not be easily decolorized, can not achieve the discharge standard and the like in the prior art. The preparation method comprises the following steps: putting 8-10g of beta-cyclodextrin into 1-2g of citric acid monohydrate, and adding 1g of PEG-400 and 0.25g of sodium dihydrogen phosphate to obtain a beta-cyclodextrin polymer by polymerization; adding a silane coupling agent into a chitosan solution; and cross-linking the beta-cyclodextrin polymer with the chitosan to obtain a beta-cyclodextrin-chitosan porous membrane, wherein the mol ratio of the chitosan to the beta-cyclodextrin polymer is 1:3..
Owner:SAINTYEAR HLDG GROUP
Method for preparing composite dephosphorus adsorbent by virtue of activated carbon fiber loaded with metal
InactiveCN102553533AReduce manufacturing costImprove adsorption capacityOther chemical processesWater/sewage treatment by sorptionActivated carbonIron salts
The invention discloses a method for preparing composite dephosphorus adsorbent by virtue of activated carbon fiber loaded with metal. Carbon fiber is used as a matrix which is loaded with a metallic compound. The method comprises the following steps of: a, mixing lanthanum ions into an iron salt for preparing a mixture solution of iron ions and lanthanum ions; b, putting the prepared solution under an ultrasound environment, additionally adding a radiation method, gradually adding a hydroxide solution into a metallic ion mixture solution until the pH reaches 9-10, and obtaining nano-particle suspension liquid of iron and lanthanum composite metal hydroxide; c, shearing activated carbon fiber into pieces, washing, dipping, filtering and drying; d, weighing the activated carbon fiber, adding the activated carbon fiber into the suspension liquid, processing by utilizing ultrasound waves, taking out solid matters, and washing for multiple times until the pH reaches 7; and e, drying the solid matters, obtaining an adsorbent material after cooling, and sealing the adsorbent material for storage. According to the invention, the iron and lanthanum composite metal hydroxide is in uniform particle size distribution on the carbon fiber matrix, has a high adsorption capacity and a low preparation cost and is suitable for industrial application.
Owner:SHANGHAI UNIV
Catalytic particle electrode used for removing refractory organics and ammonia nitrogen from wastewater and preparation method and application thereof
ActiveCN104925913AEasy to prepareFast adsorption rateWater/sewage treatment using germicide/oligodynamic-processChemistryActivated carbon
The invention relates to the field of wastewater treatment, in particular to a catalytic particle electrode used for synchronously removing refractory organics and ammonia nitrogen from wastewater and a preparation method and application thereof. The electrode comprises shell activated carbon and metal components loaded on the shell activated carbon, wherein the particle size of the shell activated carbon is 1mm-5 mm, and the content of the metal components is 0.8wt%-2.5wt% the total mass of the activated carbon. Packing of the catalytic particle electrode has the advantages of being high in catalytic activity, low in price, easy to obtain, simple in preparation, high in COD and ammonia nitrogen degradation and removal efficiency, high in produced water mineralization degree, low in unit COD energy consumption and capable of being used continuously. Accordingly, the electrode is suitable for treatment of wastewater which is difficult to degrade biologically and contains high-concentration organic pollutants and high ammonia nitrogen.
Owner:BEIJING FORESTRY UNIVERSITY
Process for producing ferrous iron titanium cyanide with spherule silica gel as carrier
ActiveCN101219366AAvoid washing offAvoiding the use of not easy to wash offOther chemical processesRadioactive decontaminationPotassiumMoisture resistance
The invention provides a preparation method of potassium titanium hexacyanoferrate adopting tiny ball-shaped silicagel as carrier, which relates to a preparation method of high specific surface potassium titanium hexacyanoferrate adopting tiny ball-shaped silicagel as carrier. The method is that fashioned porous tiny ball-shaped silicagel under the protection of nitrogen and in the condition of heating and refluxing reacts with organic solvent solution of tetrabutyl titanate. The acquired tiny ball-shaped silicagel loaded with unformed titanium dioxide is dried, dipped in hydrochloric acid solution of kalium ferrocyanatum and then reacting for 12-24h to acquire the high specific surface potassium titanium hexacyanoferrate by adopting tiny the ball-shaped silicagel as carrier. Potassium titanium hexacyanoferrate in the material has adjustable loading amount, good adsorptivity to nuclides, high specific surface, good particle sphericility and solidity, and avoids over-limit moisture resistance of bed layer caused by exclusive use of potassium titanium hexacyanoferrate particles; moreover, owing to existence of Ti-O-Si covalent bond, potassium titanium hexacyanoferrate particles and tiny ball-shaped silicagel can link closely, and do not lose easily during the waste water disposal.
Owner:TSINGHUA UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com