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74results about How to "No decrease in activity" patented technology
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Catalyst for hydrogen production from methane vapor reforming and preparing method thereof
InactiveCN101224427AEasy to prepareHigh reactivityHydrogenMetal/metal-oxides/metal-hydroxide catalystsChemistryComposite oxide
The invention discloses a methane reforming catalyst for the production of hydrogen and a preparation method thereof, which more particularly relates to a Ni methane vapor reforming catalyst for the production of hydrogen which takes a nanometer cerium zirconium composite oxide as the carrier and the corresponding preparation method, and belongs to the methane reforming catalyst field. The catalyst comprises 5-30 wt% of active Ni, 0-10 wt% of noble metal catalytic promoter, 0-10 wt% of rare earth and / or the catalytic promoter of alkaline earth oxide, 50-95 wt% of nanometer cerium zirconium composite oxide carrier with the particle diameter of 5-20 nm. The invention is characterized by simple preparation method, high reactivity, strong anti carbon performance, good stability, low cost, etc.; when the invention is applied to the methane vapor reforming catalyst for producing hydrogen, the requirements of industrialization on catalyst reactivity and usage life can be satisfied. The invention can be largely applied in fuel cell-hydrogen area.
Owner:HANERGY TECH
Anti-carbon-deposition Ni-based catalyst for hydrogen production by methane steam reforming and preparation method thereof
ActiveCN103752319AMeet activityMeet service life requirementsHydrogenMetal/metal-oxides/metal-hydroxide catalystsSteam reformingWater vapor
The invention relates to an anti-carbon-deposition Ni-based catalyst for hydrogen production by methane steam reforming and a preparation method thereof. By taking lanthanum nitrate, praseodymium nitrate, samarium nitrate, yttrium nitrate, zirconium nitrate, zirconium carbonate, zirconium oxychloride, and the like as precursors and taking ammonia as a precipitant, a pyrochlore composite oxide is prepared through using a coprecipitation method; and then the pyrochlore composite oxide is mixed with alumina by using a mechanical mixing method so as to obtain a pyrochlore alumina composite carrier. Nickel nitrate, nickel chloride, nickel sulfate, nickel oxalate and the like serving as nickel sources are loaded on the pyrochlore alumina composite carrier through direct immersion. The loading capacity of nickel in the catalyst accounts for 5-30% of the weight of the catalyst, the pyrochlore content of the catalyst is 5-50%, and the alumina content of the catalyst is 20-90%. By taking the pyrochlore alumina composite oxide as a carrier, the reaction activity and anti-carbon-deposition performance of the catalyst can be greatly increased; the preparation method of the catalyst is simple; and the catalyst has excellent catalytic activity and stability to methane steam reforming in a stationary bed.
Owner:NANCHANG UNIV +1
Catalyst for preparing synthesis gas or hydrogen and preparation method and application thereof
ActiveCN104084211AImprove thermal stabilityNo decrease in activityHydrogenMetal/metal-oxides/metal-hydroxide catalystsHydrogenFlue gas
The invention discloses a catalyst for preparing synthesis gas or hydrogen and a preparation method and application of the catalyst. The catalyst comprises an active ingredient and an assistant, and is loaded on a carrier. The preparation method comprises the following steps: uniformly mixing raw materials for preparing the catalyst through a coprecipitation, impregnation or mixed-grinding manner, and roasting to obtain the catalyst. The catalyst is applied to reaction of producing synthesis gas by reforming of natural gas or reaction of producing hydrogen by reforming of natural gas, or reaction of producing the synthesis gas or hydrogen by reclaiming coalbed methane, purge gas and flue gas with methane ingredient being 5-50 percent by mole. The catalyst has the characteristics of high activity, high stability, high temperature resistance and the like, and overcomes defects of poor stability, high probability of inactivation and the like of an existing methane reforming catalyst.
Owner:高潞空气化工产品(上海)能源科技有限公司
Ni-based catalyst adopting core-shell structure and used in DRM (dry reforming of methane) and preparation method
InactiveCN107552054AImprove anti-sinteringImprove anti-carbon performanceHydrogenMetal/metal-oxides/metal-hydroxide catalystsGas compositionReaction temperature
The invention discloses a Ni-based catalyst adopting a core-shell structure and used in DRM (dry reforming of methane) and a preparation method. A Ni-MOx@SiO2 (M is Zr, La and Ce) multi-core core-shell material is prepared with a reversed-phase microemulsion method with nickel nitrate, zirconium nitrate and the like as precursor salt. The additive amount of metal oxide in the catalyst is 1%-5% ofthe weight of the catalyst and the additive amount of nickel is 5%-10% of the weight of the catalyst. The sintering resistance and carbon deposit resistance of the catalyst are remarkably enhanced dueto addition of the metal oxide. The catalyst shows high activity, high stability and extremely high carbon deposit resistance and sintering resistance under the reaction conditions of normal pressure, reaction gas composition CH4:CO2 being 1.05:1, the air speed being 1,8000 ml.gcat<-1>.h<-1> and the reaction temperature being 800 DEG C. The catalyst has the advantages of being simple to prepare,free of secondary pollution to the environment, low in cost, high in catalytic efficiency and the like.
Owner:NANCHANG UNIV
Cu-Zr catalyst for steam reforming of methanol to prepare hydrogen and its prepn
InactiveCN1772378ACtiveSelectiveHydrogenMetal/metal-oxides/metal-hydroxide catalystsHydrogenHydrogen selectivity
The present invention discloses one kind of Cu-Zr catalyst for steam reforming of methanol to prepare hydrogen and its preparation process. The catalyst without Zn and Al components contains CuO10-80 mol%, ZrO2 20-90 mol% and MOx 0-20 mol%, where M is one of Ce, La, Fe, Y and Mn. The Cu-Zr catalyst is used for steam reforming of methanol to prepare hydrogen, and has high activity, high hydrogen selectivity and very high stability. Specifically, it has conversion rate in steam reforming of methanol of 90-99 %, hydrogen selectivity of 95-99 % and CO content in the product lower than 0.5 %.
Owner:FUDAN UNIV
Process for preparing ethylene glycol by ethylene oxide catalytic hydration
InactiveCN1566050AGood hydrothermal stabilityReactiveOrganic compound preparationHydroxy compound preparationThermal energyHydration reaction
The invention relates to a process for preparing ethylene glycol by ethylene oxide catalytic hydration, wherein the solid acid catalyst employs niobium compounds as the main active components, at least one of germanium, tin, lead, antimony, phosphor, sulfur, ferrum and cobalt is used as the auxiliary agent for preparing ethylene alcohol at rather low water ratio conditions, the thermal energy needed for processing reacting excess water can be reduced substantially, the catalyst used possesses not only good activity, selectivity, but also fine steadiness.
Owner:CHINA PETROLEUM & CHEM CORP +1
Catalyst used for hydrating epoxy ethane to prepare ethandiol
ActiveCN100413579CHigh activityHigh selectivityPreparation by hydroxy group additionMetal/metal-oxides/metal-hydroxide catalystsEpoxyHydration reaction
Owner:CHINA PETROLEUM & CHEM CORP +1
Application of a Methane Reforming Catalyst in Molten Carbonate Fuel Cell
InactiveCN102299345AEasy to prepareConditions are easy to controlCell electrodesMetal/metal-oxides/metal-hydroxide catalystsRare-earth elementMolten carbonate fuel cell
The invention discloses the application of a methane reforming catalyst in a molten carbonate fuel cell. The catalyst comprises an active component nickel with a content of 4-25 wt%, a rare earth element catalytic promoter with a content of 0-10 wt%, Alumina carrier with a content of 65-96 wt%. The preparation method of the catalyst is simple, can be operated under the conditions of medium temperature and low water-to-carbon ratio, has high reactivity, strong carbon deposition resistance and stability.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Ordered mesoporous polyoxometallate-titanium dioxide composite and preparation method
InactiveCN101612589ANo decrease in activityWater/sewage treatment by irradiationOrganic-compounds/hydrides/coordination-complexes catalystsChemical industryTitanium tetrachloride
An ordered mesoporous polyoxometallate-titanium dioxide composite and a preparation method belong to the chemical industry field. The composite comprises the following formula: H3PW12O40 / TiO2. The preparation method combines such technologies as sol-gel chemistry, template self-assembly and programmed temperature hydrothermal treatment, etc. The method takes H3PW12O40 as an inorganic former body, a mixture of purity titanium tetraisopropoxide (TTIP) and titanium tetrachloride (TiCl4) as a titanium source and a nonionic surfactant (Pluronic P123) with structure of HO (CH2CH2O)20(CH2CH(CH3)O)70(CH2CH2O)20H) as a structure-guiding agent. The improvement effect of the catalytic property of the composite is very obvious and the life of the catalyst is prolonged.
Owner:NORTHEAST NORMAL UNIVERSITY
Composite oxide catalyst for producing hydrogen by reforming methanol steam, preparation and application thereof
InactiveCN101612563AHigh activityNo decrease in activityHydrogenCatalyst activation/preparationSteam reformingWater vapor
The invention provides a composite oxide catalyst for producing hydrogen by reforming methanol steam. The catalyst takes ZnO as a main active component and takes composite oxides including Cr2O3, ZrO2, CeO2 and the like as catalytic and heat-stable additives and carriers in order to solve the defect that catalysts in the prior art for producing hydrogen by reforming methanol steam is low in activity and poor in stability. The catalyst is capable of methanol steam reforming reaction at a high reaction temperature between 430 and 480 DEG C at a total gas hourly space velocity between 5,000 and 30,000 h<-1>, wherein the hydrogen content of reformed gas is over 74 percent (mol), and the methanol conversion rate is still above 93 percent after 450 hours. The catalyst has the advantages of high activity and good stability, and is particularly applicable to the process of reforming methanol steam in palladium membrane reactors for producing pure hydrogen in situ.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Synthetic bamboo and wood vinegar, and production method and applications thereof
The invention relates to a synthetic bamboo and wood vinegar, and a production method and applications thereof, and belongs to the field of fine household chemicals. The synthetic bamboo and wood vinegar is characterized by comprising the following components: 89-99% of edible water, 0.5-10% of organic acid, 0.05-0.20% of bamboo leaf flavonoid, 0.05-1.6% of alcohol and 0.05-0.20% of water-soluble spice. The synthetic bamboo and wood vinegar not only can ensure that the original active components are not destroyed, but also can remove impurities, toxic irritative substances and unsafe substances such as cancerogenic substances and the like; the synthetic bamboo and wood vinegar is nontoxic for people and animals, has favorable environment compatibility and meets the requirements on safety for household articles; and the experiment proves that the activity of the synthetic bamboo and wood vinegar is not reduced, and on the contrary, by adding certain amounts of spice, the original smell of burning is converted into pleasant fragrance, thereby meeting the common people's requirements for consumption. The invention has the advantages of simple operation method, low manufacture cost and wide applicability.
Owner:靖江市城中村投资建设有限公司
Solid acid catalyst for preparing ethylene glycol by ethylene oxide hydration
InactiveCN1566049AReactiveHigh activityMetal/metal-oxides/metal-hydroxide catalystsBulk chemical productionHydration reactionSolid acid
The invention relates to a solid acid catalyst for preparing ethylene glycol by ethylene oxide hydration, wherein the niobium oxide loaded on oxide carrying agent is used as the main active component, metallic compounds selected from IVA and antimony, phosphor, sulfur, ferrum or cobalt as catalyst promoters, the obtained catalyst can be used for preparing ethylene glycol by ethylene oxide catalytic hydration, which possesses not only good activity, selectivity, but also fine steadiness.
Owner:CHINA PETROLEUM & CHEM CORP +1
Nitrogen-doped carbon material-supported palladium-based catalyst as well as preparation method and application thereof
InactiveCN107308976APracticalMild reaction conditionsPhysical/chemical process catalystsOrganic compound preparationAlcoholFormate
The invention discloses a nitrogen-doped carbon material-supported palladium-based catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: adding a nitrogen-doped carbon material into an alcohol solution; performing ultrasonic treatment for 5 min to 30 min; adding 1 wt% to 4.2 wt% of a palladium precursor solution to obtain an unreduced catalyst; heating, refluxing and stirring the unreduced catalyst for 4 h to 12 h; adding 10 ml to 20 ml of 1 M / L NaBH4; continuing to stir for 1 h to 2 h; filtering, washing and drying in vacuum to obtain the nitrogen-doped carbon material-supported palladium-based catalyst. In the invention, the catalyst nitrogen uses a nitrogen-doped carbon material as a catalyst carrier; the noble metal palladium is dispersed on the carrier; the loading capacity of palladium in the catalyst is 1.0 wt% to 5.0 wt%. The catalyst provided by the invention is applied to an aspect of catalyzing preparation of formate, and has advantages of simple production, low price of used materials, strong catalytic activity, high reusability and simple operation.
Owner:SHAANXI SCI TECH UNIV
Preparation method of calcium-iron type Ca2Fe2O5 catalyst
InactiveCN107857301AGood dispersionLarge specific surface areaIron compoundsMetal/metal-oxides/metal-hydroxide catalystsCombustionFoaming agent
The invention discloses a preparation method of a calcium-iron type Ca2Fe2O5 catalyst. The method adopts ferric nitrate, calcium nitrate and citric acid as precursors which are added with a certain amount of water to prepare a solution, and the solution is stirred at 40 DEG C for 30 minutes to be evenly dispersed, wherein the citric acid is added as a foaming agent for foaming at 180 DEG C for 12h, an obtained foaming substance is ground, sieved, and then calcined at 650 DEG C in a muffle furnace for 4h to finally obtain a high-purity Ca2Fe2O5 catalyst. The Ca2Fe2O5 catalyst prepared by the method has a large specific surface area and a stable framework structure, can keep extremely strong stability after being oxidized and reduced by an oxidant and a reducing agent for a plurality of times, and can be used in the fields of chemical chain combustion, chemical chain hydrogen production, photocatalysis and the like.
Owner:SOUTHEAST UNIV
Catalyst for synthesizing oxalate by CO coupling reaction and preparation method thereof
ActiveCN102784640AIncreased external specific areaSmall pressure dropPreparation by carbon monoxide or formate reactionMetal/metal-oxides/metal-hydroxide catalystsOxalateActive component
The invention relates to a catalyst for synthesizing oxalate by a CO coupling reaction and a preparation method thereof; the catalyst adopts metal wire mesh as a skeleton; a carrier coating is coated on the surface of the metal wire mesh; the carrier coating is loaded with active components and additives on the surface. Compared with the prior art, with the proviso that the catalytic activity is maintained to be the same, the catalyst of the invention greatly reduces the precious metals active component using amount per unit volume of the catalyst, significantly reduces the pressure drop of a catalyst bed layer, effectively decreases the radial temperature difference of the catalyst bed layer, improves the heat shift problem during the reaction process, and solves the problem of easy temperature jump when a traditional honeycomb catalyst is used in the reaction system.
Owner:PUJING CHEM IND SHA +1
Production of hydrogen by catalyzed decomposing magnesium and its mixture doped with other metals
ActiveCN100439238CNo decrease in activityReduce pretreatment processHydrogenMetal/metal-oxides/metal-hydroxide catalystsHydrogenCatalytic decomposition
Owner:HUZHOU OCHEM CHEM
Mixed rare-earth modified methane steam reformed nickel-based catalyst and preparation method thereof
ActiveCN103752320AEasy to prepareHigh reactivityHydrogenMetal/metal-oxides/metal-hydroxide catalystsSteam reformingWater vapor
The invention provides a mixed rare-earth modified methane steam reformed nickel-based catalyst and a preparation method thereof. According to the mixed rare-earth modified methane steam reformed nickel-based catalyst, nickel nitrate and the like are used as precursors and are directly immersed and loaded on spherical aluminum oxide modified by mixed rare earth. The mixed rare earth is obtained by mixing two selected from lanthanum-cerium, lanthanum-yttrium, lanthanum-praseodymium, lanthanum-samarium and the like, wherein the loading weight of nickel in the catalyst is 5-30% of the weight of the catalyst and the loading weight of the mixed rare earth is 0.5-10% of the weight of the catalyst; the ratio of the mixed rare earth is 7 / 3-3 / 7. With the adoption of the mixed rare earth, the separation cost of the rare earth can be greatly reduced; the preparation method of the catalyst is simple; the catalyst has the good catalytic activity and stability on reforming methane steam in a fixed bed.
Owner:NANCHANG UNIV +1
Two-dimensional iron monatomic catalyst as well as preparation and application thereof in production of ethylene by reduction of 1,2-dichloroethane
ActiveCN111468163AUniform ultrathin structureIncrease exposurePhysical/chemical process catalystsElectrolytic organic productionPtru catalystMaterials science
The invention relates to a two-dimensional iron monatomic catalyst for producing ethylene through reduction of 1,2-dichloroethane as well as a preparation method and application thereof. The catalystis prepared through the steps of self-template polymerization, drying, calcining, dipping and the like, the catalyst is composed of three elements of Fe, N and C, the percentage content of iron is 0.5-3%, and the iron is dispersed on a two-dimensional nitrogen-doped carbon matrix in a monatomic form. The two-dimensional iron monatomic catalyst provided by the invention presents a uniform ultrathinstructure, has excellent conductivity and electrochemical catalysis function, and shows excellent activity, selectivity and stability on ethylene production by electrocatalytic reduction dechlorination of 1,2-dichloroethane when being applied as an electrochemical cathode catalyst. The preparation method of the monatomic catalyst provided by the invention is simple and easy to implement and relatively low in cost, and meanwhile, the catalyst shows excellent catalytic performance in a reaction for preparing ethylene by dechlorinating 1,2-dichloroethane, and has a wide industrial application prospect.
Owner:DALIAN UNIV OF TECH
Catalyzer catalyzing and directly decomposing nitrogen oxide and preparing method and application of the same
InactiveCN101134165AHigh catalytic activityLow priceDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsDecompositionNitrogen oxide
The present invention is catalyst for catalyzing direct decomposition of nitrogen oxide and its preparation process and application. Up to now, nitrogen oxide is eliminated through either one catalyzed reduction process, which is limited by the reductant hydrocarbon, ammonia, etc; or one catalyzed direct decomposition process, which is simple, effective and economic. The catalyst for catalyzing direct decomposition of nitrogen oxide of the present invention consists of La2NiO4 and BaCO3 in the weight ratio of 2-9 to 1. The catalyst is suitable for catalyzed direct decomposition of nitrogen oxide in the presence or absence of oxygen.
Owner:HEILONGJIANG UNIV
Floating filter module, and water treatment apparatus and method using same
InactiveCN103502157ALess risk of breakageSolution to short lifeGeneral water supply conservationBiological treatment regulationSuction forceComputer module
Owner:大雄生态方案株式会社
Solid acid catalyzer for preparing glycol by hydrating ethylene oxide
InactiveCN1565735AReactiveHigh activityOrganic chemistryMolecular sieve catalystsHydration reactionNiobium
The invention relates to a solid acid catalyst for preparing glycol by hydration of ethylene oxide for reducing water rate, energy consumption and cost, abating the pollution, and improving catalyst stability. The technology for preparing the catalyst is that: niobium-supported metal compound on oxide carrier is served as main active component, IVB metal compound and at least one of vanadium or tantalum metal compound are added as promoter. The catalyst is used for preparing glycol by hydration of ethylene oxide with good activity, selectivity and stability, low energy consumption and low cost.
Owner:SHANGHAI RES INST OF PETROCHEMICAL TECH SINOPEC
Method for preparing sulfone by catalytic oxidation of thioether
InactiveCN1546468ANo pollutionEasy to separateOrganic chemistryOrganic compound preparationReaction temperatureCatalytic oxidation
The invention provides a process for preparing sulfur ether through catalytic oxidation comprising the steps of, adding 1-3 parts of raw material sulfur ether and 0.2-1 parts of solid catalyst MnFe[1,8]Cu[0.15]O4 into 5-10 parts of toluene solvent, reacting in oxygen atmosphere with a reaction temperature of 60-100 deg. C, wherein the parts of toluene solvent is by volume, the parts of sulfur ether is by mole parts, and the parts of catalyst is by weight. By using O2 as oxidizing agent for sulfur ether oxidization, the invention achieves the advantages of no environmental pollution and potential safety hazard proof.
Owner:SOUTH CHINA UNIV OF TECH
Liquid detergent composition, and process for production thereof
InactiveCN102597206ANo decrease in activityExcellent storage stabilityOrganic detergent compounding agentsHydrolasesHigh concentrationCleansing Agents
Disclosed are: a liquid detergent composition which does not undergo the deterioration in the activity of an enzyme contained therein and can maintain the storage stability of the enzyme at a good level even when a surfactant is contained therein at a high concentration; and a process for producing the liquid detergent composition. The liquid detergent composition is characterized by comprising the following components (A) to (D): (A) a surfactant (wherein a nonionic surfactant makes up 60 mass% or more of the component (A)); (B) a homopolyamino acid and / or a salt thereof; (C) an enzyme; and (D) water.
Owner:LION CORP
Hydrogen catalyzed alkyl halide dehaloginating reducton process for preparing hydrocarbon
InactiveCN1974498ANo pollution in the processMild conditionsCatalyst carriersHydrocarbon from halogen organic compoundsHydrogenReaction temperature
The present invention discloses catalyzed hydrogen reduction process of alkyl halide to dehaloginate and produce hydrocarbon. The process adopts alkyl halide as main material, inorganic palladium salt microcapsule as catalyst in the amount of 0.01-2 %, methanol and ethanol, n-hexane or tetrahydrofuran as solvent, and has hydrogen as reductant in 0.1-2.0 MPa introduced to react at 20-120 deg.c for 1-10 hr. The present invention has reuse of inorganic palladium salt microcapsule as catalyst, and possesses the advantages of no pollution, mild condition, high operation safety, easy separation of the catalyst for reuse, etc.
Owner:SOUTH CHINA UNIV OF TECH
Method for preparing dimethyl ether
ActiveCN101148397AHigh activityNo decrease in activityCatalyst carriersMetal/metal-oxides/metal-hydroxide catalystsSulfurActive component
The present invention relates to process of preparing dimethyl ether, and aims at providing technological scheme of preparing dimethyl ether in lowered reaction temperature, high catalyst efficiency, long service life of catalyst and other merits. The process of preparing dimethyl ether adopts methanol as main material and catalyst with niobium oxide as the main active component and P and / or S as the co-catalyst, and has reaction temperature of 100-350 deg.c and catalyst efficiency of 1-20 ml methanol / hr.g. The present invention may be applied in industrial production of dimethyl ether.
Owner:CHINA PETROLEUM & CHEM CORP +1
Anti-carbon deposition nimethyl methane steam reforming hydrogen production catalyst and preparation method thereof
ActiveCN103752319BNo decrease in activitySimple processHydrogenMetal/metal-oxides/metal-hydroxide catalystsSteam reformingWater vapor
The invention relates to an anti-carbon-deposition Ni-based catalyst for hydrogen production by methane steam reforming and a preparation method thereof. By taking lanthanum nitrate, praseodymium nitrate, samarium nitrate, yttrium nitrate, zirconium nitrate, zirconium carbonate, zirconium oxychloride, and the like as precursors and taking ammonia as a precipitant, a pyrochlore composite oxide is prepared through using a coprecipitation method; and then the pyrochlore composite oxide is mixed with alumina by using a mechanical mixing method so as to obtain a pyrochlore alumina composite carrier. Nickel nitrate, nickel chloride, nickel sulfate, nickel oxalate and the like serving as nickel sources are loaded on the pyrochlore alumina composite carrier through direct immersion. The loading capacity of nickel in the catalyst accounts for 5-30% of the weight of the catalyst, the pyrochlore content of the catalyst is 5-50%, and the alumina content of the catalyst is 20-90%. By taking the pyrochlore alumina composite oxide as a carrier, the reaction activity and anti-carbon-deposition performance of the catalyst can be greatly increased; the preparation method of the catalyst is simple; and the catalyst has excellent catalytic activity and stability to methane steam reforming in a stationary bed.
Owner:NANCHANG UNIV +1
Preparation and application of marine biological waste oyster shell-supported palladium catalyst
ActiveCN110743582AGreen synthesisEfficient synthesisPhysical/chemical process catalystsOrganic compound preparationPtru catalystPhosphate
The invention discloses preparation and application of a marine biological waste oyster shell-supported palladium catalyst. Oyster shells are used as calcium, cetyltrimethylammonium bromide is used asa porogen to synthesize hydroxyapatite by a hydrothermal method, and a heterogeneous palladium catalyst which can be recycled is prepared. The preparation of the marine biological waste oyster shell-supported palladium catalyst has the following advantages that (1) the oyster shells and phosphate are used as raw materials, the oyster shells and the phosphate are low in cost, easy to obtain, widely available and environmentally friendly, and the process is simple; (2) a Heck reaction of aryl halides such as iodobenzene and bromobenzene with olefin can be can efficiently (90% or above) catalyzed, after repeated six-time use of the catalyst, the activity is almost not reduced, and the product yield is still 90% or above; (3) excellent catalytic ability is achieved on Sonogashira coupling; and (4) compared with other carrier materials, hydroxyapatite carrier materials have the significant advantages that good chemical stability, thermal stability, low solubility and adjustable surface acid and base are achieved, the structure is easy to modify, and ion exchangeability is high.
Owner:GUANGDONG OCEAN UNIVERSITY
Application of mercuric oxide
InactiveCN104402086AImprove photocatalytic activitySolve the problem of low degradation activityWater/sewage treatment by irradiationWater treatment compoundsOrganic dyeHigh activity
The invention discloses an application of mercuric oxide. The mercuric oxide is taken as a photocatalyst to degrade an organic dye pollutant, so that the application scope of the mercuric oxide is wooden. The activity of the organic dye pollutant degraded by the mercuric oxide photocatalyst, such as a Rhodamine B dye is obviously higher than that of titanium dioxide P25 and is also obviously higher than that of a high-activity Ag3PO4 photocatalyst. Due to high durability of the mercuric oxide, the activity is not reduced after the mercuric oxide is recycled for more than 3 times. The mercuric oxide photocatalyst disclosed by the invention has high activity, high durability, simple preparation method and mild preparation conditions and facilitates popularization and application.
Owner:HUNAN UNIV OF SCI & TECH
Application of ZrGeO4
ActiveCN106311211AIncreased durabilityEfficient degradationWater contaminantsWater/sewage treatmentPollutantOrganic dye
The invention discloses application of ZrGeO4, and provides an application example of the ZrGeO4 for the first time. The ZrGeO4 is used as a catalyst; even under the room temperature condition of completely keeping away light, organic dye contaminants such as RhB (rhodamine B) and MB (methylene blue) can also be degraded. In the degradation experiments, the ZrGeO4 is repeatedly used for three times; the activity is not lowered; after the ZrGeO4 is continuously and repeatedly used for many times, activity can also be well maintained; the activity is not obviously lowered. The ZrGeO4 does not depend on illumination; the organic dye can be catalytically degraded under the room temperature condition; the durability is high; the popularization and the application are facilitated.
Owner:HUNAN UNIV OF SCI & TECH
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