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41 results about "Lanthanide nitrate" patented technology
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Denitration catalyst regeneration solution and preparation method thereof as well as catalyst regeneration method
ActiveCN103949291AGood water solubilityImprove catalytic performanceCatalyst regeneration/reactivationIonCopper nitrate
The invention discloses a denitration catalyst regeneration solution and a preparation method thereof as well as a catalyst regeneration method. The denitration catalyst regeneration solution comprises the following raw material ingredients in parts by weight: 4-6 parts of vanadyl oxalate, 0.08-0.10 part of cerium nitrate, 0.11-0.13 part of lanthanum nitrate, 0.05-0.07 part of copper nitrate, 0.4-0.6 part of silica sol ST-O and 95 parts of deionized water. The catalyst regeneration method comprises the following steps of firstly, evenly mixing vanadyl oxalate and the deionized water; then, feeding cerium nitrate, lanthanum nitrate and copper nitrate into mixed solution, and fully stirring until the mixture is completely dissolved; finally, feeding silica sol ST-O, and continuing to stir until homogeneous phase is obtained; and sequentially carrying out strong scavenging and ultrasonic cleaning on an inactivated denitration catalyst module, soaking the module in cleaning solution for 18-25 minutes, continuing soaking the module in the regeneration solution for 25-40 minutes, taking out the denitration catalyst module and drying. After the denitration catalyst regeneration solution and the catalyst regeneration method are adopted, the activity of the inactivated denitration catalyst can be efficiently recovered, and the temperature range of the catalyst activity is widened.
Owner:江苏万德环保科技有限公司
Sealing agent for aluminum and aluminum alloy anode oxide films and preparation method for sealing agent
InactiveCN102650068AGood sealingImprove closureSurface reaction electrolytic coatingRare earthBond strength
The invention discloses a sealing agent for aluminum and aluminum alloy anode oxide films and a preparation method for the sealing agent. The sealing agent comprises the following raw materials by lL: 15-20g of lanthanide nitrate, 0.6-0.8g of oxidizing agent, 0.25-0.3g of stabilizing agent and deionized water, wherein the additive amount of the deionized water is the amount of adding the deionized water until the volume is constant at 1L after the rest raw materials are mixed. According to the sealing agent disclosed by the invention, by utilizing the combined action of rare-earth metal and the oxidizing agent, porous layers of the anode oxide films can be effectively sealed, and the corrosion resistance of the anode oxide films is obviously improved. Meanwhile, the sealing agent disclosed by the invention does not contain chromium, nickel or fluorine, therefore, the human body cannot be harmed, and the environment cannot be polluted. The sealing agent is a green environmental-protection sealing agent. Moreover, the aluminum and aluminum alloy anode oxide films can be sealed at normal temperature, therefore, not only is the energy consumption reduced but also the operation convenient is improved. After being treated by the sealing agent disclosed by the invention, the aluminum and aluminum alloy anode oxide films are compact in surface structure, is in uniform golden yellow and is higher in bonding strength.
Owner:HEFEI UNIV OF TECH
Preparation method of zirconic acid lanthanum ceramic fiber
ActiveCN103553596ASmall diameterEvenly distributedInorganic material artificial filamentsFiberFilamentation
The invention relates to a preparation method of a zirconic acid lanthanum ceramic fiber. The method comprises the following steps: preparing a gel fiber through a colloidal sol centrifugal fiber forming technology by using zirconium nitrate as a zirconium source, lanthanum nitrate as a lanthanum source, citric acid as a chelating agent, and water as a solvent, and calcining the gel fiber to form the zirconic acid lanthanum ceramic fiber. A precursor prepared by the invention has stable colloidal sol property and is good in filamentation property with no need of adding a polymer spinning additive. The prepared zirconic acid lanthanum ceramic fiber is good in flexibility, compact in microstructure, good in phase stability an low in heat conductivity coefficient and can be used for high-temperature thermal-insulation material, and the crystal form of the zirconic acid lanthanum ceramic fiber is pyrochlore form.
Owner:SHANDONG UNIV
TiO#-[2] based photocatalyst used for organic matter natural light degradation and preparation method thereof
ActiveCN1593750AReduced band gapReduce consumptionCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsRare-earth elementHYDROSOL
The invention relates to titanium dioxide photocatalyst for natural light degradation of organic matter and its manufacturing method. The catalytic agent is composed with a lanthanide of the rare earth and the mixture of C element and a substratum of titanium dioxide. In the components, the mole content of lanthanide is 0.01%-5% and the C mole content is 0.01%-5%. C adulterates in the volume phase in order to replace the O of titanium dioxide; the rare earth element adulterates in the volume phase of titanium dioxide, or deposits in the surface, or the both. The catalytic agent is manufactured by the collosol and gelatinous way. The invention mixes the solution of fetrabutyl titanate, absolute alcohol and glacial acetic acid with the solution of absolute alcohol in the lanthanide nitrate. Under stirring the solution mentioned above, add the water solution of tetra butyl group ammonium hydroxide, in order to make the PH up to 4-6. Then after laying it until being the gel, make it be desiccated, abraded and roasted, so the photocatalyst can be required. The catalytic agent can be used for the natural light degradation of the organic matter, and has no impressed luminaire so that it can save energy.
![TiO#-[2] based photocatalyst used for organic matter natural light degradation and preparation method thereof](https://images-eureka.patsnap.com/patent_img/157ca9cc-e4f5-4422-afae-406cb68bff97/A20041004103900081.PNG "TiO#-[2] based photocatalyst used for organic matter natural light degradation and preparation method thereof")
![TiO#-[2] based photocatalyst used for organic matter natural light degradation and preparation method thereof](https://images-eureka.patsnap.com/patent_img/157ca9cc-e4f5-4422-afae-406cb68bff97/A20041004103900082.PNG "TiO#-[2] based photocatalyst used for organic matter natural light degradation and preparation method thereof")
![TiO#-[2] based photocatalyst used for organic matter natural light degradation and preparation method thereof](https://images-eureka.patsnap.com/patent_img/157ca9cc-e4f5-4422-afae-406cb68bff97/A20041004103900091.PNG "TiO#-[2] based photocatalyst used for organic matter natural light degradation and preparation method thereof")
Owner:NANJING UNIV OF TECH
Preparation method of catalyst for synthesizing methacrylic acid
ActiveCN102553624AHigh activityHigh mechanical strengthPhysical/chemical process catalystsOrganic compound preparationGas phasePhosphoric acid
The invention relates to a preparation method of a catalyst for synthesizing methacrylic acid. The preparation method comprises the following steps: preparing a heteropoly compound catalyst by adopting an ionic liquid and metal salt step-by-step precipitation method; performing a reaction on a molybdenum-containing compound, a vanadium-containing compound and phosphoric acid to obtain solution orslurry A; preparing imidazolium ionic liquid into solution B; preparing alkali metal nitrate, transition metal nitrate and lanthanide nitrate into mixed aqueous solution C; adding the B and the C into the A in a step-by-step precipitation and aging mode; and then obtaining the catalyst by concentrating, drying, forming and roasting. The catalyst prepared by the method has high activity and high selectivity for the reaction of preparing methacrylic acid by carrying out gas-phase oxidation on methylacrolein and has high mechanical strength and high thermochemical stability.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Method for determining contents of fluosilicic acid, hydrofluoric acid and nitric acid in etching acid
InactiveCN111855650AEasy to operateReliable resultsMaterial analysis by observing effect on chemical indicatorMaterial electrochemical variablesHexafluorosilicic acidLanthanum
The invention discloses a method for determining the contents of hydrofluoric acid, fluosilicic acid and nitric acid in etching acid through acid-base titration and complexometric titration. The method comprises the following steps: (1) adding potassium salt into a sample to precipitate fluosilicic acid, titrating supernatant by using a sodium hydroxide standard titration solution by taking phenolphthalein as an indicator, and calculating the total acidity of the sample solution; (2) adding potassium salt into the sample to precipitate fluosilicic acid, titrating fluorine ions in the solutionby using a lanthanum nitrate standard titration solution by taking a fluorine ion selective electrode as an indicating electrode, determining a reaction endpoint by using a secondary micro-commerce method, and calculating the content of hydrofluoric acid; (3) heating and hydrolyzing fluosilicic acid, titrating total fluorine in the solution by using a lanthanum nitrate standard titration solutionby taking a fluorine ion selective electrode as an indicating electrode, determining a reaction endpoint by using a secondary micro-commerce method, and calculating the content of fluosilicic acid byusing a subtraction method; and (4) obtaining the nitric acid content by subtracting the sum of the hydrofluoric acid content and the fluosilicic acid content from the total acidity.
Owner:QINGDAO UNIV OF SCI & TECH
In situ ligand generated and ligand crystallized lanthanide complex and its preparation method
InactiveCN102516278AEasy to synthesizeAvoid synthetic stepsGroup 3/13 element organic compoundsLuminescent compositionsFluorescenceQuinoline
An in situ ligand generated and ligand crystallized lanthanide complex has the following chemical formula: Ln3L4(NO3)2(H2O)2H3O, wherein Ln is lanthanide rare earth ion, L is an organic ligand 1,1-[7,7'-bis-(8-hydroxy negative ion quinoline)]. The organic ligand is in situ generated during the preparation process of a lanthanide coordination polymer and has the following molecular formula: [C20H14N2O2]2-. A preparation method of the lanthanide complex comprises the following steps of: 1) dissolving 8-hydroxyquinoline, lanthanide nitrate and sodium azide in ethanol, stirring and sealing in a hydrothermal kettle; and 2) insulating at 120-140 DEG C for two days and cooling to room temperature according to a program to obtain a bulky crystal, namely the target. The invention has the following advantages: the organic ligand which is directly obtained by a one-pot method participates in coordination to obtain the lanthanide complex; the synthesis of the ligand and the complex is simple and easy to operate; and the compound obtained has good fluorescence performance and magnetic function.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Preparation method of zinc oxide-metal organic framework composite antibacterial material
InactiveCN111034720AHigh antibacterial activityLarge specific surface areaBiocideDisinfectantsMetal-organic frameworkAntibacterial activity
The invention relates to a preparation method of a zinc oxide-metal organic framework composite antibacterial material. Lanthanide-series MOFs which are good in biological property and easy to prepareare adopted as a framework material; the MOFs-Ln is prepared from thiodiacetic acid (TDA) and lanthanide nitrate. Through two-step stripping, the particle sizes and porosity of the MOFs-Ln can be adjusted, so MOFs structures of different sizes are obtained; and then, zinc nitrate, sodium hydroxide and sodium chloride are used for growing ZnO NPs on the surface and in pores of the MOFs-Ln in an in-situ growth mode, so the ZnO NPs@MOFs-Ln material with good antibacterial performance can be obtained. The morphology and particle size of MOFs-Ln can be regulated and controlled by changing the content and reaction time of TDA and lanthanide nitrate and changing a stripping mode, so the subsequent growth size of ZnO NPs is influenced, and the generation of nanoscale ZnO particles with high antibacterial activity is limited; and the material has efficient antibacterial effects.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH
Preparation method of rare earth heat stabilizer
InactiveCN105968407AImprove thermal stabilitySimple processOrganic compound preparationCarboxylic acid salt preparationNitrateAqueous sodium hydroxide
The invention provides a preparation method of a rare earth heat stabilizer. The method comprises the following steps: (1) dissolving lanthanum nitrate and neodymium nitrate into ethanol, preparing a 2.4mol / L rare earth-ethanol solution, controlling the molar ratio of the lanthanum nitrate to the neodymium nitrate to be 0.78: 0.25, transferring the rare earth-ethanol solution into a reaction vessel, and heating up to 75-90 DEG C; (2) preparing a 1.2mol / L sodium hydroxide water solution, dripping the prepared sodium hydroxide water solution into the rare earth-ethanol solution, controlling the molar ratio of hydroxide ions to two rare earth cations to be 3: 1.03, and reacting for 10-20 minutes; (3) adding stearic acid into the reaction vessel for three times, wherein the amount of the stearic acid added for the first time is 50% of the total adding amount, the amount of the stearic acid added for the second time is 30% of the total adding amount, and the amount of the stearic acid added for the third time is 20% of the total amount; controlling the molar ratio of the stearic acid to the rare earth cations to be 3: 1.03, and reacting for 20-30 minutes; and (4) filtering the product, washing with water, drying, crushing and grinding to obtain the powdered stearic acid rare earth heat stabilizer. The method is simple in technology, less in three wastes and high in yield.
Owner:TIANJIN RUCHUANG NEW MATERIAL SCI & TECH
Preparation method of catalyst for synthesizing methacrylic acid
ActiveCN102553624BHigh activityHigh mechanical strengthPhysical/chemical process catalystsOrganic compound preparationGas phasePhosphoric acid
The invention relates to a preparation method of a catalyst for synthesizing methacrylic acid. The preparation method comprises the following steps: preparing a heteropoly compound catalyst by adopting an ionic liquid and metal salt step-by-step precipitation method; performing a reaction on a molybdenum-containing compound, a vanadium-containing compound and phosphoric acid to obtain solution or slurry A; preparing imidazolium ionic liquid into solution B; preparing alkali metal nitrate, transition metal nitrate and lanthanide nitrate into mixed aqueous solution C; adding the B and the C into the A in a step-by-step precipitation and aging mode; and then obtaining the catalyst by concentrating, drying, forming and roasting. The catalyst prepared by the method has high activity and high selectivity for the reaction of preparing methacrylic acid by carrying out gas-phase oxidation on methylacrolein and has high mechanical strength and high thermochemical stability.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Method adopting lanthanum for improving low-temperature resistance of ryegrass turf taking garbage compost as base material
The invention relates to a method adopting lanthanum for improving the low-temperature resistance of ryegrass turf taking garbage compost as base material. The method includes the steps as follows: adding 70g of compost in Petri dishes, weighing and sowing 1.5g of ryegrass seeds in each Petri dish, and enabling periods of sprouting and growth at the initial stage to be performed at the room temperature; keeping the indoor temperature of 18 to 28 DEG C and relative humidity of 40-60% in the compartment at the periods of sprouting and growth at the initial stage, and adding nitric acid lanthanum with the concentration of 0.2-0.4g*kg<-1> in the compost culture base material after the sowing is carried out for 16 days; and cultivating for 6 days after adding the nitric acid lanthanum, moving the Petri dishes in a lighting incubator for cold stress treatment, setting the temperature at days and nights as 15-10 DEG C, the lighting time as 9h, the illumination intensity as 100 and the experimental period as 34 days, and measuring all the stress resistance indexes after the cold stress is carried out for 3-9 days. The experimental result shows that the lanthanum treatment can induce that the ryegrass taking the garbage compost as base material generates the resistance to the low-temperature stress, thereby reducing the harm of low temperature in the ryegrass.
Owner:TIANJIN NORMAL UNIVERSITY
Preparation method of zirconic acid lanthanum ceramic fiber
ActiveCN103553596BSmall diameterEvenly distributedInorganic material artificial filamentsFiberSpinning
The invention relates to a preparation method of a zirconic acid lanthanum ceramic fiber. The method comprises the following steps: preparing a gel fiber through a colloidal sol centrifugal fiber forming technology by using zirconium nitrate as a zirconium source, lanthanum nitrate as a lanthanum source, citric acid as a chelating agent, and water as a solvent, and calcining the gel fiber to form the zirconic acid lanthanum ceramic fiber. A precursor prepared by the invention has stable colloidal sol property and is good in filamentation property with no need of adding a polymer spinning additive. The prepared zirconic acid lanthanum ceramic fiber is good in flexibility, compact in microstructure, good in phase stability an low in heat conductivity coefficient and can be used for high-temperature thermal-insulation material, and the crystal form of the zirconic acid lanthanum ceramic fiber is pyrochlore form.
Owner:SHANDONG UNIV
Catalyst for preparing H2 through conversion of methanol steam and application thereof
ActiveCN111013598AHigh activityImprove stabilityHydrogenHeterogenous catalyst chemical elementsPtru catalystCopper nitrate
The invention discloses a catalyst for preparing H2 through conversion of methanol steam and application of the catalyst. The catalyst comprises: a precursor for preparing a copper-cobalt bimetallic catalyst, namely a mixed solution of copper nitrate (Cu(NO3)2) and cobalt nitrate (Co(NO3)3); a cocatalyst precursor, namely a mixed solution of lanthanide nitrate (La(NO3)3) and potassium nitrate (KNO3); and a carrier, namely a mixture of pretreated multilayer carbon nanotubes (CNTs) and activated aluminum oxide (Al2O3). An alcohol thermal dissolving-roasting method is used to prepare the catalystcontaining 40-60% (w / w) of the active component copper, 10-20% (w / w) of the active component cobalt, 1-5% (w / w) of the cocatalyst component lanthanum and 1-5% (w / w) of the accelerator potassium, withthe balance being the mixed carrier consisting of the carbon nanotubes and the activated aluminum oxide. Under the conditions that a reaction temperature is 240-300 DEG C and a reaction pressure is 1.0-3.0 MPa when the catalyst is used in the methanol steam conversion, the space velocity of the catalyst per unit can reach 1,600-3,000 / g (catalyst).h or above, the conversion rate of methanol is 96-99% or above, and the consumption of raw material methanol is 0.38-0.40 kg for each standard cubic meter of a hydrogen product.
Owner:ZHEJIANG TIANCAIYUNJI TECH CO LTD
Novel green fluorescent powder with Tb<3> doped tungstate
The invention discloses novel green fluorescent powder with Tb<3> doped tungstate. The novel green fluorescent powder is chemically composed of (Gd0.9Tb 0.1) 2 (WO4) 3. The synthesis method of the fluorescent powder includes that lanthanide nitrate and a sodium tungstate solution are mixed according to chemometry to serve as parent salt solution which is moved to a reaction kettle after complete mixing, the parent salt solution is then put in an air dry oven for reaction for a certain time under high temperature and high pressure, and white precipitates are obtained; white precursor powder isobtained via centrifuging, cleaning and drying on the basis of the white precipitates, and finally, the novel green fluorescent powder with Gd2 (WO4) 3: Tb<3+> is obtained via calcination. The prepared fluorescent powder is good in green emission, energy transfer effect exists among Gd<3+>->Tb<3+>, light intensity of Tb<3+> can be enhanced remarkably, and the novel green fluorescent powder is expected to be a lighting display material of the new generation.
Owner:UNIV OF JINAN
Preparation method of La modified Cu-SSZ-13 molecular sieve
PendingCN111498865AImprove catalytic performanceGood choiceGas treatmentMolecular sieve catalystsMolecular sievePtru catalyst
Owner:济南工程职业技术学院
Lead zirconate titanate film for next-generation high-speed communication and preparation method and application thereof
ActiveCN112723754AEasy to operateReduce energy consumptionCoatingsLead zirconate titanateBeam splitter
The invention discloses a lead zirconate titanate film for next-generation high-speed communication and a preparation method and application thereof. The material of the device is based on a lanthanide nitrate seed crystal layer, a lead zirconate titanate precursor solution is prepared by a sol-gel method, a PZT crystal film is prepared by spin coating and annealing, and the perovskite type PZT single-phase crystal film with uniform and compact structure and dominant orientation can be obtained. The method is simple in operation, low in energy consumption and low in cost, the grown film is a pure perovskite type single-phase crystal film, the transparency is high, the film is resistant to high temperature, the thickness and the size of the film are easy to adjust, and the requirements of various electro-optical modulation devices can be met. The film lead zirconate titanate prepared by the method has a nonlinear effect, an electro-optical effect, a piezoelectric effect, a thermoelectric effect and the like, and can be used for preparing devices such as an optical waveguide, an optical switch, a beam splitter / combiner, a piezoelectric modulator, a thermoelectric modulator, an electro-optical modulator and the like in an integrated photon loop.
Owner:聚合电光(杭州)科技有限公司
kind of la@zr@sio 2 Preparation method of @bentonite composite phosphorus removal adsorbent
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
Catalyst for preparing H2 by direct cracking of methanol, and preparation method and application of catalyst
PendingCN111167462AHigh activityImprove stabilityHydrogen separationCatalyst activation/preparationPtru catalystCopper nitrate
The invention discloses a catalyst for preparing H2 through direct cracking of methanol and application of the catalyst. According to the composition of the catalyst, a precursor for preparing the copper-cobalt bimetallic catalyst is a mixed solution of copper nitrate and cobalt nitrate; ae cocatalyst precursor is a mixed solution of lanthanide nitrate and potassium nitrate; a carrier is a mixtureof pretreated multilayer carbon nanotubes and magnesium oxide. The catalyst comprises 20-30% (w / w) of copper serving as an active component, 10-20% (w / w) of cobalt serving as another active component, 1-10% (w / w) of lanthanum serving as a co-catalytic component and 1-5% (w / w)of potassium serving as an accelerant, with the balance being the mixed carrier composed of the carbon nanotubes and magnesium oxide; and the catalyst is prepared through an alcohol heating-roasting method. According to the invention, methanol is directly cracked to prepare hydrogen, the conversion rate of methanol exceeds 95%, and the selectivity of H2 and CO exceeds 95%.
Owner:SICHUAN TECHAIRS
Preparation method of pearl wool particles for pillow inner material
The invention discloses a preparation method of pearl wool particles for a pillow inner material, and the method comprises the following steps: (1) uniformly mixing a sodium silicate solution and a sodium bicarbonate solution to obtain a silica gel sol system, and adding polyvinyl alcohol, tricalcium phosphate, the sodium silicate solution and the sodium bicarbonate solution to obtain a silica gelgel system; (2) adding a cobalt naphthenate and lanthanum nitrate solution into the silica gel gel system, and reacting to obtain an antibacterial agent; and (3) adding low-density high-pressure polyethylene, talcum powder and polylactic resin into an extruder, pumping butane, an antibacterial agent, carvacrol and monoglyceride into the extruder, reacting to form a foaming body, extruding, drawing and cutting the foaming body to obtain pearl wool, and treating the pearl wool by adopting a home textile pearl wool machine to obtain the pearl wool particles for the pillow inner material. The prepared pillow inner material is excellent in softness, resistant to dirt and particularly remarkable in antibacterial effect, and does not mildew after being used for a long time.
Owner:合肥市兴烨包装材料有限公司
Waste water organic pollutant degradation system based on perovskite three-dimensional electrode
ActiveCN114195228AImprove degradation efficiencyImprove surface activityWater contaminantsWater/sewage treatmentElectrochemical responseChemical reaction
The invention provides a wastewater organic pollutant degradation system based on a perovskite three-dimensional electrode, which comprises a three-dimensional electrochemical reactor, wastewater containing organic pollutants is degraded in a tank body of the three-dimensional electrochemical reactor under the action of an electric field generated between an anode plate and a cathode plate of the three-dimensional electrochemical reaction, and a perovskite type particle electrode material is filled between the cathode plate and the anode plate of the tank body. The perovskite type particle electrode is an activated carbon particle electrode loaded with perovskite type oxide on the surface, the preparation raw materials of the perovskite type particle electrode comprise lanthanum nitrate, ferric nitrate, citric acid and water, and activated carbon is mixed before gel is formed. By preparing the perovskite type particle electrode material and using the perovskite type particle electrode material in the three-dimensional electrochemical reactor, the degradation efficiency of the three-dimensional electrochemical reactor on organic pollutants in wastewater can be improved.
Owner:CENT SOUTH UNIV
Bacterium preservation culture medium and preparation method thereof
PendingCN113684152AGuaranteed survivalGrowth inhibitionBacteriaMicroorganism preservationBiotechnologyWarfarin Sodium
The invention relates to the technical field of strain preservation, in particular to a bacterium preservation culture medium and a preparation method thereof. The culture medium comprises the following components: based on 1000ml of the culture medium, 8 to 13 g of beef extract, 2 to 6 g of peptone, 0.2 to 0.5 g of cholate, 0.2 to 0.3 g of aluminum potassium sulfate, 2 to 5 g of malt extract powder, 3 to 7 g of yeast extract powder, 0.3 to 0.6 g of sodium chloride, 5 to 10 g of agar, 0.2 to 0.5 g of soluble ferric salt, 0.01 to 0.05 g of a calcium supplement, 0.02 to 0.05 g of D-cycloserine, 0.001 to 0.004 g of argentein, 0.01 to 0.02 g of vitamin K1, 0.1 to 0.3 g of casein phosphopeptides, 3 to 5 g of glucose, 1 to 2.5 g of lanthanum nitrate, 3 to 5 g of erythritol, 18 to 23 ml of glycerin, 0.1 to 0.2 mg of warfarin sodium tablets, 8 to 12 mg of isoniazide, and 75 to 85 ml of sterile defiberized sheep blood. The formula of the culture medium is rich and comprehensive in nutrient substances, the survival of the strain can be ensured, and the culture medium can still ensure the effectiveness of the strain even if the preservation environment temperature is greatly changed.
Owner:贵州安康医学检验中心有限公司
Bacteria transfer and preservation culture medium used in transfer process and preparation method thereof
PendingCN113150995AWith balancePhysiological properties unchangedMicroorganism preservationBiotechnologyCALCIUM LACTOBIONATE
The invention discloses a bacteria transfer and preservation culture medium used in the transfer process and a preparation method thereof. The culture medium comprises the following components: beef extract, peptone, sodium chloride, agar, glycerol, aluminum potassium sulfate, malt extract powder, yeast extract powder, ferric ammonium sulfate, calcium lactate, D-cycloserine, argutone, vitamins, casein phosphopeptides, glucose, lanthanum nitrate, erythritol, sterile defiberized sheep blood and distilled water. The preparation method comprises the steps: adding corresponding parts of culture medium components into the corresponding distilled water, dissolving, uniformly mixing, sterilizing at a high pressure, sub-packaging, and preserving and transferring bacteria in the transfer process through the culture medium. The physiological characteristics of a to-be-detected bacterial sample can be well maintained to be basically unchanged, the effects of enriching bacteria and preventing infectious microbe pollution can be further achieved, and compared with a conventional culture medium, the culture medium disclosed by the invention is high in detection rate, low in pollution, satisfied in clinical application effect and good in transfer effect; and the detection positive rate of the microbial sample is greatly improved.
Owner:贵州安康医学检验中心有限公司
A kind of method for preparing slyton perovskite type nitrogen oxide powder
InactiveCN104085924BHigh purityLow impurity contentTantalum compoundsLanthanum(III) chlorideYttrium chloride
Owner:BOHAI UNIV
A kind of preparation method of multi-component composite rare earth oxide with high conductivity layered structure
ActiveCN112408481BIncrease concentrationGood electrical and thermal conductivityMaterial nanotechnologyMolybdeum compounds preparationTetrachlorideFreeze-drying
The invention relates to a conductive multi-element composite oxide, and aims to provide a preparation method of a multi-element composite rare earth oxide with a highly conductive layered structure. Including: using citric acid and structure inducer X as solute, using gel accelerator and deionized water as solvent to prepare precursor solution A; using lanthanum nitrate and tin tetrachloride pentahydrate as solute, using deionized water as solvent , to prepare precursor solution B; add precursor solution A dropwise to precursor solution B to form a uniform transparent solution, and continue to react under stirring to obtain a uniform sol; after aging to form a wet gel, then vacuum freeze-drying treatment, The multi-component complex oxide block is prepared; after grinding, sieving and calcining, the multi-component complex rare earth oxide with high conductivity layered structure is obtained. The product obtained by the present invention has a multi-microchannel layered structure, which can increase the concentration of electron-hole pairs in the multi-element composite oxide phase and improve its electrical and thermal conductivity. The reaction synthesis conditions are simple, the cost is low, and it is favorable for large-scale production.
Owner:ZHEJIANG UNIV
Bi<3+>-doped fluorescent powder for enhancing Ce<3+> yellow luminescence
InactiveCN110041933AGood monodispersityStrong fluorescenceLuminescent compositionsChemical compositionCentrifugation
The invention relates to Bi<3+>-doped fluorescent powder for enhancing Ce<3+> yellow luminescence. The invention discloses the Bi<3+>-doped (Gd, Y)AG fluorescent powder for enhancing Ce<3+> yellow luminescence, and a chemical composition formula of the (Gd, Y)AG fluorescent powder is (Gd0.74Y0.2Bi0.05Ce0.01)3Al5O12((Gd0.74Y0.2Bi0.05Ce0.01)AG). A synthesis method of the series of fluorescent powderis characterized by comprising the following steps: mixing a lanthanide nitrate solution and an aluminum nitrate solution to prepare a mother salt solution according to a stoichiometric proportion, mixing with an ammonium hydrogen carbonate precipitant solution to obtain suspension, performing centrifugation, water washing and drying to obtain a white precursor, and finally calcining to obtain the (Gd0.74Y0.2Bi0.05Ce0.01)AG yellow fluorescent powder. The fluorescent powder prepared by the invention is simple in obtaining method, uniform in morphology, good in dispersibility and excellent in fluorescent performance.
Owner:UNIV OF JINAN
Microemulsion method for preparing nanometer cathode Ln2NiO4 of solid oxide fuel cell
InactiveCN103117398BImprove catalytic performanceThe preparation method is simple and easyCell electrodesOil phaseSurface-active agents
The invention discloses a microemulsion method for preparing nanometer cathode Ln2NiO4 of a solid oxide fuel cell, which relates to a preparation method of cathode material Ln2NiO4 of a solid oxide fuel cell, and aims to solve the problems of poor chemical stability and high polarization resistance of a cathode material of an existing solid oxide fuel cell. The preparation method comprises the following steps of: (1) mixing and stirring an oil phase, a surface active agent and a cosurfactant to obtain a solution, and dividing the solution into two equal parts; (2) dissolving soluble lanthanide nitrate and nickel nitrate in water, and adding an obtained solution into a solution obtained in the step (1); (3) dissolving alkali into water, and adding an obtained alkali solution into the other solution obtained in the step (1), thereby obtaining microemulsion; and (4) mixing the two microemulsion, centrifuging and washing the microemulsion to obtain a solid-phase matter, and sintering the solid-phase matter at a high temperature to obtain the nanometer cathode Ln2NiO4. The polarization resistance of the nanometer cathode Ln2NiO4 is 0.5ohm.cm<2>, and the chemical stability of the nanometer cathode Ln2NiO4 is good. The microemulsion method provided by the invention is mainly applied to cathodes of solid oxide fuel cells.
Owner:HEILONGJIANG UNIV
Preparation method of LaAlO3 nanofiber, product of preparation method and application of LaAlO3 nanofiber
InactiveCN112501717AUniform and continuousSmall sizeHybrid capacitor electrodesInorganic material artificial filamentsSpinningElectrospinning
The invention discloses a preparation method of a nanofiber. The preparation method comprises the following steps: a, dissolving 0.1458-0.4374 part of lanthanum nitrate and 0.1263-0.3789 part of aluminum nitrate in 5-15 parts of N,N-dimethylformamide, and adding 0.825-2.475 parts of polyvinylpyrrolidone to obtain an electrostatic spinning precursor solution; b, preparing a La(NO3)2 / Al(NO3)3 / PVP precursor fiber by an electrostatic spinning method; and c, drying and sintering at the temperature of 730-850 DEG C to obtain the LaAlO3 nanofiber. The invention further discloses the obtained LaAlO3 nanofiber and application of the LaAlO3 nanofiber in a supercapacitor electrode. The LaAlO3 nanofiber prepared by the method is uniform and continuous in thickness, the diameter is 50-80 nm, the fibersize is greatly reduced, the specific surface area is increased, and the electrochemical performance of the LaAlO3 fiber material is favorably improved.
Owner:JIANGSU UNIV OF SCI & TECH
Modifying agent used for PE waste plastic recycle
The invention discloses modifying agent used for PE waste plastic recycle. The modifying agent comprises polyethylene-maleic anhydride, epoxy resin, terpene resin, urea resin, epoxidized soybean oil,triethanolamine, silane coupling agent and lanthanide nitrate. The modifying agent is used for reprocessing of PE waste plastic, can effectively improves overall quality of the PE plastic, promotes the PE plastic to recover to process and use performances of the original plastic, promotes sound development of a reprocessing industry of the PE waste plastic, and has great population and use values.
Owner:太和县亚美达塑业有限公司
A kind of preparation method of high-efficiency air adsorption material
ActiveCN108160052BMany surface active groupsLarge specific surface areaOther chemical processesDeodrantsPlant fibreProcess engineering
The invention discloses a preparation method of a high-efficiency air absorbing material. The preparation method comprises the following steps: (1) after slurry is subjected to refining treatment, de-liquoring and concentrating, adding a sodium hydroxide solution in a concentrated solution, mixing and stirring, increasing the temperature to 80 DEG C, reacting for 1 hour and then neutralizing and concentrating to 25 percent by weight of fiber pulp; (2) adding a silver nitrate and lanthanum nitrate mixed solution for fully mixing and then defiberizing to obtain micro-filament plant fiber slurry;(3) stirring and mixing the fiber pulp and fermentation mother liquor, introducing acetobacter xylinum for aerated culture, adding the micro-filament plant fiber slurry for uniform stirring and performing static culture to obtain bacterial cellulose cross-linked colloidal liquid; (4) in the colloidal liquid, adding a filling agent for uniform stirring, then adding a NaOH solution and after treatment, filtering, cleaning and granulating. The high-efficiency air absorbing material prepared by the preparation method disclosed by the invention realizes super adsorption ability to PM2.5 and otherharmful particles, meanwhile has a sterilizing effect and is natural and environmentally friendly in raw material, and simple and mild in preparation conditions.
Owner:桐源(上海)网络技术有限公司
Sealing agent for aluminum and aluminum alloy anode oxide films and preparation method for sealing agent
InactiveCN102650068BGood sealingImprove closureSurface reaction electrolytic coatingRare earthBond strength
The invention discloses a sealing agent for aluminum and aluminum alloy anode oxide films and a preparation method for the sealing agent. The sealing agent comprises the following raw materials by lL: 15-20g of lanthanide nitrate, 0.6-0.8g of oxidizing agent, 0.25-0.3g of stabilizing agent and deionized water, wherein the additive amount of the deionized water is the amount of adding the deionized water until the volume is constant at 1L after the rest raw materials are mixed. According to the sealing agent disclosed by the invention, by utilizing the combined action of rare-earth metal and the oxidizing agent, porous layers of the anode oxide films can be effectively sealed, and the corrosion resistance of the anode oxide films is obviously improved. Meanwhile, the sealing agent disclosed by the invention does not contain chromium, nickel or fluorine, therefore, the human body cannot be harmed, and the environment cannot be polluted. The sealing agent is a green environmental-protection sealing agent. Moreover, the aluminum and aluminum alloy anode oxide films can be sealed at normal temperature, therefore, not only is the energy consumption reduced but also the operation convenient is improved. After being treated by the sealing agent disclosed by the invention, the aluminum and aluminum alloy anode oxide films are compact in surface structure, is in uniform golden yellow and is higher in bonding strength.
Owner:HEFEI UNIV OF TECH
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