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32 results about "Sodium chloroplatinate" patented technology
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Carbon-loaded Co core-Pt shell nanoparticle catalyst as well as preparation method thereof
ActiveCN103537299AHigh electrocatalytic activity for oxygen reductionImprove long-term stabilityMaterial nanotechnologyCell electrodesAlcohol fuelOxygen
The invention relates to the field of cathode catalysts of proton-exchange membrane fuel cells (comprising direct alcohol fuel cells, direct formic acid fuel cells and direct dimethyl ether fuel cells and the like), and provides a preparation method of a carbon-loaded Co core-Pt shell nanoparticle catalyst. Carbon-loaded Co@Pt nuclear shell nanoparticles are prepared by connecting sodium chloroplatinate on the surface of a pre-synthesized Co core through hydrogen-bond interaction by way of chemical reduction and heat treatment. The carbon-loaded Co core-Pt shell nanoparticles synthesized by the method are highly dispersed, and the grain size is 3-6.5nm. The mass ratio activity (0.5V vs.SCE) of the carbon-loaded Co core-Pt shell nanoparticles on catalytic oxygen reduction reaction at room temperature can reach 158.5mA.mg<-1>Pt to the maximum extent, and is superior to that of an industrial Pt / C catalyst (JM-3000). The catalyst can be applied to the field of cathode catalysts of proton-exchange membrane fuel cells.
Owner:铜陵鑫隆钢结构有限公司
Method for preparing low Pt loading capacity type fuel battery catalyst by utilizing MOF as template
ActiveCN108428906AIncrease profitSmall particle sizeMaterial nanotechnologyCell electrodesFuel cellsCobalt
The invention relates to a method for preparing a low Pt loading capacity type fuel battery catalyst by utilizing MOF as a template. The method comprises the following steps: dispersing cobalt nitrate, 2-aminoterephthalic acid and triethylene diamine in N,N-dimethyl formamide to obtain an MOF precursor mixing solution; preparing MOF according to a solvent heating method; washing; drying to obtainMOF powder; adding to a sodium chloroplatinate or chloroplatinic acid solution; stirring; dissolving; allowing standing still; washing; drying; performing high-temperature treatment and pickling underinsert atmosphere; centrifugally washing and drying the product; grinding to obtain the low Pt loading capacity type fuel battery catalyst. The method has the following advantages and beneficial effects: the Pt content in the catalyst is obviously decreased, so that the problem of high cost of the catalyst of a current fuel battery can be solved; low Pt loading capacity type catalyst is outstanding in catalyzing activity; the quality activity of the Ptd is increased by 2-5 times when being compared with that of the conventional commercial Pt / C catalyst.
Owner:WUHAN UNIV OF TECH
Preparing method of cube platinum ruthenium core-shell nanocrystalline and product of preparing method
ActiveCN105522168AUniform sizeGood dispersionTransportation and packagingMetal-working apparatusN dimethylformamideRuthenium
The invention relates to a preparing method of cube platinum ruthenium core-shell nanocrystalline. The preparing method comprises the following steps that firstly, ruthenium(III)2,4-pentanedionate, a platinum-containing compound and trioctylphosphine oxide are dissolved in a mixed solution of oleylamine and N,N-dimethylformamide, wherein the platinum-containing compound is chloroplatinic acid or sodium chloroplatinate; secondly, the mixed solution obtained in the first step is stirred to be subjected to the reaction for 30-600 min at the temperature of 180-250 DEG C; and thirdly, a product obtained in the second step is separated, and then sediment, namely the cube platinum ruthenium core-shell nanocrystalline is obtained. The invention further relates to the cube platinum ruthenium core-shell nanocrystalline prepared through the method. According to the preparing method, the cube platinum ruthenium core-shell nanocrystalline uniform in appearance and size is obtained through a one-step method, the obtained product is moderate in size and good in dispersibility, and the preparing method is simple.
Owner:ZHEJIANG UNIV
Electroplating process capable of improving surface smoothness of pressure-equalized electrode probe of high-voltage direct-current converter valve
ActiveCN107400910ALimited activityLimited diffusion coefficientJewelleryEthylenediamineHigh-voltage direct current
The invention discloses an electroplating process capable of improving surface smoothness of a pressure-equalized electrode probe of a high-voltage direct-current converter valve. The pretreated pressure-equalized electrode probe is put in an electroplating liquid for platinum plating treatment, the electroplating liquid is prepared from ingredients as follows: 0.001-6 mol / L of sodium tetrachloroplatinate or sodium chloroplatinate, 0.1-10 mol / L of ethylenediamine tetraacetic acid disodium salt or ethylenediamine tetraacetic acid tetrasodium salt; the pressure-equalized electrode probe serves as a work electrode, an annular platinum sheet serves as a counter electrode, and the pressure-equalized electrode probe is placed in the middle of the annular platinum sheet; the temperature of the electroplating liquid is 5-75 DEG C, the pH value of the electroplating liquid is 6-7.5, the electroplating current is 0.01-10 mA / cm<2>, and the plating layer on the surface of the pressure-equalized electrode probe is 0.1-5 mu m. The electroplating process is simple and easy to control, the activity of platinum ions and the diffusion coefficient of the platinum ions in the electroplating liquid are limited, so that the reduction reaction speed of platinum is controlled, and the surface smoothness of a platinum deposition layer is further controlled to reach the mirror surface.
Owner:GUIYANG BUREAU OF CHINA SOUTHERN POWER GRID CO LTD EHV TRANSMISSION CO +1
Cage porous platinum-palladium composite nanoparticle having excellent catalysis performance on methanol, and preparation method thereof
InactiveCN104888765AUniform particle sizeLarge specific surface areaMaterial nanotechnologyMetal/metal-oxides/metal-hydroxide catalystsCatalytic oxidationEngineering
The invention relates to a cage porous platinum-palladium composite nanoparticle and a preparation method thereof. The cage porous platinum-palladium composite nanoparticle has the characteristics of uniform scale, high specific surface area and good catalytic activity, and the components of the nanoparticle can be effectively regulated in a large range (a Pt / Pd molar ratio of 3-19). The complete preparation method of the nanoparticle comprises the following steps: 1, sequentially sodium tetrachloroplatinate, potassium tetrachloropalladate, hydrochloric acid, polyoxyethylene-polyoxypropylene-polyoxyethylene (P123) and ascorbic acid into an aqueous solution to obtain a reaction precursor solution; and 2, carrying out ultrasonic treatment on the precursor solution at 35DEG C for 4h, centrifuging at a rotating speed of 7000-10000r / min, and separating to obtain a black precipitate which is the platinum-palladium composite nanoparticle. The cage porous platinum-palladium composite nanoparticle prepared in the invention has important application values and wide application prospect in fuel cells, industrial catalysis, automobile tail gas purification, water splitting and carbon monoxide catalytic oxidation.
Owner:UNIV OF JINAN
Preparation method of efficient stable Pt/GC catalyst
ActiveCN108682874AImprove stabilityImprove corrosion resistanceMaterial nanotechnologyCell electrodesAlcoholRoom temperature
The invention relates to a preparation method of an efficient stable Pt / GC catalyst. The preparation method comprises the following steps: 1) evenly dispersing graphitized carbon into an alcohol-watersolution to prepare a graphitized carbon dispersion solution; 2) adding a Nafion solution into the alcohol-water solution, stirring evenly, adding chloroplatinic acid or sodium chloroplatinate solution, continuing to stir, and regulating the pH value; 3) enabling the mixed solution to condensate and reflow to prepare a Pt precursor sol; 4) adding the graphitized carbon dispersion solution into the Pt precursor sol, continuing to condensate and reflow, cooling an obtained Pt loaded graphitized carbon colloid to the room temperature after finishing the reaction, filtering and washing a product,and drying in vacuum to the constant weight to obtain the stable Pt / GC catalyst. The preparation method of the efficient stable Pt / GC catalyst has the following beneficial effects that: 1) the use ratio of Pt is increased; 2) Pt particles are enabled to be evenly stably distributed on a graphitized carbon carrier on the nanoscale; and 3) the catalyst is enabled to be more excellent in corrosion resistance and environment tolerance.
Owner:WUHAN UNIV OF TECH
Platinum/black phosphorus@carbon sphere methanol fuel cell anode catalyst and preparation method thereof
ActiveUS20200112033A1Improve electrocatalytic performanceLarge specific surface areaMaterial nanotechnologyCell electrodesPtru catalystOrganosolv
A platinum / black phosphorus@carbon sphere methanol fuel cell anode catalyst and preparation method thereof including the following steps: (1) dispersing a black phosphorus solid in an organic solvent to obtain a single or a few layers of black phosphorus dispersion with set concentration; (2) mixing the dispersion with glucose and stirring until dissolved; (3) performing a hydrothermal reaction on the solution to obtain an aqueous solution of the composite material containing a carbon core black phosphorus shell structure; (4) uniformly mixing the aqueous solution with an ethylene glycol solution of sodium chloroplatinate, adjusting the pH, then reducing the platinum on the surface by using a microwave irradiation heating method; and (5) filtering, washing and drying the obtained composite material to obtain a platinum / black phosphorus @carbon sphere composite material. The composite material is applied to a direct methanol fuel cell anode catalyst, the catalytic and stability performance of which are greatly improved.
Owner:QINGDAO UNIV
Method for deep hydrofinishing of lubricant base oil
ActiveCN103897728AGood aromatic saturationImprove performanceMolecular sieve catalystsMetal/metal-oxides/metal-hydroxide catalystsPotassiumSilicon oxide
The invention relates to a method for deep hydrofinishing of lubricant base oil. Based on the base oil produced by adopting a hydrogenation process, or using the base oil isodewaxed by hydrogenation as a raw material, the lubricant base oil with light and heat stability is produced. A catalyst comprises the following components in percent by weight: 40.0-99.9 percent of aluminum oxide, 0.0-60.0 percent of silicon oxide, and 0.1-1.0 percent of platinum and / or palladium; the aluminum oxide is selected from modified gamma-aluminum oxide and modified amorphous silica and alumina, the silicon oxide is selected from amorphous silica and alumina, platinum is selected from one or more of chloroplatinic acid, potassium chloroplatinate, ammonium chloroplatinate and sodium chloroplatinate, and palladium is selected from one or more of palladium chloride, palladium sulfate, ammonium tetrachloropalladate and potassium chloropalladite. According to the method, through deep hydrofinishing of the base oil produced by using a hydrogenation process, or aromatic hydrocarbon and olefin in the lubricant base oil isodewaxed by hydrogenation, the oxidation stability and light stability of a product are improved, the color of an oil product is improved, and the pour point of the product is not increased.
Owner:PETROCHINA CO LTD +1
Method for preparing Pt/C catalyst from platinum-containing waste catalyst
InactiveCN109126777AImprove stabilityGood dispersionMetal/metal-oxides/metal-hydroxide catalystsDispersityPolymer science
The invention belongs to the technical field of recycling of precious metal, and particularly relates to a method for preparing a Pt / C catalyst from a platinum-containing waste catalyst. The method comprises the following steps: roasting, oxidizing and filtering the platinum-containing waste catalyst to obtain a coarse chloroplatinic acid solution; then extracting and reversely extracting to obtain a sodium chloroplatinate solution; and finally mixing the sodium chloroplatinate solution with a carbon black carrier and reducing, filtering and drying to obtain the Pt / C catalyst. The Pt / C catalyst prepared by the method is good in dispersity and high in stability, high-valued reusing of the platinum-containing waste catalyst is realized, the process is simple, and industrialized application is facilitated.
Owner:UNIV OF SCI & TECH BEIJING
Solvent-free organic silicon release agent and preparation method thereof
The invention provides a solvent-free organic silicon release agent and a preparation method thereof. The solvent-free organic silicon release agent comprises the following raw materials: vinyl-terminated polydimethylsiloxane, vinyl-terminated polymethylvinylsiloxane, sodium methyl silicate, sodium ethyl silicate, methyl hydrogen silicone oil, acrylic acid, sodium chloroplatinate, 1,3-divinyltetramethyldisiloxane, sodium bicarbonate, ethanol, methyl salicylate, pentaerythritol and diphenylamine. The preparation method comprises the following steps: mixing sodium chloroplatinate, 1,3-divinyltetramethyldisiloxane, sodium bicarbonate and ethanol; heating the obtained mixture to be 70-80 DEG C; stirring for 10-20 min; adding the remaining ingredients after cooling to be 25-35 DEG C; uniformly stirring to obtain the solvent-free organic silicon release agent . The solvent-free organic silicon release agent is good in coating property, favorable in release effect and smooth in release surface, and the preparation method is simple in step, easy to control, easy for industrial production and low in production cost.
Owner:SUZHOU XINDEJIE ELECTRONICS CO LTD
Kaolin-modified mildew-resistant paperboard paint and preparation method thereof
InactiveCN106087570AGuaranteed mechanical propertiesFirmly attachedPaper coatingPaper/cardboardMiddle medullaPolystyrene
The invention discloses kaolin-modified mildew-resistant paperboard paint and a preparation method thereof. The preparation method comprises 1, putting Chinese herbal medicines into water and carrying out decoction to obtain Chinese herbal medicine extract, 2, under UV, carrying out activation treatment on kaolin, plant ash, sodium chloroplatinate and molybdenum disulfide to obtain an activator, 3, under acidic conditions, mixing the activator and amino acids and carrying out modification treatment to obtain a modified activator, 4, making an acrylic acid emulsion, polystyrene, dioctyl phthalate, alumina, boron nitride and sodium nitrite contact so the materials react, adding an emulsifier, the modified activator and the Chinese herbal medicine extract into the reaction product and carrying out mixing to obtain the kaolin-modified mildew-resistant paperboard paint. The Chinese herbal medicines comprise folium artemisiae argyi, Chinese yam, borneol, honeysuckle stem, ligusticum wallichii, ricepaperplant pith medulla tetrapanacis, radix angelicae sinensis, root of kudzu vine, trichosanthes bark and coptis root. The paint can be stably attached to the surface of a carton main body and has excellent waterproof and antibacterial performances.
Owner:铜陵锋帆彩色印务股份有限公司
Mould-proof paperboard coating modified based on expanded vermiculite and preparation method thereof
InactiveCN106087543AGuaranteed mechanical propertiesFirmly attachedFlexible coversWrappersPolystyreneUltraviolet lights
The invention discloses a mould-proof paperboard coating modified based on expanded vermiculite and a preparation method thereof. The method includes the steps that 1, Chinese herbal medicines are decocted in water to prepare a Chinese herbal medicine extracting solution; 2, expanded vermiculite, plant ash, sodium chloroplatinate and molybdenum disulfide are subjected to activation treatment to prepare an activation product in the presence of ultraviolet light; 3, the activation product and amino acid are mixed and then are subjected to modification treatment under the acidic conditions to prepare a modified activation product; 4, acrylic emulsion, polystyrene, dioctyl phthalate, aluminum oxide, boron nitride and sodium nitrite performs contact reaction, and then an emulsifier, the modified activation product and the Chinese herbal medicine extracting solution are mixed to prepare the mould-proof paperboard coating modified based on the expanded vermiculite, wherein the Chinese herbal medicines includes folium artemisiae argyi, grifola, borneol, fried perilla seeds, rhizoma alismatis, roots of hairy asiabell, gleditsia sinensis, kudzu vine roots, snake gourd peels and coptis chinensis. The coating can stably attach to the surface of a carton body and has excellent waterproof and antibacterial performance.
Owner:铜陵锋帆彩色印务股份有限公司
Method for preparing platinum nitrate solution by synergism of molten salt method and ultrasound
InactiveCN110422893AMeet market requirementsSimple processRuthenium/rhodium/palladium/osmium/iridium/platinum compoundsPlatinumNitrate
The invention discloses a method for preparing a platinum nitrate solution by synergism of a molten salt method and ultrasound. The method includes the following steps chlorinating a sponge platinum intermediate temperature molten salt to form sodium chloroplatinate, hydrolyzing to form sodium hexahydroxyplatinate, precipitating to obtain hydroxyplatinic acid, ultrasonically washing synergistically, and synthesizing platinum nitrate to prepare the platinum nitrate solution. In a preparation process, the preparation process is simpler without removing nitrate, the preparation process is stablein reaction, the product yield is high, residues of impurity ions such as sodium ions and chloride ions are controlled in an obtained product, the process flow of the method is simple, a synthesis process does not need to remove the nitrate, a synthesis process is stable in reaction, the yield of finished products is high, the content of the impurities is low, especially the content of the sodiumion and the chloride ion is less than 50 ppm, and industrialization is easy.
Owner:云南省环境科学研究院(中国昆明高原湖泊国际研究中心)
Kaolin modified mouldproof paper board and preparation method thereof
ActiveCN106087556AImprove waterproof performanceGood anti-mildew effectWater-repelling agents additionPaper coatingCardboardUltraviolet
The invention discloses a kaolin modified mouldproof paper board and a preparation method thereof. The preparation method comprises the following steps: 1) putting Chinese herbal medicines into water to be decocted, so as to obtain a Chinese herbal medicine extracting solution; 2) in presence of ultraviolet ray, carrying out activating treatment on kaolin, plant ash, sodium chloroplatinate and molybdenum disulfide, so as to obtain an activator; 3) under acidic condition, mixing the activator with amino acid, and then modifying, so as to obtain a modified activator; 4) carrying out contact reaction on acrylic emulsion, polystyrene, dioctyl phthalate, aluminium oxide, boron nitride and sodium nitrite, then adding an emulsifying agent, the modified activator and the Chinese herbal medicine extracting solution, and mixing, so as to obtain mouldproof paint; and 5) coating the mouldproof paint on the surface of a paper board body, and drying, so that the kaolin modified mouldproof paper board is obtained. The mouldproof paper board has excellent mechanical, waterproof and antibacterial properties.
Owner:铜陵锋帆彩色印务股份有限公司
Mould-proof medical stone modified paperboard and preparation method thereof
InactiveCN106087568AImprove waterproof performanceImprove antibacterial propertiesPaper coatingPaper/cardboardPolystyrenePaperboard
The invention discloses a mould-proof medical stone modified paperboard and a preparation method thereof. The method includes the steps that 1, Chinese herbal medicines are decocted in water to prepare a Chinese herbal medicine extracting solution; 2, medical stone, plant ash, sodium chloroplatinate and molybdenum disulfide are subjected to activation treatment to prepare an activation product in the presence of ultraviolet light; 3, the activation product and amino acid are mixed and then are subjected to modification treatment under the acidic conditions to prepare a modified activation product; 4, acrylic emulsion, polystyrene, dioctyl phthalate, aluminum oxide, boron nitride and sodium nitrite perform contact reaction, and then an emulsifier, the modified activation product and the Chinese herbal medicine extracting solution are mixed to prepare a mould-proof coating; 5, the mould-proof coating is coated on the surface of a paperboard body and is dried to prepare the mould-proof medical stone modified paperboard. The mould-proof medical stone modified paperboard has excellent mechanical, waterproof and antibacterial performance.
Owner:铜陵锋帆彩色印务股份有限公司
A method for detecting ancient silk fabrics
ActiveCN109187699BImprove solubilityAvoid damageMaterial analysis by electric/magnetic meansPolymer scienceSodium hydride
Owner:ZHEJIANG SCI-TECH UNIV
Synthetic method for vitamin drug intermediate diketogulonic acid
The invention discloses a synthetic method for the vitamin drug intermediate diketogulonic acid. The synthetic method comprises the following steps: adding 2,3,4,6-diketosorbomethyl ether and a butanesolution into a reaction vessel, increasing a solution temperature, adding lead tetraacetate and an aqueous solution, controlling a stirring speed and continuing a reaction; and raising the temperature, adding sodium chloroplatinate powder, carrying out a reaction, adding an oxalic acid solution, adjusting a pH value, lowering the temperature, carrying out standing to allow a solid to be precipitated, washing the solid with a potassium chloride solution, then washing the solid with a butyl ether solution, carrying out recrystallization in a 1,4-butanediol solution, and then carrying out dehydration with a dehydrating agent to obtain the finished diketogulonic acid.
Owner:CHENGDU KA DI FU TECH
Bentonite-modified mould-proof cardboard and preparation method thereof
ActiveCN105926369AImprove mildew resistanceImprove waterproof performanceNon-fibrous pulp additionFlexible coversCardboardSodium Bentonite
The invention discloses a bentonite-modified mould-proof cardboard and a preparation method thereof. The preparation method includes 1), decocting Chinese herbal medicines in water to obtain Chinese herbal medicine extract; 2), in the presence of ultraviolet rays, activating bentonite, plant ash, sodium chloroplatinate and molybdenum disulfide to obtain activators; 3), subjecting the activators and amino acids to modification under an acidic condition to obtain modified activators; 4), subjecting acrylic emulsion, polystyrene, dioctyl phthalate, aluminum oxide, boron nitride and sodium nitrite to contact reaction, and adding emulsifying agents, the modified activators and the Chinese herbal medicine extract into a reaction product with mixing to obtain a mould-proof coating; 5), applying the surfaces of a cardboard body with the mould-proof coating prior to drying so as to obtain the bentonite-modified mould-proof cardboard. The bentonite-modified mould-proof cardboard has the excellent mechanical, waterproof and antibacterial properties.
Owner:铜陵锋帆彩色印务股份有限公司
Anti-mildew cardboard modified by bentonite and preparation method thereof
ActiveCN105926369BImprove mildew resistanceImprove waterproof performanceNon-fibrous pulp additionFlexible coversCardboardPolystyrene
The invention discloses a bentonite-modified mould-proof cardboard and a preparation method thereof. The preparation method includes 1), decocting Chinese herbal medicines in water to obtain Chinese herbal medicine extract; 2), in the presence of ultraviolet rays, activating bentonite, plant ash, sodium chloroplatinate and molybdenum disulfide to obtain activators; 3), subjecting the activators and amino acids to modification under an acidic condition to obtain modified activators; 4), subjecting acrylic emulsion, polystyrene, dioctyl phthalate, aluminum oxide, boron nitride and sodium nitrite to contact reaction, and adding emulsifying agents, the modified activators and the Chinese herbal medicine extract into a reaction product with mixing to obtain a mould-proof coating; 5), applying the surfaces of a cardboard body with the mould-proof coating prior to drying so as to obtain the bentonite-modified mould-proof cardboard. The bentonite-modified mould-proof cardboard has the excellent mechanical, waterproof and antibacterial properties.
Owner:铜陵锋帆彩色印务股份有限公司
A kind of carbon-supported CO core-pt shell nanoparticle catalyst and preparation method thereof
ActiveCN103537299BHigh electrocatalytic activity for oxygen reductionImprove long-term stabilityMaterial nanotechnologyCell electrodesAlcohol fuelOxygen
The invention relates to the field of cathode catalysts of proton-exchange membrane fuel cells (comprising direct alcohol fuel cells, direct formic acid fuel cells and direct dimethyl ether fuel cells and the like), and provides a preparation method of a carbon-loaded Co core-Pt shell nanoparticle catalyst. Carbon-loaded Co@Pt nuclear shell nanoparticles are prepared by connecting sodium chloroplatinate on the surface of a pre-synthesized Co core through hydrogen-bond interaction by way of chemical reduction and heat treatment. The carbon-loaded Co core-Pt shell nanoparticles synthesized by the method are highly dispersed, and the grain size is 3-6.5nm. The mass ratio activity (0.5V vs.SCE) of the carbon-loaded Co core-Pt shell nanoparticles on catalytic oxygen reduction reaction at room temperature can reach 158.5mA.mg<-1>Pt to the maximum extent, and is superior to that of an industrial Pt / C catalyst (JM-3000). The catalyst can be applied to the field of cathode catalysts of proton-exchange membrane fuel cells.
Owner:铜陵鑫隆钢结构有限公司
A kind of platinum-ceramic composite powder and its preparation method and application
ActiveCN105195732BImprove compactnessImprove catalytic performanceMaterial electrochemical variablesPlatinumCeramic composite
The invention discloses platinum-ceramic composite powder as well as a preparation method and an application thereof and belongs to the field of metal and ceramic powder composite. The platinum-ceramic composite powder is spherical powder, the particle size distribution is 0.2-1.2 mu m, the average particle size is 0.45 mu m, the specific surface area is 20-45 m<2> / g, the bulk density is 0.5-1.2 g / cm<3>, and the tap density is 0.8-1.8 g / cm<3>. The preparation method of the platinum-ceramic composite powder comprises steps as follows: sensitized and activated ceramic powder is mixed with a sodium chloroplatinate solution, reduction is performed with a chemical reduction method, and the platinum-ceramic composite powder is prepared. The platinum-ceramic composite powder can be used as platinum electrode paste, and the performance of a platinum electrode prepared by sintering the powder on the ceramic surface is remarkably improved. The preparation method of the platinum-ceramic composite powder is simple and easy to implement, and industrial production is facilitated.
Owner:山东有研国晶辉新材料有限公司 +1
Mildew-resistant paperboard coating based on attapulgite modification and preparing method thereof
InactiveCN106087569AGuaranteed mechanical propertiesFirmly attachedPaper coatingPaper/cardboardActivated attapulgiteUltraviolet
Mildew-resistant paperboard coating based on attapulgite modification and a preparing method thereof are disclosed. The method includes 1) adding Chinese herbal medicines into water, and decocting to prepare a Chinese herbal medicine extract, 2) activating attapulgite, plant ash, sodium chloroplatinate and molybdenum disulfide under existence of ultraviolet ray to obtain activated compounds, 3) under an acidic condition, mixing the activated compounds with amino acids, and modifying to obtain modified activated compounds, and 4) subjecting acrylic acid emulsion, polystyrene, dicapryl phthalate, alumina, boron nitride and sodium nitrite to a contact reaction, adding an emulsifier, the modified activated compounds and the Chinese herbal medicine extract, and mixing to obtain the coating. The Chinese herbal medicines comprise argy wormwood leaves, bamboo leaves, borneol, rhizoma typhonii, Sichuan lovage rhizome, longstamen onion bulb, Chinese angelica, kudzu vine root, snakegourd peel and rhizoma coptidis. The coating can be stably attached to the surface of paperboard bodies, and has excellent waterproof and antibacterial properties.
Owner:铜陵锋帆彩色印务股份有限公司
An electroplating process that can improve the surface finish of the voltage equalizing electrode probe of a high-voltage direct current converter valve
ActiveCN107400910BLimited activityLimited diffusion coefficientJewelleryEthylenediamineHigh-voltage direct current
The invention discloses an electroplating process capable of improving surface smoothness of a pressure-equalized electrode probe of a high-voltage direct-current converter valve. The pretreated pressure-equalized electrode probe is put in an electroplating liquid for platinum plating treatment, the electroplating liquid is prepared from ingredients as follows: 0.001-6 mol / L of sodium tetrachloroplatinate or sodium chloroplatinate, 0.1-10 mol / L of ethylenediamine tetraacetic acid disodium salt or ethylenediamine tetraacetic acid tetrasodium salt; the pressure-equalized electrode probe serves as a work electrode, an annular platinum sheet serves as a counter electrode, and the pressure-equalized electrode probe is placed in the middle of the annular platinum sheet; the temperature of the electroplating liquid is 5-75 DEG C, the pH value of the electroplating liquid is 6-7.5, the electroplating current is 0.01-10 mA / cm<2>, and the plating layer on the surface of the pressure-equalized electrode probe is 0.1-5 mu m. The electroplating process is simple and easy to control, the activity of platinum ions and the diffusion coefficient of the platinum ions in the electroplating liquid are limited, so that the reduction reaction speed of platinum is controlled, and the surface smoothness of a platinum deposition layer is further controlled to reach the mirror surface.
Owner:GUIYANG BUREAU OF CHINA SOUTHERN POWER GRID CO LTD EHV TRANSMISSION CO +1
Expanded vermiculite modified anti-mold paperboard and preparation method thereof
InactiveCN106087542APaper coatingCorrosion-inhibiting/anti-oxidant agent additionPaperboardUltraviolet
Owner:铜陵锋帆彩色印务有限公司
A kind of preparation method of efficient and stable pt/gc catalyst
ActiveCN108682874BIncrease profitSmall particle sizeMaterial nanotechnologyCell electrodesPtru catalystAlcohol
The invention relates to a method for preparing a highly efficient and stable Pt / GC catalyst, comprising the following steps: 1) uniformly dispersing graphitized carbon in an aqueous alcohol solution to obtain a dispersed solution of graphitized carbon; 2) adding Nafion solution to the aqueous alcohol solution Stir evenly, add chloroplatinic acid or sodium chloroplatinate solution and continue stirring to adjust the pH value; 3) The mixed solution is condensed and refluxed to obtain the Pt precursor sol; 4) The graphitized carbon dispersion solution is added to the Pt precursor sol, and continue Condensation and reflux, after the reaction, cool the obtained Pt-loaded graphitized carbon colloid to room temperature, filter and wash the product, and vacuum-dry it to constant weight to obtain the obtained product. The invention has the following beneficial effects: 1) The utilization rate of Pt is improved. 2) Ensure that the Pt particles are uniformly and stably distributed on the graphitized carbon support in nanometer size. 3) It ensures that the catalyst has higher corrosion resistance and environmental tolerance.
Owner:WUHAN UNIV OF TECH
Kaolin-modified mildew-proof cardboard and preparation method thereof
ActiveCN106087556BImprove waterproof performanceGood anti-mildew effectWater-repelling agents additionPaper coatingCardboardPolystyrene
Owner:铜陵锋帆彩色印务股份有限公司
A method for supplementary refining of lubricating oil base oil by deep hydrogenation
ActiveCN103897728BImprove performanceImprove Oxidation StabilityMolecular sieve catalystsMetal/metal-oxides/metal-hydroxide catalystsPotassiumSilicon oxide
The invention relates to a method for deep hydrofinishing of lubricant base oil. Based on the base oil produced by adopting a hydrogenation process, or using the base oil isodewaxed by hydrogenation as a raw material, the lubricant base oil with light and heat stability is produced. A catalyst comprises the following components in percent by weight: 40.0-99.9 percent of aluminum oxide, 0.0-60.0 percent of silicon oxide, and 0.1-1.0 percent of platinum and / or palladium; the aluminum oxide is selected from modified gamma-aluminum oxide and modified amorphous silica and alumina, the silicon oxide is selected from amorphous silica and alumina, platinum is selected from one or more of chloroplatinic acid, potassium chloroplatinate, ammonium chloroplatinate and sodium chloroplatinate, and palladium is selected from one or more of palladium chloride, palladium sulfate, ammonium tetrachloropalladate and potassium chloropalladite. According to the method, through deep hydrofinishing of the base oil produced by using a hydrogenation process, or aromatic hydrocarbon and olefin in the lubricant base oil isodewaxed by hydrogenation, the oxidation stability and light stability of a product are improved, the color of an oil product is improved, and the pour point of the product is not increased.
Owner:PETROCHINA CO LTD +1
A kind of preparation method of fuel cell catalyst with low PT load using MOF as template
ActiveCN108428906BIncrease profitSmall particle sizeMaterial nanotechnologyCell electrodesPtru catalystEngineering
The invention relates to a method for preparing a low Pt loading capacity type fuel battery catalyst by utilizing MOF as a template. The method comprises the following steps: dispersing cobalt nitrate, 2-aminoterephthalic acid and triethylene diamine in N,N-dimethyl formamide to obtain an MOF precursor mixing solution; preparing MOF according to a solvent heating method; washing; drying to obtainMOF powder; adding to a sodium chloroplatinate or chloroplatinic acid solution; stirring; dissolving; allowing standing still; washing; drying; performing high-temperature treatment and pickling underinsert atmosphere; centrifugally washing and drying the product; grinding to obtain the low Pt loading capacity type fuel battery catalyst. The method has the following advantages and beneficial effects: the Pt content in the catalyst is obviously decreased, so that the problem of high cost of the catalyst of a current fuel battery can be solved; low Pt loading capacity type catalyst is outstanding in catalyzing activity; the quality activity of the Ptd is increased by 2-5 times when being compared with that of the conventional commercial Pt / C catalyst.
Owner:WUHAN UNIV OF TECH
Mildew-resistant paperboard coating based on bentonite modification and a preparing method thereof
InactiveCN106085046AGuaranteed mechanical propertiesFirmly attachedAntifouling/underwater paintsPaints with biocidesSodium BentoniteUltraviolet
Mildew-resistant paperboard coating based on bentonite modification and a preparing method thereof are disclosed. The method includes 1) adding Chinese herbal medicines into water, and decocting to prepare a Chinese herbal medicine extract, 2) activating bentonite, plant ash, sodium chloroplatinate and molybdenum disulfide under existence of ultraviolet ray to obtain activated compounds, 3) under an acidic condition, mixing the activated compounds with amino acids, and modifying to obtain modified activated compounds, and 4) subjecting acrylic acid emulsion, polystyrene, dicapryl phthalate, alumina, boron nitride and sodium nitrite to a contact reaction, adding an emulsifier, the modified activated compounds and the Chinese herbal medicine extract, and mixing to obtain the coating. The Chinese herbal medicines comprise argy wormwood leaves, hogfennel root, radix platycodonis, stir-fried perilla fruit, Sichuan lovage rhizome, tangshen, Chinese angelica, kudzu vine root, inula herb and rhizoma coptidis. The coating can be stably attached to the surface of paperboard bodies, and has excellent waterproof and antibacterial properties.
Owner:铜陵锋帆彩色印务股份有限公司
Platinum-palladium-nickel chamfered-octahedron porous nano-cage electrocatalyst and preparation method therefor
InactiveCN110586128AHigh yieldHigh activityMaterial nanotechnologyCell electrodesOctahedronPotassium
The invention relates to a platinum-palladium-nickel chamfered-octahedron porous nano-cage electrocatalyst. The platinum-palladium-nickel chamfered-octahedron porous nano-cage electrocatalyst is prepared through the following methods: uniformly mixing 1mg-100mg of F127 with 0.5mL-4.0mL of 20mM potassium chloroplatinate, 0.5mL-4.0mL of 20mM sodium chloroplatinate, 0.5mL-4.0mL of 20mM nickel chloride and 0.1mL-0.4mL of 6M hydrochloric acid under ultrasonic conditions; adding 2mL of 0.1M ascorbic acid solution, subjecting the mixed solution to standing for 0.5 to 8 hours in oil bath with a temperature of 95 DEG C, subjecting a final product to cyclic centrifuge washing with water and ethanol for three times, and carrying out drying for later use under room-temperature conditions; and dispersing the dried product in excessive concentrated nitric acid solution again, carrying out stirring for three days under room-temperature conditions, and carrying out washing, centrifuging and drying after a reaction ends up, thereby obtaining the platinum-palladium-nickel chamfered-octahedron porous nano-cage electrocatalyst. The material prepared by the method has excellent electrochemical oxygen reduction property.
Owner:ZHEJIANG UNIV OF TECH
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