172 results about "Platinum oxide" patented technology

A method for forming a platinum film includes providing a substrate, sputtering a crystalline platinum oxide layer over at least a portion of the substrate, and reducing the crystalline platinum oxide layer to form the platinum film. A device includes a non-conductive substrate and a platinum layer having a density of between about 2 and 5 g/cm3 formed over at least a portion of the non-conductive substrate. The platinum films produced in accordance with the present invention provide porous films suitable for use as electrodes, yet require few processing steps. Thus, such films are less costly. Such films may be formed on both conductive and non-conductive substrates. While the invention has been illustrated with platinum, other metals, such as noble metals, that form a low density oxide when reactively sputtered may also be used.

The invention discloses a thermostable white nano far-infrared ceramic powder and a preparation method thereof. The thermostable white nano far-infrared ceramic powder is prepared from the following components in percentage by weight: 20-30% of nano alumina, 3-8% of nano magnesia, 15-25% of nano monox, 10-20% of nano zirconia, 15-25% of nano zinc oxide, 7-10% of nano titanium oxide, 1-3% of nano rare earth oxide and 0.1-0.3% of nano precious metal oxide. In the invention, the nano rare earth oxide is one of yttrium oxide or lanthana or cerium oxide, and the nano precious metal oxide is one of platinum oxide or palladium oxide. The nano far-infrared ceramic powder can be subjected to subsequent processing at the high temperature of 1300-1450 DEG C, without reduction of radiance and radiation intensity, wherein the radiance can reach 0.90-0.94, and the nano far-infrared ceramic powder is white and can be widely applied to far-infrared household porcelain, wall and floor tiles, heating ceramic plates and high-temperature coating.

The invention discloses a catalyst for preparing alcohol through hydrogenation of acetic acid, and a preparation method of the catalyst. The catalyst is a multicomponent load catalyst and comprises ingredients a, b and c, and a carrier, wherein the ingredient a is one or more of calcium, potassium, sodium, barium, strontium, calcium oxide, potassium oxide, sodium oxide, barium oxide and strontium oxide; the ingredient b is one or more of tin, cobalt, molybdenum, nickel, iron, tin oxide, cobalt oxide, molybdenum oxide, nickel oxide and iron oxide; the ingredient c is one of platinum, palladium, ruthenium, rhodium, platinum oxide, palladium oxide, ruthenium oxide and rhodium oxide; the carrier is silicon dioxide, cerium dioxide, titanium dioxide, graphite, aluminum oxide or active carbon; and the mass ratio of the ingredient a to the ingredient b to the ingredient c to the carrier is (1-20):(0.5-2):(0.5-1):100. The multicomponent load catalyst is prepared by a multistep impregnation method, and used for preparing alcohol through the hydrogenation of acetic acid, and results prove that the catalyst is excellent in catalytical performance, long in service life and high in reaction stability.

Provided is a hydrophobic catalyst layer for a polymer electrolyte fuel cell to which hydrophobicity is imparted so that the dissipation property of produced water is improved and which simultaneously has an increased effective surface area and an increased utilization ratio of a catalyst, and a method of producing the same. The catalyst layer for a polymer electrolyte fuel cell includes a catalyst obtained by reducing a platinum oxide, a hydrophobic agent, and a proton conductive electrolyte, wherein the hydrophobic agent is mainly composed of alkylsiloxane. An Si compound containing a hydrophobic substituent is brought into contact with a platinum oxide to subject the Si compound to hydrolysis and a polymerization reaction by the catalytic action of the platinum oxide, and then it is reduced, thereby obtaining a hydrophobic catalyst layer carrying an alkylsiloxane polymer.

The invention discloses a catalyst for purification of waste incineration flue gas. The catalyst takes vanadium oxide, platinum oxide and tungsten oxide as active components, gamma-alumina, titanium oxide and carbon nanotubes as carriers and one or more of manganese oxide, iron oxide, copper oxide, tin oxide and cerium oxide as active aids. The catalyst has the functions of decomposing dioxin andchlorobenzene compounds and functions of denitration and sulfur resistance and still has excellent removal capacity for dioxin and NOx at lower temperature. The invention also discloses a preparationmethod of the catalyst for purification of waste incineration flue gas. The preparation method has the advantages of being simple to operate, convenient, controllable and suitable for mass industrialproduction.

The invention discloses a functional hyperbranched polymer supported platinum catalyst, a preparation method and application thereof. The preparation method has a technical scheme of: dissolving chloroplatinic acid or chloroplatinate into an organic solvent; then adding a terminal carboxyl group or terminal hydroxyl group hyperbranched polymer and a certain quantity of sodium bicarbonate into the organic solvent, and uniformly mixing the mixture; performing ultrasonic treatment on the mixture under the power of 700 to 1,200 W for 10 to 20 min; stirring and reacting at 30 to 90 DEG C for 1 to 6h under a nitrogen condition; and standing the mixture for 6 hours at the room temperature, vaporizing the solvent under a vacuum condition to obtain loosened powder, washing the obtained loosened powder with distilled water, drying the powder in vacuum to obtain the functional hyperbranched polymer supported platinum catalyst. The functional hyperbranched polymer supported nanometer platinum oxide catalyst prepared by the method is uniformly dispersed in a functional hyperbranched polymer carrier. The catalyst prepared by the method has the advantages of high catalytic activity, easy separation and the like in a hydrosilation addition reaction, simple production process, low cost and easy industrialization.

A transalkylation catalyst for increasing the output of C8 arylhydrocarbon contains the hydrogen-type zeolite containing SiO2/Al2O3 (20-90 Wt portions), adhesive (10-80) and platinum oxide (0.001-5).

The present invention is directed toward a method of reducing contamination of a glass melt in a stirring apparatus by an oxide material. The oxide material, such as platinum oxide, may be volatilized by the high temperature of the glass melt, and then condense on the inside surfaces of a stirring vessel, particularly the stirrer shaft and surrounding surfaces of the stirring vessel cover. A build-up of condensed oxide material may then be dislodged and fall back into the glass melt. Accordingly, an apparatus and method is provided that includes a heating element disposed adjacent an annular gap between the stirring vessel cover and the stirrer shaft. The heating element heats a surface of the stirring vessel cover bounding the annular gap and prevents condensation of volatile oxides that may flow through the annular gap.

The invention discloses an efficient air purification type photocatalyst filter screen. The efficient air purification type photocatalyst filter screen comprises a filter screen base material; a photocatalyst is arranged on the filter screen base material; the photocatalyst is prepared from the following components: titanium dioxide, molybdenum oxide, cerium oxide, lanthanum oxide, nickel oxide, platinum oxide, silicon dioxide, nano tin dioxide, silica gel power, aluminum oxide, sepiolite, iron acetylacetonate and terpyridine ruthenium chloride. The photocatalyst filter screen prepared by the invention has a good adhesion property and a relatively large reaction contact area; the removing rates of acetaldehyde, benzene and formaldehyde are more than 90 percent and the photocatalytic property is very good; the efficient air purification type photocatalyst filter screen is high in utilization rate of catalyst and stable in property and has very good application value.

The invention relates to a titanium-based tin-antimony-platinum oxide electrode material and a preparation method thereof. The preparation method comprises the steps of pretreating a titanium matrix, plating tin, coating an active layer and sintering, wherein the active layer is antimony-platinum coating liquid; and the constitution of the antimony-platinum coating liquid is characterized in thatSbCl3:H2PtCl6.6H2O:36wt% HCl:n-butyl alcohol=0.1g:(0.01-0.03g):1ml:5ml. A titanium-based tin-antimony-platinum oxide electrode provided by the invention has high oxygen evolution potential and is suitable for the treatment of organic waste water which is difficult to degrade; meanwhile, the electrode can be used for better catalyzing the reaction for generating apersulfate radical (S2O8<2->) froma sulfate radical (SO4<2->); and under the condition of same power consumption and same electrolyte, the output of S2O8<2-> is 30-35% higher than that of the titanium-based tin-antimony (Ti/Sn-Sb) oxide electrode.

The invention discloses a preparation method of perdeuterated methanol. The preparation method comprises the following step: taking deuterium and carbon monoxide to react in the presence of a catalystunder conditions that the reaction pressure is 1 to 10Mpa and the reaction temperature is 150 to 550 DEG C, so as to generate the perdeuterated methanol, wherein the feeding volume ratio of the deuterium to the carbon monoxide is 1 to (1 to 10) and the catalyst is selected from one or a combination of more of gold oxide, platinum oxide and rhodium oxide. The preparation method of the perdeuterated methanol, disclosed by the invention, has the advantages of moderate reaction conditions, high reaction yield and simple technological operation.

The present invention provides a catalyst and a material for formaldehyde decomposition. The catalyst comprises manganese dioxide, alumina, silica, copper oxide, platinum oxide and magnesia, wherein the weight ratio is: manganese dioxide: alumina: silica: copper oxide: platinum oxide: magnesia = 100:9-15:5-7:3-7:0.5-2:1-3. The material for formaldehyde decomposition comprises the catalyst and a carrier. The doped manganese dioxide catalyst of the present invention can significantly improve the persistence of the manganese dioxide during the formaldehyde decomposition and absorb part of the resultant carbon dioxide. In addition, by adopting a unique non-adhesive agglutination process, the invention can load the doped manganese dioxide catalyst on a carrier, and prepare the material with a formaldehyde degradation rate of above 90% in a short period under natural environment of normal temperature and normal pressure; achieves the advantages of high efficiency and stable degradation efficiency; and can be utilized circularly.

The invention provides a synthesis intermediate 7 of an anti-tumor drug ceritinib. The intermediate 7 has a structural general formula as the following image. In the formula, Ar is phenyl or phenyl substituted by C1-C4 alkyl, C1-C4 alkoxyl, cyano, nitro or halogen; and X is Cl or Br. A preparation method of the intermediate 7 comprises the following step: the intermediate 7 is produced through a reaction of a compound 1 and substituted or unsubstituted benzyl halide (or ArCH2X). The invention also provides a novel route for applying an intermediate 7b in synthesizing ceritinib. With the route, a problem of using expensive platinum oxide as a reduction catalyst in an existing route 1 can be avoided. In the synthesis route 2 for synthesizing ceritinib with the compound 7b, the obtained synthesis intermediate 7b is quaternary ammonium salt. The salt can be precipitated from a solvent, and can be obtained by filtration, such that impurities can be retained in filtrate. Also, the conditions for all steps of reactions in the synthesis route 2 are mild, and post-treatment is simple. All the obtained intermediates 8b-10b do not need column chromatography purification. Therefore, the route is suitable for industrialized production.

The present invention discloses a non-uniformly distributed combustion catalyst and the preparation method thereof. The present invention belongs to the catalyst field, and in particular relates to the catalytic combustion catalyst product and the production method. The technical problem solved by the present invention is to provide the catalyst product with non-uniformly distributed active components and the preparation method. Another objective of the present invention is to apply the catalyst with non-uniformly distributed active components to the catalytic combustion reaction of methanol, methane and natural gas. The active components of the catalyst consist of one species or a plurality of species in palladium oxide, rhodium oxide, platinum oxide, cobalt oxide, nickel oxide and chromium oxide, and the active components are non-uniformly distributed in the catalyst in an eggshell-shape, of which the content occupies the 0.01-5 percent of the catalyst weight; the weight of an alumina carries occupies 95-99.99 percent. The present invention can decrease the combustion point of fuel, and can make the active component of precious metals utilized with high efficiency.

The invention discloses a catalyst based on a platinum oxide alloy loaded boron and nitrogen doped diamond as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps of dissolving a platinum metal salt and a non-noble metal salt in distilled water, then adding a boron and nitrogen doped diamond, and ultrasonically dispersing to obtain dispersion liquid; and adding the obtained dispersion liquid into a hydrothermal kettle to carry out a hydrothermal reaction, cooling to a room temperature, then standing, depositing, washing a deposit with water and ethanol, and vacuum-drying to obtain a product. According to the catalyst prepared by the preparation method, the use level of platinum is low; further, a non-noble metal is alsoused as a catalytic active component; the synergistic catalytic action is formed by the combination of a platinum oxide alloy and the boron doped diamond; the electronic structures of the platinum oxide alloy and the boron doped diamond are effectively regulated and optimized; thus, the production of ozone is more facilitated; the catalyst has high electrocatalytic activity and ultrahigh stability; the ozone generating current efficiency of an anode of an electrolytic ozone generator is obviously improved; and through being proven, the catalyst provided by the invention has the performance, inthe electrolysis of water to catalytically produce ozone, superior to that of lead dioxide, and has a wide application prospect.

The invention provides a method for preparing donepezil hydrochloride, which comprises the steps as follows: (1) 5,6-dimethoxy-2-(4-pyridyl)methylene-1-idenone (II) is taken as a starting material, and is processed through catalytic hydrogenation under the action of platinum dioxides, so as to generate compounds that are 5,6-dimethoxy-2-(4-piperidyl)methylene-2,3-dihydro-1-idenone (III); (2) the obtained compounds (III) and benzaldehyde are processed through condensation, so as to generate 1-benzyl-4-[(5,6-dimethoxy-1-idenone)-2-methylene]piperidine (IV); and (3) the obtained compounds (IV) and hydrogen chloride are processed through salifying, so as to generate 1-benzyl-4-[(5,6-dimethoxy-1-idenone)-2-methylene]piperidine hydrochloride that is donepezil hydrochloride (I). In the method for preparing donepezil hydrochloride, 5,6-dimethoxy-2-(4-pyridyl)methylene-1-idenone is taken as the starting material, and three-step reaction comprising catalytic hydrogenation, condensation and salifying are adopted to prepare donepezil hydrochloride. The method is simple and efficient to operate, has the advantages of mild reaction conditions, high safety and higher yield coefficient, is easy to control, and is suitable for industrialized production.

The invention discloses a catalyst for the catalytic oxidation of gaseous hydrogen tritide. The catalyst is obtained mainly by supporting platinum oxide by adopting the oxide of transition metal as a carrier, wherein the transition metal is Al, Ti, Mn, Co, Fe, Cu and Ni. Air serving as the catalyst is carried into a reactor to convert elementary tritium in the hydrogen tritide into water. The catalyst is subjected to hydrophobic modification, and is high in activity, long in service life and particularly applied to the catalytic oxidation recovery of tritium in the hydrogen tritide.

Provided is a method of producing a fuel cell catalyst layer which has a large specific surface area and high activity and which includes the steps of: forming a dendritic structural member including a catalyst precursor by a vapor phase method; providing a coating layer on a surface of the dendritic structural member; and subjecting the dendritic structural member having the coating layer provided thereon to a reduction treatment. The dendritic structural member including a catalyst precursor is a dendritic structural member including platinum oxide or a dendritic structural member containing a composite oxide of platinum oxide and an element except platinum.