173 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.

A visible-light-activated photocatalyst powder and method for producing and modifying the same are provided. The visible-light-activated photocatalyst powder is produced by improving the process conditions or by modifying with platinum oxide. Further, the UV light-activated titanium dioxide is modified to be more visible light activated by loading platinum oxide on the surface of titanium dioxide. The methods enhance the conversion of sunlight irradiation to chemical energy. The air-born pollutants can be degraded by the treatment with the photocatalyst under UV or visible light irradiation.

The invention relates to an organic synthesis method, in particular to a method for synthesizing an Arbekacin and an intermediate dibekacin thereof. The method comprises the following steps of: takinga kanamycin B as initial raw material, carrying out the following processes of aldol condensation, sulfonylation, sodium iodide replacement and elimination to form double bond, de-protection under acidic condition, amino-electron reduction and final hydrogenation, thus obtaining the dibekacin; taking 3',4'-dideoxy -3',4'-didehydro-kanamycin B as raw material, using a di-tert-butyl dicarbonate toselectively protect the amidogen of 3, 2', 6', 3'' sites; subsequently using the synthesized active ester to protect the 1-site amidogen; subsequently using tri-fluoroacetic acid to remove BOC; and carrying out hydrazinolysis and catalysis and hydrogenation of platinum oxide, thus obtaining the Arbekacin. The synthesis method has the advantages of simple operation, high outcome yield, reducing thecost of raw material, optimizing the reaction route, lowering the requirements to the reaction conditions and being beneficial to industrial production.

An integrated circuit copper interconnect structure is formed by forming a dielectric layer (90) over a semiconductor substrate (10). Trenches (110) and vias (120) are formed in the dielectric layer (90) and a barrier layer (130) is formed in the trenches (110) and vias (120) using material such as iridium, iridium oxide, ruthenium, ruthenium oxide, rhodium, rhodium oxide, rhenium, rhenium oxide, platinum, platinum oxide, palladium and palladium oxide. Copper (147) is then used to fill the remaining area in the trenches (110) and vias (120).

A catalyst composition is disclosed for the reduction of soot and undesirable gaseous emissions from engine exhaust, particularly exhaust from diesel engines. The catalyst contains an alkali metal catalytic metal oxide, preferably lithium platinum oxide, in which the catalytic metal is atomically isolated. For improved performance in a diesel particulate filter, the alkali catalytic metal oxide is uniformly dispersed on an alkali metal aluminate such as lithium aluminate. Also disclosed is the catalytic device comprising this catalyst.

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 present invention provides solid oxide cells such as fuel cells, electrolyzers, and sensors comprising an electrolyte having an interface between an yttria-stabilized zirconia material and a glass material, in some embodiments. Other embodiments add an interface between a platinum oxide material and the yttria-stabilized zirconia material in the electrolyte. Further embodiments of solid oxide cells have an ion-conducting species such as an ionic liquid or inorganic salt in contact with at least one electrode of the cell. Certain embodiments provide room temperature operation of solid oxide cells.

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).

An optical hydrogen gas detecting membrane is prepared by sequentially depositing a platinum oxide layer and a catalytic metal layer on a transparent substrate, such as quartz glass, by vapor deposition such as the sputtering method. Palladium or platinum is used as the catalytic metal layer.

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 present invention discloses a non-uniformly distributed combustion catalyst and the application thereof. The present invention belongs to the catalyst field, and in particular relates to the catalytic combustion catalyst product. 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 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 discloses an in-situ self-assembled tetravalent platinum drug, a preparation method and application thereof. Cis-platinum is subjected to chemical reaction to generate cis-platinum oxide, and the cis-platinum oxide is further subjected to reaction with lysine residue to covalently modify tyrosine phosphorylated self-assembled short peptide to construct the tetravalent platinum drug.The tetravalent platinum drug can be self-assembled in situ to form supramolecular hydrogel with a nanofiber microstructure under the action of high-expression phosphatase on the surface of a tumor cell. Under the action of glutathione highly expressed in tumor cells, the platinum-containing nanofibers taken by the cells release a bivalent platinum drug to play a role in treatment. The formation of the hydrogel promotes the uptake of platinum drugs by tumor cells and increases the residence time of the platinum drugs in the tumor cells. Compared with traditional cis-platinum, the killing effect of the tetravalent platinum drug on tumor cells is not influenced by cell drug resistance, and the systematic toxicity is obviously reduced.

The invention discloses a municipal activated sludge treatment catalyst body, a sludge treatment system and a sludge treatment method, belonging to the technical field of municipal engineering sludgetreatment. The catalyst body takes a stainless steel material as a carrier; the surface of the stainless steel material is loaded with a noble metal oxide layer; noble metal oxides are solidified on the surface of the stainless steel material by sintering or sputtering; the structure of the stainless steel material is a circular, rectangular or polygonal tube body, and a plurality of through holesare formed in the wall the tube body; the noble metal oxides are any one or more of a platinum oxide, a rhodium oxide, a palladium oxide and an iridium oxide. The plurality of through holes are formed in the side wall of the catalyst body, so that a larger specific surface area can be obtained, the contact area between sludge and the catalyst body is enlarged, and the reaction time is further shortened; furthermore, the self weight of the catalyst body is further reduced, so that the speed, at which the catalyst body moves up and down as rolling over along with a mixture in a reactor, is accelerated, and the sludge treatment efficiency is increased.

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.

The present invention discloses a Fischer-Tropsch synthesis method and a Fischer-Tropsch synthesis catalyst. Hydrogen and carbon monoxide are employed as raw materials in the Fischer-Tropsch synthesis method, and at the presence of a cobalt-baed Fischer-Tropsch synthesis catalyst, hydrocarbon products with a carbon number less than 20 are produced with high selectivity under Fischer-Tropsch synthesis conditions; wherein porous titanium-silicon-platinum oxide composite particles are used as carriers in the cobalt-baed Fischer-Tropsch synthesis catalyst; the Co which are supported by using a impregnation method is uses as active components; and the content of the Co is 15% to 40% by weight of the finished catalyst. Compared with the prior art, a very high CO conversion rate can be maintained, while a realtively low carbon dioxide and methane selectivity can be obtained; and at the same time hydrocarbon products with a carbon number less than 20 are produced with high selectivity, by using the catalyst prepared by the method of the present invention.

The invention provides a hydrogenation catalyst, a preparation method and application thereof, and a hydrogenation reaction method. The preparation method of the hydrogenation catalyst comprises the steps of: (1) contacting a catalyst carrier with a solution containing an amino-carrying surfactant, and performing drying to obtain a catalyst carrier fixedly loaded with a surfactant; and (2) steeping the catalyst carrier fixedly loaded with the surfactant in a chloroplatinic acid containing steeping solution, a water-soluble copper salt containing steeping solution and an assistant compound containing steeping solution in order, conducting drying, then performing roasting to decompose the surfactant and convert the chloroplatinic acid, the water-soluble copper salt and the assistant compound into platinum oxide, copper oxide and an assistant respectively. The hydrogenation catalyst obtained by the method can achieve high raw material conversion rate and alcohol selectivity when it is used for hydrogenation reaction of a carboxylic acid containing ester compound, and is particularly suitable for co-production of cyclohexanol and ethanol from acetic acid containing cyclohexyl acetate as the reaction raw material.