摘要:
A material having ultrafine gold particles immobilized thereon consists essentially of at least one support selected from the group consisting of metal oxides, metal sulfides, and carbonaceous substances and ultrafine gold particles having a maximum particle diameter of 250 angstroms and deposited on the support with strong interaction. The material exhibits high activity as a catalyst for the oxidation of carbon monoxide to carbon dioxide. It is produced by causing a vaporized organic gold complex to contact at least one support selected from the group consisting of metal oxides, metal sulfides, and carbonaceous substances in an atmosphere of reduced pressure thereby inducing adsorption of the vapor of organic gold complex on the support and then heating the product of the adsorption to a temperature in the range of 100.degree.-700.degree. C.
摘要:
A catalyst for the hydrogenation of CO and CO.sub.2 consists essentially of a metal oxide and gold. Synthesis of methanol and hydrocarbons by hydrogenation of CO and CO.sub.2 comprises establishing contact between a gaseous mass consisting of CO, CO.sub.2, and hydrogen and a catalyst consisting essentially of a metal oxide and gold.
摘要:
Apparatus 1 for evaluating catalyst performance according to the invention comprises a reaction vessel 2 in which a plurality of catalysts S are disposed at a distance, supply pipes 3 for supplying a reactant gas into the reaction vessel 2, a plurality of measuring instruments 7 provided with gas sensors 71 for sensing the gas formed by the contact of the reactant gas with a plurality of catalysts S, and outputting signals according to the kinds and concentrations of the formed gas, and a calculating unit 8 for receiving the output signals from the plurality of measuring instruments 7 and identifying the kinds of the formed gas and calculating the concentrations thereof. With such a constitution, performance evaluation on a plurality of catalysts can be made concurrently, quick and in simple steps.
摘要:
A catalyst for producing acrolein by oxidizing ethane contains silicon, iron, an alkali metal, and oxygen. A method for producing acrolein includes the step of oxidizing ethane in the presence of the catalyst and a method for producing the catalyst includes the steps of mixing porous silicon oxide with an iron compound and an alkali metal compound and calcining the resultant mixture.
摘要:
There are disclosed a nitrogen oxide removal catalyst comprising palladium fixed on at least one metal oxide selected from the group consisting of titanium oxide, aluminum oxide, zinc oxide, and magnesium oxide, and a method for removing nitrogen oxides, comprising bringing a nitrogen oxide-containing gas into contact with the above-mentioned catalyst in the presence of hydrogen.
摘要:
An imaging apparatus includes an image analysis unit obtaining brightness information for respective hue regions from an image signal of a picked-up image and an exposure control unit carrying out exposure control based on the brightness information obtained in the image analysis unit.
摘要:
An inner electrode for barrier film formation is an inner electrode for barrier film formation that is inserted inside a plastic container having an opening, supplies a medium gas to the inside of the plastic container, and supplies high frequency power to an outer electrode arranged outside the plastic container, thereby generating discharge plasma on the inner surface of the plastic container to form a barrier film on the inner surface of the plastic container, and that is provided with a gas supply pipe having a gas flow path to supply a medium gas and an insulating member screwed into an end portion of the gas supply pipe to be flush therewith and having a gas outlet communicated with the gas flow path.
摘要:
An imaging apparatus includes an image analysis unit obtaining brightness information for respective hue regions from an image signal of a picked-up image and an exposure control unit carrying out exposure control based on the brightness information obtained in the image analysis unit.
摘要:
Disclosed is a nonaqueous electrolyte secondary battery wherein the energy density is improved by increasing the range of depth of discharge to be used. Specifically disclosed is a lithium ion secondary battery 20 wherein an electrode group 6 is contained within a battery case 7. The electrode group 6 is formed by winding a positive electrode plate W1 and a negative electrode plate W3 with a separator W5 interposed therebetween. The positive electrode plate W1 has positive-electrode mixture layers W2 which are formed on both surfaces of an aluminum foil and contain a positive-electrode active material. The positive-electrode active material contains lithium iron phosphate as a principal component. The negative electrode plate W3 has negative-electrode mixture layers W4 which are formed on both surfaces of a rolled copper foil and contain a negative-electrode active material. The negative-electrode active material contains a mixture of a graphite material as a principal component and an amorphous carbon material as a secondary component. The positive electrode plate W1 has a positive-electrode initial charge/discharge efficiency of e1, the negative electrode plate W3 has a negative-electrode initial charge/discharge efficiency of e2, and e1 and e2 satisfy the relation of formula e2=e1−x (10≦x≦20). This avoids usage of the high resistance region of the positive electrode plate W1.