Nippon Mitsubishi Oil Corporation

Nippon Oil Corporation

Takaya Matsumoto

Iwao Anzai

Roy Anthony Periana

Douglas Taube

Hajime Yoshida

Yasuyuki Iwasa

Shinji Nishikawa

Disclosed in a catalyst which enables to reduce the carbon monoxide concentration in a product gas to 5 ppm by volume or less when carbon monoxide in a raw material gas containing hydrogen and carbon monoxide is selectively oxidized. The catalyst comprises a support of an inorganic oxide and ruthenium loaded thereon, and the relative loading depth X(Ru) of ruthenium in the radial direction in a redial cross-section of the catalyst satisfies the requirement defined by the following formula (1)X(Ru)&#x2267;15&#x2003;&#x2003;(1).

Catalyst for reducing carbon monoxide concentration

A process for producing a fuel gas for a fuel cell is provided. The process includes a step of converting hydrocarbons and/or oxygen-containing hydrocarbons to a reformed gas which is composed principally of hydrogen by an autothermal reforming reaction using an autothermal reforming catalyst. The catalyst includes rhodium supported on a support containing 5 to 40 percent by mass of a cerium oxide or rare earth element oxide which is composed principally of a cerium oxide, 60 to 95 percent by mass of an aluminum oxide, and 0 to 10 percent by mass in terms of metal of one or more elements selected from the group consisting of an alkaline metal and an alkaline earth metal, the atomic ratio of cerium and rhodium (Ce/Rh) being 1 to 250.

Process of producing fuel gas for fuel cell

A process for producing a fuel gas for a fuel cell is provided. The process includes a step of converting hydrocarbons and/or oxygen-containing hydrocarbons to a reformed gas which is composed principally of hydrogen by an autothermal reforming reaction using an autothermal reforming catalyst. The catalyst includes ruthenium supported on a support containing 5 to 40 percent by mass of a cerium oxide or rare earth element oxide which is composed principally of a cerium oxide, 60 to 95 percent by mass of an aluminum oxide, and 0 to 10 percent by mass in terms of metal of one or more elements selected from the group consisting of an alkaline metal and an alkaline earth metal, the atomic ratio of cerium and rhodium (Ce/Rh) being 1 to 250.

A method of preparing an alkyl-substituted aromatic hydrocarbon, which comprises alkylating an aromatic hydrocarbon with an olefin in the presence of a catalyst comprising an iridium compound having at least one iridium atom and at least one &bgr;-diketonato ligand to produce the alkyl-substituted aromatic hydrocarbon.

Method of alkylating aromatic hydrocarbon

A method of preparing an alkenyl-substituted aromatic hydrocarbon, which comprises alkenylating an aromatic hydrocarbon with an olefin using &bgr;-diketone together with a rhodium complex catalyst in the presence of oxygen.

Method of preparing alkenyl-substituted aromatic hydrocarbon

This invention relates generally to the field of chemical synthesis, and more specifically, to the field of oxidative coupling of olefinic compounds and aromatic compounds, to produce olefinically substituted aromatic compounds. More particularly, this invention relates to methods for oxidative coupling of olefinic compounds and aromatic compounds which employ a rhodium(III) acetylacetonate catalyst and a copper(II) redox agent in a reaction medium which does not comprise a carboxylic acid component. In one embodiment, this invention pertains to methods for the preparation of styrene by the oxidative coupling of ethylene (an olefinic compound) and benzene (an aromatic compound), in the presence of Rh(acac).sub.2 Cl(H.sub.2 O), as catalyst, and Cu(II)(CH.sub.3 COO).sub.2, as copper(II) redox agent, in which benzene is both a reactant and the reaction medium.

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Yokohama, Japan

Takaya Matsumoto