Toa Nenryo Kogyo Kabushiki Kaisha

Eiichiro Nishikawa

Katsumi Kaneko

Masuo Shinya

Hiroshi Furukawa

Setsuo Kamiyama

Kouji Shiozawa

Takeo Koyama

Kayako Ueda

Teiji Nakamura

A catalyst for the hydrogenation of a diolefin, having palladium or a compound thereof and at least one co-catalyst component selected from the group consisting of ruthenium, rhodium, cobalt, and rhenium supported each in the form of an elemental metal or a metal compound on a support, its method of preparation and its use for said hydrogenation, particularly for the hydrogenation of cyclopentadiene to cyclopentene is described herein.

Catalyst, its method of preparation and process for its use in the

The invention relates to a process of producing a carbonyl compound by dehydrogenating a linear aliphatic alcohol of 1 to 6 carbon atoms in the gas phase in the presence of a solid catalyst comprising a ruthenium catalyst supported on a carrier such as zinc oxide or magnesium oxide.

Process for producing carbonyl compounds

A method of preparing a catalyst for the diacyloxylation of conjugated dienes such as butadiene by reaction with a carboxylic acid such as acetic acid and oxygen, which comprises separately and successively impregnating a carrier, for example carbon, with a solution of a Group VIII noble metal in a mixture of a mineral acid and an organic solvent, then with a solution of a Group IVA, VA or VIA element or compound thereof in an organic solvent.

Method of preparing a catalyst for synthesizing unsaturated esters

This invention consists essentially in a method of removing oxygen from a gas containing an unsaturated hydrocarbon, which comprises contacting a gas containing an unsaturated hydrocarbon and oxygen with silver and/or gold, or a catalyst containing at least one of them, in the presence of hydrogen.

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Saitama, Japan

Eiichiro Nishikawa