| abstract |
A method for producing cycloolefins, useful as an intermediate for lysine, caprolactam, adipic acid etc., by the partial hydrogenation of corresponding aromatic hydrocarbons with a hydrogen gas in the presence of water and a catalyst comprising barium sulfate as a carrier and ruthenium and one or more metals selected from the group consisting of iron, cobalt, silver and copper supported on the carrier, characterized by incorporating one or more metal oxides selected from the group consisting of silicon dioxide, titanium dioxide and aluminum oxide in the reaction system. |