Toyo Engineering Corporation

Fujimi Kenmazai Kogyo Co., Ltd.

Ken-ichiro Uwano

Tadayoshi Tomita

Yoshinobu Yamaguchi

Nobuhiro Sato

Mikio Noda

Koji Otsuka

A catalyst comprising 10 to 30 wt.% of nickel as nickel oxide, 20 to 60 wt.% of calcium as calcium oxide, 10 to 70 wt.% of aluminum as aluminum oxide and containing less than 1 wt.% of silicon dioxide. The catalyst is prepared by using: as the starting material for the nickel component, fine particles of nickel oxide obtained by heating a nickel compound which is decomposed to nickel oxide by heating at a temperature in the range of 400.degree. to 800.degree. C in the presence of oxygen; as the starting material for the calcium component, calcium oxide per se or a calcium compound which is decomposed to calcium oxide by heating and; as the starting material for the aluminum component, alumina cement of a high purity. The catalyst is prepared by mixing and kneading the starting materials with water, molding the same, then keeping the catalyst composition under a highly humid atmosphere at a temperature in the range of 5.degree. to 35.degree. C for longer than one day for hydrating and hardening the cement and thereafter sintering the same at a temperature in the range of 550.degree. to 1200.degree. C.

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Kariya, Japan

Ken-ichiro Uwano