Toyo Engineering Corporation

Fujimi Kenmazai Kogyo Co., Ltd.

Nobuhiro Sato

Kozo Ohsaki

Katsutoshi Kikuchi

Toru Numaguchi

Yoshinobu Yamaguchi

Yoshitsugu Hirota

Noboru Mochiduki

Hitoshi Kodama

Tadayoshi Tomita

Mikio Noda

Koji Otsuka

Ken-ichiro Uwano

Isamu Koshdyama

Nanahiko Kitano

Shigeharu Tsutsumi

A catalyst for steam reforming of a hydrocarbon carrying from three to twenty weight percent of nickel as nickel oxide, which is made by immersing alumina particles in a nickel containing solution, drying and then calcining the particles, which alumina particles are of a .alpha.-alumina and of 98 weight percent or more purity and has a pore volume of the pores having a diameter of from 0.1 to 0.5 microns of 0.2 ml/g or more and pore volume of the pores having a diameter of more than 0.5 microns but not more than 10 microns of 0.05 ml/g or more.

Catalyst for steam reforming

A catalyst for steam reforming of a hydrocarbon or alcohol carrying from three to twenty weight percent of nickel as nickel oxide, which is made by immersing alumina particles in a nickel containing solution, drying and then calcining the particles, which alumina particles are of .alpha.-alumina and of 98 weight percent or more purity and has a pore volume of the pores having a diameter of from 0.1 to 0.5 micron of 0.2 ml/g or more and a pore volume of the pores having a diameter of 0.5 microns or more of 0.05 ml/g or more.

A catalyst for steam reforming of hydrocarbons comprises porous aluminum oxide and nickel oxide, characterized in that the porous aluminum oxide in which the pore volume given by the pores of the pore diameter ranging from 60 to 120 A is not less than 0.35 ml./g. and the pore volume given by the pores of the pore diameter of more than 120 A is not less than 0.1 ml./g. and the purity determined upon ignition dryness is not less than 98% by weight is impregnated with nickel in an amount ranging from 10 to 30% by weight, as converted to nickel oxide basis, based on the total amount by weight of the catalyst.

Catalyst for steam reforming of hydrocarbons

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.

Catalyst and its method of preparation

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Nagoya, Japan

Nobuhiro Sato