HYDROCARBON CATALYTICALLY DECOMPOSING CATALYST AND PRODUCTION OF HYDROGEN AND CARBON USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a catalyst capable of producing hydrogen and a carbon material without discharging carbon dioxide to the utmost and a method for producing hydrogen and the carbon material using the catalyst in a catalytic decomposition reaction of hydrocarbon. SOLUTION: The hydrocarbon catalytically decomposing catalyst is constituted of nickel and at least one kind of alumina and silica and the grade of nickel is >=75 wt.% and <100 wt.% expressed in terms of pure metal. The method of producing hydrogen and carbon is by allowing a gaseous mixture prepared by adding steam in the hydrocarbon kept at >=450 deg.C and <=600 deg.C in <=30 wt.% steam mixing ratio per total gas expressed in terms of weight to contact with the catalyst. The hydrocarbon in the gaseous mixture is at least one kind selected from a group composed of an aliphatic hydrocarbon such as methane, an alicyclic hydrocarbon such as cyclohexane and an aromatic hydrocarbon such as benzene.