CATALYST FOR STEAM MODIFICATION

摘要

PURPOSE:To obtain a catalyst for steam modification whose activity is not lowered even under a condition exposed to high temp. by immersing an alpha-alumina porous body having specific properties in a nickel-containing aqueous solution and subsequently drying the impregnated porous body naturally before baking the same. CONSTITUTION:As a carrier of a catalyst for performing the steam modification of hydrocarbon to prepare a hydrogen/carbon monoxide-containing gaseous mixture, an aluminum oxide porous body wherein a pore volume of a pore size of 0.1-0.5mum is 0.2ml/g or more, a pore volume of a pore size of 0.5mum or more is 0.05ml/g or more and purity after ignition drying is 98wt.% or more is used. This porous body is impregnated with a nickel-containing solution to be dried and baked. Nickel is contained in an amount of 3-30% by wt. or the whole of the catalyst as nickel oxide. The catalyst thus obtained is stable to heat and not lowered in its activity even under a condition exposed to high temp. of a certain degree or more.