摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst for direct decomposition of lower hydrocarbon which is friendly to environment and is economical. <P>SOLUTION: The catalyst for direct decomposition of lower hydrocarbon is prepared by depositing iron on a surface of a carrier consisting essentially of silica (SiO<SB>2</SB>) via covering of non-ferrous metal oxide. For example, after the carrier consisting essentially of silica is impregnated with a non-ferrous metal salt solution and then is dried and calcined, the carrier is impregnated with the mixed solution of the non-ferrous metal salt and an iron salt and then is dried and calcined. Preferably the non-ferrous metal oxide is alumina (Al<SB>2</SB>O<SB>3</SB>). More preferably foamed glass is used as the carrier consisting essentially of silica. The foamed glass can be obtained as a bulk phase porous body, for example, by adding a foaming agent to pulverized matter of waste glass and performing melting and foaming. The foamed glass having higher ratio of continuous air pores compared to closed cells is desirable. <P>COPYRIGHT: (C)2006,JPO&NCIPI |