| 摘要 |
PURPOSE:To contrive to enhance activity to methane and heat resistance, by combining catalysts prepared by supporting Pd, Pt or LaCoO3 by a carrier such as alumina applied to the surface of a heat resistant base material. CONSTITUTION:An oxidizing catalyst consists of a catalyst A prepared by supporting Pd by a carrier (alumina or zirconia) applied to the surface of a heat resistant base material (cordierite or mullite), a catalyst B and catalyst C. The aforementioned catalyst B formed by supporting Pd by the aforementioned similar carrier and the aforementioned catalyst C is formed by supporting LaCoO3 in the aforementioned similar method. This oxidizing catalyst has such a structure that the catalyst A is arranged to a front stage, the catalyst B to a middle stage and the catalyst C to a rear stage and the whole thereof is divided into plural parts. Methane is oxidized at a low temp. with good efficiency by thus obtained catalyst. |
