| 摘要 |
PURPOSE:To obtain a catalyst which can be used in a high temp. condition, by supporting a base metal oxide or the like by a support obtained by coating titania or zirconia on a heat-resistant porous surface of alumina or the like. CONSTITUTION:As a catalyst for oxidizing a combustible gas such as carbon monoxide or hydrogen in an exhaust gas from an internal combustion engine, a platinum group element or an oxide of a base metal such as copper or chromium is supported on a support obtained by coating titania or zirconia on a heat-resistant porous surface of alumina, cordierite or the like. The obtained catalyst can show high performance and high catalytic activity in a high temp. range of combustion of a combustible gas such as carbon monoxide. |
