| 摘要 |
PURPOSE:To provide a catalyst removing nitrogen oxide, carbon monoxide and hydrocarbon from oxygen excessive exhaust gas containing nitrogen oxide, carbon monoxide and hydrocarbon with high purifying efficiency. CONSTITUTION:A catalyst is obtained by adding cobalt and silver to zeolite and has purifying function removing nitrogen oxide, carbon monoxide and hydrocarbon from oxygen excessive exhaust gas containing nitrogen oxide, carbon monoxide and hydrocarbon. |
