| 摘要 |
PROBLEM TO BE SOLVED: To demonstrate high NOX purification performance in a wide temperature range from low to high temperatures. SOLUTION: An additive of alcohol such as methanol is used as a reducing agent, a catalyst A using alumina containing silver is arranged on the upstream side and a catalyst B using ZSM-5 which is a kind of zeolite containing a kind of metal selected from indium and gallium is arranged on the downstream side of an exhaust gas passage. |
