| 摘要 |
PURPOSE:To provide a catalyst used for simultaneous removal of NOx, CO and hydrocarbon from exhaust gas contg. excess oxygen as well as NOx, CO and hydrocarbon discharged from the internal-combustion engine of an automobile, etc., and having enhanced selectivity of reduction of NOx to nitrogen. CONSTITUTION:This exhaust gas purification catalyst used for removal of NOx, CO and hydrocarbon from exhaust gas contg. excess oxygen as well as NOx, CO and hydrocarbon is made of ZSM-5 zeolite having >=15 molar ratio of SiO2 to Al2O3 and contg. Fe and Pt incorporated by ion exchange. |
