【摘要】 对一种富稀土型三效催化剂的性能进行了考察。结果表明：该催化剂具有较好的三效活性和较好的启燃温度特性，具有较宽的空速适应范围，在空速为 ８４０００ｈ－１时，ＣＯ、ＮＯｘ的转化率仍在 ９０％以上、ＨＣ转化率仍在 ７０％以上；该催化剂具有较好的耐老化性能，经实验室快速老化实验，即相当于实车行驶８万ｋｍＣＯ劣化系数１．０９、ＨＣ劣化系数１．０５、ＮＯｘ劣化系数 １．０６；该催化剂经桑塔纳轿车整车 ２８况测试，其净化效果与该车配置的美国 Ｅｎｇｅｌｈｅｒｄ公司的催化剂相当。更多还原

【Abstract】 The performance of a kind of rare-earth metal three-way catalyst was investigated. The results showed this kind of catalyst has good three-way catalytic performance,and low light-off temperature,and aging stability,and it could be applied in a wide range of space velicity. As the SV = 84000h ; ,the conversion of CO,HC was above 90% .that of NOX was above 70%. The aging test result (equal to 80000km car ran)showed the inferior coefficient of CO,HC,NOx was respectively 1. 09,1. 05,1. 06. Its properties of the three-way catalyst applied to Santana car is equivalent to that of the three-way catalyst made by Engelherd company.更多还原