低贵金属含量三效催化剂的研制

Study on Three-Way Catalyst Containing Less Precious Metal

介绍了贵金属含量为0.64-0.78 g·L-1三效催化剂的净化性能,包括实验室评价的空燃比特性曲线和起燃温度特性曲线以及实际装车工况法排放测试,结果表明,即使贵金属含量达到0.71 g·L-1以下,仍能够使吉利豪情、秦川福来尔轿车的污染物排放达到GB18352—2001标准的第二阶段排放要求。对不同贵金属成分的催化剂的净化性能进行了比较和分析。

The performances of three-way catalysts with the precious metal of 0.64-0.78 g · L -1 were introduced, which included the characteristics of A/F ratio and light-off temperature evaluated in the stuy. The results show that the low precious metal content catalysts has good performances which can meet the second stage requirements of the regulation of GB18352-2001 in two cars. The activities of catalysts with different content of precious metal were analyzed as well.