本文介绍了美、日、西欧等国现行汽车废气中有害组分 CO、HC 和 NCx 排放限量的立法规定;双床和三元型催化转化器;氧化型和三元型催化剂的研究水平,及催化剂失活原因,尤其是铅和磷对于三元型催化剂的中毒。最后讨论了几个影响汽车废气净化催化剂发展的因素和需求量的预测。 This article describes the legislative provisions on the emission limits of the harmful components CO, HC and NCx from the existing automotive exhaust gases in the United States, Japan and Western Europe. The twin-bed and ternary-type catalytic converters, the research on oxidized and ternary catalysts, and The reason for catalyst deactivation, especially the poisoning of ternary catalysts by lead and phosphorus. Finally, several factors influencing the development of automobile exhaust gas purification catalysts and the demand forecast are discussed.