汽车尾气催化净化技术发展动向

汽车尾气是大气污染的主要来源之一.世界上发达国家的汽车尾气排放法规日趋严格,未来汽车必须达到低排放、超低排放,甚至零排放的要求.汽车尾气催化净化技术被证明是最有效的控制汽车排放污染的方法之一.新发展的尾气催化净化技术,如密偶催化剂、HC吸附催化剂以及稀薄燃烧条件下的NOx吸附还原催化剂等的应用,可满足国外未来更严格的排放法规的要求.同时概述了我国目前汽车尾气净化器行业的发展概况,指出了我国汽车尾气净化器在产业化方面的不足以及努力方向.

Developments and trends in automobile exhaust catalysts

Automobile exhaust is one of the main sources of the air pollution. All over the world the regulations of vehicle emission in the developed countries are getting strict increasingly. In the future, the vehicle should meet low emission, ultra low emission and even zero emission regulation. Catalytic removal technology has been proved to be one of the most effective ways to eliminate the automobile emission. The latest application and advances in the exhausts catalyst, such as closed-coupled catalyst, HC adsorbed catalyst, NO_x storage reduction catalyst under lean-burn condition can meet abroad future stricter emission regulation law. Current developments and deficiencies on the industrialization of the native catalytic converter trade were summarized and the directions of development were proposed.