The preparation and field-test of the 778-type granular rare-earth catalyst for the treatment of autoexhaust gases have been studied.
本文叙述了778型颗粒状汽车尾气净化稀土催化剂的研究和应用。
2
This paper introduces the three-way emission control technology and the principle of autoexhaust catalytic converter. The main composition of the three-way-catalyst is also reviewed.