富氧条件下选择性还原NO的复合催化剂体系

Combined catalyst system for selective catalytic reduction NO in the presence of oxygen

选择性催化还原法是净化稀燃汽车尾气中NOx 的最有效途径之一 ,单一催化组分或单一类型的催化剂很难满足实际需要 ,复合催化剂的研究成为必然趋势。本文介绍了复合催化体系的组合形式 ,回顾了国内外最近几年复合催化剂体系净化NOx 的研究成果 。

The selective catalytic reduction (SCR) of nitrogen oxides is one of the most efficient ways to remove NO x from lean burn automobile exhaust, but single active component catalysts or one type of catalysts does not satisfy practical demand, more active components catalysts and structural organization of more than two kinds of catalysts would be necessary for the practical application to the lean burn condition. In this paper, the types of combined catalyst system and the development of selective catalytic reduction NO x with combined catalyst system in recent years are described, some suggestions for designing new combined catalyst system in the future are proposed.