Ce_xZr_(1-x)O_2固溶体三效催化剂研究进展

Advances in Three-Way Catalysts Containing Ce_xZr_(1-x)O_2 Solid Solution

重点介绍了具有良好储氧能力的铈氧化物及其复合氧化物固溶体作为助剂在汽车尾气净化三效催化剂中的作用原理,阐述了制备方法对催化剂结构与性能的影响,综述了CeO2、CexZr1-xO2(CZ)和REyCexZr1-x-yO2(RECZ,RE=Rare Earths)等相关氧化物的研究进展,提出了该领域今后的研究重点和发展趋势。

This paper mainly introduces the operating principles of cerium oxide and cerium mixed oxide solid solution as oxygen storage materials in three-way catalysts of automobiles, and also demonstrates the effects of preparation methods on the structures and properties of the catalysts. Meanwhile, it summarizes the recent progress in CeO2 , Cex Zr1-x O2 （CZ） and REy Cex Zr1-x-y O2 （RECZ, RE = rare earths） . Furthermore, this article proposes the research emphasis and the developing tendency in the future.