汽车尾气净化催化剂用Ce_xZr_(1-x)O_2固溶体的研究进展  

Study Andvance in Ce_xZr_(1-x)O_2 Solid Solution for Autocatalyst

作　　者：赵建军[1] 刘源[1] 

机构地区：[1]内蒙古工业大学化工学院,内蒙古呼和浩特010062

出　　处：《稀土》2002年第3期52-57,共6页Chinese Rare Earths

基　　金：国家自然科学基金 ( 2 986 90 0 1);内蒙科委和内蒙教委联合资助项目

摘　　要：综述了 Ce O2 和 Ce XZr1 - XO2 固溶体在汽车尾气净化催化剂中的作用、铈锆氧化物的体相结构及影响铈锆氧化物固溶体储氧能力 (OSC)和织构热稳定性的因素 ,并对其在催化剂中的应用作了简要阐述。This paper gives the use of CeO 2 and Ce xZr 1-x O 2 in TWCs and the influencing factors of OSC and stabilization correlated with textural and structural properties of CeO 2 and Ce xZr 1-x O 2.In addition, performance of Ce xZr 1-x O 2-based catalysts is simply explicated.The incorporation of ZrO 2 into CeO 2 greatly modified the textural and structural properties, which results in the obvious enhancement of the OSC and the stabilization, especially the promotion of the low-temperature redox performance. Herein, all of this is thought to be related with composition, preparation or synthesis methods, textural and structural properties of Ce xZr 1-x O 2. Pure Ce xZr 1-x O 2 , usually used as catalyst supports, owns catalytic activity, and Ce xZr 1-x O 2 solid solutions containing noble metal and transitive metal are favorable catalysts.

关 键 词：汽车 尾气净化催化剂 CexZr1-xO2 固溶体 氧化铈 氧化锆 储氧能力 热稳定性 三效催化剂 

分 类 号：TQ426.96[化学工程] O643.36[理学—物理化学]