Research advances of rare earth catalysts for catalytic purification of vehicle exhausts-Commemorating the 100th anniversary of the birth of Academician Guangxian Xu  

作　　者：Lanyi Wang Xuehua Yu Yuechang Wei Jian Liu Zhen Zhao 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China [2]Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China

出　　处：《Journal of Rare Earths》2021年第10期1151-1180,I0001,共31页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(U1908204,22072095,21761162016);Key Research and Development Program of MOST(2017YFE0131200);General Projects of Liaoning Province Natural Fund(2019-MS-284);National Engineering Laboratory for Mobile Source Emission Control Technology(NELMS2018A04);University Level Innovation Team of Shenyang Normal University and Major Incubation Program of Shenyang Normal University(ZD201901)。

摘　　要：Nowadays,air pollution has become a prominent environmental problem and has attracted much attention.With the increase of vehicle retention quantity,the exhaust emissions have become the main sources of air pollution.To reduce pollution and hazards,vehicle exhaust emission regulations are becoming stricter and stricter,which puts forward higher requirements for purification of vehicle exhausts.At present,rare earths have been widely applied in vehicle exhaust purification because of their good catalytic performance,which is attributed to their unique 4 f electron layer structure occupied without full electrons,excellent oxygen storage/release capacity and redox ability.In this paper,the current status of rare earth catalysts and application of rare earth in different fuel vehicle exhaust catalysts,including three-way catalysts(TWCs)for gasoline vehicles,diesel exhaust catalysts for different pollutants(particulate matter(PM),NOx,CO and HC)and catalysts for new energy vehicles with different fuels,are summarized in detail.Meanwhile,the corresponding mechanisms and the role of rare earth in vehicle exhaust catalysts are also simultaneously described.Furthermore,the challenges and development directions of rare earth catalysts for the purification of vehicle exhausts are also proposed.

关 键 词：Rare earth catalysts Catalytic purification Vehicle exhausts Research advances 

分 类 号：X734.2[环境科学与工程—环境工程] TQ426[化学工程]