Cerium(Ⅳ)oxide nanocomposites:Catalytic properties and industrial application  

作　　者：Samira Bagheri Ibrahim Khalil Nurhidayatullaili Muhd Julkapli 

机构地区：[1]Nanotechnology and Catalysis Research Centre(NANOCAT),Institute for Advanced Studies,Level 3,Block A,University of Malaya,50603 Kuala Lumpur,Malaysia

出　　处：《Journal of Rare Earths》2021年第2期129-139,共11页稀土学报（英文版）

基　　金：the Universiti Malaya Research Grant(UMRG RP044A-17AET)for the financial support。

摘　　要：This review article provides a new insight on the application of cerium oxide(CeO_(2))-metal oxide nanocomposites as catalyst with enhanced reducibility and improved oxygen(O_(2))storage capacity,especially in the varying chemical reaction processes including combustion,oxidation,epoxidation and redox.The CeO_(2)-metal oxide interaction plays an important role in controlling particle size,O_(2) availability and coke resistance properties of the catalyst.Strong metal oxide-CeO_(2) interaction also assists in generating small and highly dispersed particles,resists sintering of catalyst particles during the catalysis process,and consequently improves the O_(2) availability of the catalyst.Indeed,CeO_(2) not only provides an active support to heterogeneous catalyst,but also creates a new active site at the metal-support interface to produce stronger nanoparticle bonding through the surface O_(2) vacancy.This consequently produces a heterogeneous catalytic system with promising reaction rate and catalytic stability in many industrial applications such as CO_(2) hydrogenation,CO oxidatio n,biodiesel productio n,gas reduction,photocatalytic and methane steam reforming.

关 键 词：INTERFACE COMPOSITION Synergistic effect Active species Physiochemical Rare earths 

分 类 号：TQ426[化学工程] TB332[一般工业技术—材料科学与工程]