Promotional effect of cerium on nickel-containing mesoporous silica for carbon dioxide reforming of methane  

作　　者：Yingyi Fu Yanan Wu Wenjia Cai Bin Yue Heyong He 

机构地区：[1]Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials [2]Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University

出　　处：《Science China Chemistry》2015年第1期148-155,共8页中国科学（化学英文版）

基　　金：supported by the National Basic Research Program of China(2009CB623506);the National Natural Science Foundation of China(21371035,21173050);the Shanghai Leading Academic Discipline Project(B108)

摘　　要：A series of Ce-promoted 6.7%Ni-containing mesoporous silica(Ce-Ni-Si O2)with varying Ce content(0.5%–4.8%)was prepared using the evaporation-induced self-assembly method.The characterization results showed that Ce and Ni species were homogeneously incorporated into the mesoporous silica matrix.The catalytic properties of these samples in the dry reforming of methane reaction revealed that the catalysts(e.g.,1.2%Ce-Ni-Si O2)containing highly dispersed small Ni particles exhibited excellent catalytic activity and long-term stability,which is attributed to the anchoring effect of the Ce and its ability to increase surface oxygen species concentration.A series of Ce-promoted 6.7% Ni-containing mesoporous silica （Ce-Ni-SiO2） with varying Ce content （0.5%4.8%） was prepared using the evaporation-induced self-assembly method. The characterization results showed that Ce and Ni species were homogeneously incorporated into the mesoporous silica matrix. The catalytic properties of these samples in the dry reforming of methane reaction revealed that the catalysts （e.g., 1.2% Ce-Ni-SiO2） containing highly dispersed small Ni particles exhibited excellent catalytic activity and long-term stability, which is attributed to the anchoring effect of the Ce and its ability to increase surface oxygen species concentration.

关 键 词：dry reforming CE mesoporous silica anchoring effect 

分 类 号：O643.36[理学—物理化学] O623.11[理学—化学]