TY - JOUR
T1 - Preferential oxidation of CO in excess H2 over the CeO 2/CuO catalyst
T2 - Effect of initial support
AU - Gao, Zhiming
AU - Gong, Yuanyuan
AU - Zhang, Qiang
AU - Deng, Hao
AU - Yue, Yong
PY - 2014/7
Y1 - 2014/7
N2 - Three series of CeO2/CuO samples were prepared by impregnation method and characterized by XRD, N2 adsorption-desorption, temperature-programmed reduction (TPR), XPS and TEM techniques. In comparison with the samples prepared with CuO as initial support, the samples with Cu(OH)2 as initial support have higher reducibilities and smaller relative TPR peak areas, and also larger specific surface areas at calcination temperatures of 400 °C-600 °C. As a result, Cu(OH)2 is better than CuO as initial support for preferential oxidation of CO in excess H 2 (CO-PROX). The best catalytic performance was achieved on the sample calcined at 600 °C and with an atomic ratio of Ce/Cu at 40%. XPS analyses indicate that more interface linkages Ce-O-Cu could be formed when it was calcined at 600 °C. And the atomic ratio of Ce/Cu at 40% led to a proper reducibility for the sample as illustrated by the TPR measurements.
AB - Three series of CeO2/CuO samples were prepared by impregnation method and characterized by XRD, N2 adsorption-desorption, temperature-programmed reduction (TPR), XPS and TEM techniques. In comparison with the samples prepared with CuO as initial support, the samples with Cu(OH)2 as initial support have higher reducibilities and smaller relative TPR peak areas, and also larger specific surface areas at calcination temperatures of 400 °C-600 °C. As a result, Cu(OH)2 is better than CuO as initial support for preferential oxidation of CO in excess H 2 (CO-PROX). The best catalytic performance was achieved on the sample calcined at 600 °C and with an atomic ratio of Ce/Cu at 40%. XPS analyses indicate that more interface linkages Ce-O-Cu could be formed when it was calcined at 600 °C. And the atomic ratio of Ce/Cu at 40% led to a proper reducibility for the sample as illustrated by the TPR measurements.
KW - CO
KW - TPR
KW - XPS
KW - interface
KW - preferential oxidation
UR - http://www.scopus.com/inward/record.url?scp=84905825339&partnerID=8YFLogxK
U2 - 10.1016/S2095-4956(14)60174-1
DO - 10.1016/S2095-4956(14)60174-1
M3 - Article
AN - SCOPUS:84905825339
SN - 2095-4956
VL - 23
SP - 475
EP - 482
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
IS - 4
ER -