中文摘要：

考察了CeO2修饰及未修饰的Ni/Mo/SBA-15催化剂在CH4-CO2重整上的催化性能并采用N2吸脱附、CO2程序升温脱附、H2程序升温还原、傅里叶红外光谱、X射线衍射、扫描电子显微镜和X射线光电子能谱对催化剂进行了表征.结果表明,在常压,800oC条件下,经过100h在线评价后,Ni/Mo/SBA-15和CeO2/Ni/Mo/SBA-15催化剂仍具有高的反应活性和规整的六方介孔结构,其中CeO2修饰的CeO2/Ni/Mo/SBA-15催化剂表面没有积炭形成,表明CeO2的加入促进了Ni物种在SBA-15介孔分子筛表面的分散,从而阻止了Ce/Ni/Mo/SBA-15催化剂上Ni的烧结和积炭.

英文摘要：

A Ni/Mo/SBA-15 catalyst was modified with CeCeO2 and compared with the unmodified catalyst.The catalysts were characterized by N2 adsorption,CCeO2 temperature-programmed desorption,H2 temperature-programmed reduction,Fourier transform infrared spectrometer,X-ray diffraction,scanning electron microscopy,and X-ray photoelectron spectroscopy.Both the Ni/Mo/SBA-15 and CeCeO2 /Ni/Mo/SBA-15 catalysts gave good catalytic activities at atmospheric pressure.The CeCeO2 impregnated Ni/Mo/SBA-15 catalyst exhibited excellent stability at 800 oC for 100 h on stream,and after the reaction,carbon deposits were not formed on the catalyst.The Ni/Mo/SBA-15 and CeCeO2 /Ni/Mo/SBA-15 catalysts had a regular hexagonal mesoporous structure.The nickel species and the Ce-Mo oxide components were all in the SBA-15 mesopores.This prevented carbon deposition and sintering of the nickel species in the CeCeO2 /Ni/Mo/SBA-15 catalyst.