Effects of Au-Ce strong interactions on catalytic activity of Au/CeO_2/3DOM Al_2O_3 catalyst for soot combustion under loose contact conditions

作     者：靳保芳 韦岳长 赵震 刘坚 姜桂元 段爱军 Baofang Jin;Yuechang Wei;Zhen Zhao;Jian Liu;Guiyuan Jiang;Aijun Duan

作者机构：中国石油大学(北京)重质油国家重点实验室北京102249 

基　　金：supported by the National Natural Science Foundation of China (21477146,21303263) the National High Technology Research and Development Program of China (863 Program,2015AA034603) Beijing Nova Program (Z141109001814072) the Specialized Research Fund for the Doctoral Program of Higher Education of China (20130007120011) the Science Foundation of China University of Petroleum-Beijing (YJRC-2013-13,2462013BJRC003)~~ 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2016年第37卷第6期

页      码：923-933页

摘      要：Au/3DOM（three-dimensionally ordered macroporous） Al2O3 and Au/CeO2/3DOM Al2O3 were prepared using a reduction-deposition method and characterized using scanning electron microscopy,N2 adsorption-desorption,X-ray diffraction,transmission electron microscopy,ultraviolet-visible spectroscopy,temperature-programmed hydrogen reduction,and X-ray photoelectron *** nanoparticles of similar sizes were well dispersed and supported on the inner walls of uniform *** norminal Au loading is 2%.Al-Ce-O solid solution in CeO2/3DOM Al2O3 catalysts can be formed due to the incorporation of Al^3＋ ions into the ceria lattice,which causes the creation of extrinsic oxygen *** extrinsic oxygen vacancies improved the oxygen-transport *** strong metal-support interactions between Au and CeO2 increased the amount of active oxygen on the Au nanoparticle surfaces,and this promoted soot *** activities of the Au-based catalysts were higher than those of the supports（Al2O3 or CeO2/3DOM Al2O3） at low ***/CeO2/3DOM Al2O3 had the highest catalytic activity for soot combustion,with T（10）,T（50）,and T（90） values of 273,364,and 412℃,respectively.

主 题 词：Three-dimensionally ordered macroporous material Gold nanoparticle Ceria Soot combustion Synergistic effect 

学科分类：081705[081705] 0817[工学-轻工类] 08[工学] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(15)61094-4

馆 藏 号：203162776...