文献类型：期刊文献

英文题名：Promoting effect of Ce added to metal oxide supported on Al pillared clays for deep benzene oxidation

作者：Zuo, Shufeng[1,2];Huang, Qinqin[1];Li, Jing[1];Zhou, Renxian[1]

机构：[1]Zhejiang Univ, Inst Catalysis, Hangzhou 310028, Peoples R China;[2]Shaoxing Univ, Inst Appl Chem, Shaoxing 312000, Peoples R China

年份：2009

卷号：91

期号：1-2

起止页码：204

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：SCI-EXPANDED(收录号：WOS:000269374400025)、、EI(收录号：20093112233796)、Scopus(收录号：2-s2.0-67651159261)、WOS

基金：We gratefully acknowledge the financial supports from the Ministry of Science and Technology of China (no. 2004 CB 719504) and Nature Science Foundation of China (no. 20577043).

语种：英文

外文关键词：Pillared clay; Transition metal; Cerium; Redox property; Benzene oxidation

外文摘要：Al pillared clays (Al-PILC) were used to support transition metals (M = Cr, Mn, Fe, Co, Ni and Cu) and Ce for the deep oxidation of low concentration of benzene. The effect of Ce addition to M/Al-PILC was also investigated. The catalysts were characterized by X-ray powder diffraction, N-2 adsorption and H-2 temperature programmed reduction techniques. Introduction of Ce into M/Al-PILC improves dispersion of transition metals, changes the redox properties of metal oxide and makes it easier to be reduced by the interaction between the two oxides, increasing lattice oxygen lability. In activity tests Mn based catalysts were observed to be the most active among the transition metals, and adding Ce obviously improved the activity and stability of M/Al-PILC Moreover, Ce content had a great effect on the activity of M/Al-PILC. MnCe (18:1)/Al-PILC exhibited the highest activity, and the temperature for complete benzene conversion using this catalyst was about 310 degrees C. (C) 2009 Elsevier B.V. All rights reserved.