文献类型：期刊文献

英文题名：An evaluation of alkylthiols and dialkyl disulfides on deactivation of Cu/Zn catalyst in hydrogenation of dodecyl methyl ester to dodecanol

作者：Huang, Hui[1,2];Cao, Guiping[2];Wang, Shaohong[3]

机构：[1]Ningbo Univ Technol, Sch Chem Engn, Ningbo 315016, Zhejiang, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, UNILAB, Shanghai 200237, Peoples R China;[3]Shanghai Huayi Grp Co Ltd, Shanghai 200431, Peoples R China

年份：2014

卷号：20

期号：3

起止页码：988

外文期刊名：JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY

收录：;EI(收录号：20141317508365);WOS:【SCI-EXPANDED(收录号:WOS:000343636100031)】；

基金：This work is financially supported by Shanghai Huayi (Group) Company, Shanghai Zhongyuan Chemical Company Ltd. One of the authors (Hui Huang) gratefully acknowledges the support of Ningbo Science and Technology Innovation Team (2011882002) and K.C. Wong Education (Hong Kong).

语种：英文

外文关键词：Fatty alcohol; Cu/Zn catalyst; Deactivation; Sulfur

摘要：Deactivation of co-precipitated Cu/Zn catalyst caused by exposure to either alkylthiols or dialkyl disulfides in catalytic hydrogenation of dodecyl methyl ester to dodecanol is explored in a stirred batch reactor. Catalytic activity decrement is highly dependent on levels of poisons, types of thiols/disulfides, chain length of alkanes. XRD, EDS and XPS are employed to characterize the fresh and spent Cu/Zn catalysts. It is evident that sulfuric species prefer to attack zinc oxide, forming chemically adsorbed Zn-SR at low sulfur levels, and ZnS is formed in the highly reductive atmosphere before sulfuric species attacking copper (forming Cu7S4 or Cu31S16). (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.