文献类型：期刊文献

英文题名：Cumene hydroperoxide hydrogenation over Pd/C catalysts

作者：Zhu, Qing-cai[1];Shen, Ben-xian[1];Ling, Hao[1];Gu, Rong[2]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]SINOPEC, Shanghai Gaoqiao Co, Shanghai 200137, Peoples R China

年份：2010

卷号：175

期号：1-3

起止页码：646

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20095212571248);WOS:【SCI-EXPANDED(收录号:WOS:000274490400080)】；

基金：The Shanghai Gaoqiao Company is acknowledged for products analysis and financially supporting this work. The authors thank the United Laboratory Research Centre of Chemical Engineering, East China University of Science and Technology for catalyst characterization.

语种：英文

外文关键词：Cumene hydroperoxide; Hydrogenation; Pd/C; alpha-Cumyl alcohol; Kinetics

摘要：Pd/C catalysts were prepared by wet impregnation using K2PdCl4 as precursor and their performance in hydrogenation of cumene hydroperoxicle (CHP) was investigated. The catalytic activity was examined on the formaldehyde-reduced and on the hydrogen-reduced Pd/C catalysts. Results from XRD, TEM and CO chemisorption showed that reduction methods have a significant impact on the palladium particles size of resulting catalysts. Formaldehyde-reduced Pd/C catalyst has larger palladium particles than hydrogen-reduced Pd/C catalyst. Consequently, higher activity but lower selectivity to alpha-cumyl alcohol (CA) was obtained on formaldehyde-reduced Pd/C catalyst. Moreover, hydrogenation of CHP over hydrogen-reduced Pd/C catalyst can give similar CA selectivity to Na2SO3 reduction process, an industrial process for CA production. High rate of CHP conversion and CA selectivity can be obtained at an elevated temperature and H-2 pressure. Kinetics studies revealed that CHP hydrogenation is zero-order for CHP concentration and the activation energy was calculated to be 13.6 kJ/mol. (C) 2009 Elsevier B.V. All rights reserved.