文献类型：期刊文献

英文题名：Hydrodechlorination of chlorophenols at low temperature over highly defective Pd catalyst

作者：Cheng, Ling[1];Jin, Zhonghao[1];Wang, Xingyi[1]

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China

年份：2013

卷号：41

起止页码：60

外文期刊名：CATALYSIS COMMUNICATIONS

收录：;EI(收录号：20133216582311);WOS:【SCI-EXPANDED(收录号:WOS:000324283800014)】；

基金：We would like to acknowledge the financial support from National Basic Research Program of China (Nos. 2010CB732300, 2011AA03A406) and National Natural Science Foundation of China (No. 21277047) and Commission of Science and Technology of Shanghai Municipality (11JC1402900).

语种：英文

外文关键词：Hydrodechlorination; Chlorophenols; Pd catalyst; DFT calculation

摘要：Hydrodechlorination of chlorophenols at lower temperature was investigated over Pd catalyst supported on mesoporous silica-carbon nanocomposites (Pd/MSC). Characterization by XRD, HRTEM and H-2-TPD has shown Pd nanoparticles of 7 nm with saw-edged GB at nanocrystal joining areas and edge steps. The catalyst exhibits high activity for hydrodechlorination of chlorophenols at 258-313 K under normal hydrogen pressure. Using triethylamine as a probe combining with further theoretical calculation, it reveals that the HDC of chlorophenols at low temperature mainly occurs on Pd defects, meanwhile reactive H species plays a direct role when the reactant adsorbs on Pd via the formation of eithei pi- or sigma-complex. (C) 2013 The Authors. Published by Elsevier Inc. All rights reserved.