文献类型：期刊文献

英文题名：Selective Liquid-phase Hydrodechlorination of Chlorotrifluoroethylene over Palladium-Supported Catalysts: Activity and Deactivation

作者：Meng, Bao-Chuan[1];Sun, Zhao-Yang[1];Ma, Jin-Peng[1];Cao, Gui-Ping[1];Yuan, Wei-Kang[1]

机构：[1]E China Univ Sci & Technol, UNILAB Res Ctr React Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：138

期号：1-2

起止页码：68

外文期刊名：CATALYSIS LETTERS

收录：;EI(收录号：20102813066254);WOS:【SCI-EXPANDED(收录号:WOS:000279454300012)】；

基金：This work is financially supported by Shanghai 3F New Materials CO., Ltd. and Shanghai Huayi (Group) Company.

语种：英文

外文关键词：Trifluoroethylene; Activated carbon; Pd/AC catalyst; HNO(3) pretreatment; Deactivation

摘要：Liquid-phase hydrodechlorination of chlorotrifluoroethylene (CTFE) to trifluoroethylene (TrFE) with molecular hydrogen was studied over palladium-supported catalysts. BaSO(4), Al(2)O(3) and activated carbon (AC) were used as supports, respectively. The results showed that the Pd/AC catalysts exhibit higher activity than Pd/BaSO(4) and Pd/Al(2)O(3). The treatment of activated carbon with HNO(3) led to a considerable increase of surface functional groups containing oxygen atoms, which resulted in a higher dispersion of palladium on the supports and enhancement of catalytic activity. The stability of the catalyst was investigated, one reason for the inhibition was the accumulation of NaCl on the surface of Pd/AC that blocks the pores of carbon support. The activity of Pd/AC could partially recovered by washing with water. The other irreversible deactivation of the catalyst are from the change of particle size and the pore structure, leaching of Pd, a decrease of BET surface area and Pd surface area of Pd/AC catalyst.