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Water-promoted catalytic hydrodechlorination of transformer oil-contained PCBs in liquid system under mild conditions

文献类型：期刊论文

作者Ma, Xuanxuan1,2; Liu, Ying1; Liu, Sujing1; Xia, Chuanhai1
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2014
卷号144页码:580-587
关键词Transformer oil-contained PCBs Pd/C Hydrodechlorination (HDC) Characterization
ISSN号0926-3373
产权排序[Ma, Xuanxuan; Liu, Ying; Liu, Sujing; Xia, Chuanhai] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China; [Ma, Xuanxuan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
通讯作者Xia, CH (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China. chxia@yic.ac.cn
中文摘要The influences of solvent system on the hydrodechlorination (HDC) of transformer oil-contained PCBs with H-2 over Pd/C catalyst were studied. The addition of water in solvent system significantly accelerated the HDC reaction, which suggested its critical role for enabling Pd/C catalyst to keep high activity and stability. The mechanism of this phenomenon was studied through catalyst characterization (TEM, XRD and XPS), and the change of surface composition of Pd/C catalyst in different solvent in the HDC reaction was raveled. Above results indicated that water in isopropanol-water prevented NaCl accumulating on the surface of catalyst, which avoided the decline in activity and stability of the catalyst. On the basis of these studies, isopropanol-water (60/40, v/v) solvent system was developed to dispose high concentration transformer oil-contained PCBs, where the chloride atom removal ratio of transformer oil-contained PCBs at 2% (w/w) and 5% (w/w) concentration could reach 95.2% and 88.0% for 10 h under mild conditions respectively, and the Pd/C could be recovered and reused at least 10 times without any loss of catalytic activity. (C) 2013 Elsevier B.V. All rights reserved.
英文摘要The influences of solvent system on the hydrodechlorination (HDC) of transformer oil-contained PCBs with H-2 over Pd/C catalyst were studied. The addition of water in solvent system significantly accelerated the HDC reaction, which suggested its critical role for enabling Pd/C catalyst to keep high activity and stability. The mechanism of this phenomenon was studied through catalyst characterization (TEM, XRD and XPS), and the change of surface composition of Pd/C catalyst in different solvent in the HDC reaction was raveled. Above results indicated that water in isopropanol-water prevented NaCl accumulating on the surface of catalyst, which avoided the decline in activity and stability of the catalyst. On the basis of these studies, isopropanol-water (60/40, v/v) solvent system was developed to dispose high concentration transformer oil-contained PCBs, where the chloride atom removal ratio of transformer oil-contained PCBs at 2% (w/w) and 5% (w/w) concentration could reach 95.2% and 88.0% for 10 h under mild conditions respectively, and the Pd/C could be recovered and reused at least 10 times without any loss of catalytic activity. (C) 2013 Elsevier B.V. All rights reserved.
学科主题Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]POLYBROMINATED DIPHENYL ETHERS ; NANOSCALE ZEROVALENT IRON ; POLYCHLORINATED-BIPHENYLS ; ROOM-TEMPERATURE ; METAL CATALYSTS ; DECHLORINATION ; DEGRADATION ; REACTIVITY ; MIXTURES ; HYDRODEHALOGENATION
收录类别SCI
资助信息National Natural Science Foundation of China [21007088]; Knowledge Innovation Program of Chinese Academy of Sciences [KZCX2-EW-206]; Research Grant for Outstanding Young Scientists of Shandong Province [BS2009CL006]
原文出处http://dx.doi.org/10.1016/j.apcatb.2013.07.067
语种英语
WOS记录号WOS:000327686200069
公开日期2014-07-08
源URL[http://ir.yic.ac.cn/handle/133337/7031]  
专题烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Xuanxuan,Liu, Ying,Liu, Sujing,et al. Water-promoted catalytic hydrodechlorination of transformer oil-contained PCBs in liquid system under mild conditions[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2014,144:580-587.
APA Ma, Xuanxuan,Liu, Ying,Liu, Sujing,&Xia, Chuanhai.(2014).Water-promoted catalytic hydrodechlorination of transformer oil-contained PCBs in liquid system under mild conditions.APPLIED CATALYSIS B-ENVIRONMENTAL,144,580-587.
MLA Ma, Xuanxuan,et al."Water-promoted catalytic hydrodechlorination of transformer oil-contained PCBs in liquid system under mild conditions".APPLIED CATALYSIS B-ENVIRONMENTAL 144(2014):580-587.

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来源：烟台海岸带研究所

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