| Water-promoted catalytic hydrodechlorination of transformer oil-contained PCBs in liquid system under mild conditions | |
Ma, Xuanxuan1,2; Liu, Ying1; Liu, Sujing1; Xia, Chuanhai1 ; 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
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| 发表期刊 | APPLIED CATALYSIS B-ENVIRONMENTAL
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| ISSN | 0926-3373 |
| 2014 | |
| 卷号 | 144页码:580-587 |
| 关键词 | Transformer Oil-contained Pcbs Pd/c Hydrodechlorination (Hdc) Characterization |
| 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 |
| 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.; 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. |
| 文章类型 | Article |
| 资助机构 | 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] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | POLYBROMINATED DIPHENYL ETHERS ; NANOSCALE ZEROVALENT IRON ; POLYCHLORINATED-BIPHENYLS ; ROOM-TEMPERATURE ; METAL CATALYSTS ; DECHLORINATION ; DEGRADATION ; REACTIVITY ; MIXTURES ; HYDRODEHALOGENATION |
| 研究领域[WOS] | Chemistry ; Engineering |
| WOS记录号 | WOS:000327686200069 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/7031 |
| 专题 | 海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室 |
| 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 |
| 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,&Xia, CH .(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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