Influence of iron and copper oxides on polychlorinated diphenyl ether formation in heterogeneous reactions
文献类型：期刊论文
| 作者 | Liu, Wenxia ; Shen, Lianfeng ; Zhang, Fawen ; Liu, Wenbin ; Zheng, Minghui ; Yang, Xitian |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2013 |
| 卷号 | 20期号:8页码:5569-5576 |
| 通讯作者 | Liu, WX |
| 中文摘要 | Polychlorinated diphenyl ether (PCDE) has attracted great attention recently as an important type of environmental pollutant. The influence of iron and copper oxides on formation of PCDEs was investigated using laboratory-scale flow reactors under air and under nitrogen at 350 A degrees C, a temperature corresponding to the post-combustion zone of a municipal solid waste incinerator. The results show that the 2,2',3,4,4',5,5',6-otachlorodiphenyl ether (OCDE) formed from the condensation of pentachlorophenol (PCP) and 1,2,4,5-tetrachlorobenzene (Cl(4)Bz) is the predominant congener formed on the SiO2/Fe2O3 surface with and without oxygen. This indicated that HCl elimination between PCP and 1,2,4,5-Cl(4)Bz molecules formed 2,2',3,4,4',5,5',6-OCDE in the presence of Fe2O3. On the other hand, decachlorodiphenyl ether, nonachlorodiphenyl ether, and OCDE were the dominant products on the SiO2/CuO surface without oxygen, although the 2,2',3,4,4',5,5',6-OCDE was the dominant product on the SiO2/CuO surface with oxygen. Therefore, the presence of Fe2O3 and CuO influences the formation and homologue distribution of PCDEs, which shifted towards the lower chlorinated species. Fe2O3 can promote both the condensation and dechlorination reaction without oxygen(.) On the contrary, with oxygen, Fe2O3 suppresses the condensation of chlorobenzene and chlorophenol to form PCDEs and polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). CuO can increase the formation of lower chlorinated PCDEs and PCDDs without oxygen. In conclusion, the different fly ash components have a major influence on PCDE emissions. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000321908600047 |
| 公开日期 | 2014-06-06 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7484]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Wenxia,Shen, Lianfeng,Zhang, Fawen,et al. Influence of iron and copper oxides on polychlorinated diphenyl ether formation in heterogeneous reactions[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2013,20(8):5569-5576. |
| APA | Liu, Wenxia,Shen, Lianfeng,Zhang, Fawen,Liu, Wenbin,Zheng, Minghui,&Yang, Xitian.(2013).Influence of iron and copper oxides on polychlorinated diphenyl ether formation in heterogeneous reactions.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,20(8),5569-5576. |
| MLA | Liu, Wenxia,et al."Influence of iron and copper oxides on polychlorinated diphenyl ether formation in heterogeneous reactions".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 20.8(2013):5569-5576. |
入库方式： OAI收割
来源：生态环境研究中心
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