The study on the dechlorination of OCDD with Pd/C catalyst in ethanol-water solution under mild conditions

	The study on the dechlorination of OCDD with Pd/C catalyst in ethanol-water solution under mild conditions
	Zhang, Feng; Chen, Jiping; Zhang, Haijun; Ni, Yuwen; Liang, Xinmiao
刊名	chemosphere
	2007-08-01
卷号	68 期号:9 页码:1716-1722
关键词	hydrodechlorination Pd/C catalyst dechlorination pathway OCDD
通讯作者	陈吉平
产权排序	1;1
英文摘要	dechlorination of octachlorodibenzo-p-dioxin (ocdd) was carried out in ethanol-water (v/v = 1:1) solution of naoh in the presence of pd/c catalysts with the use of h-2. the substrate was dechlorinated with pd/c under mild conditions (atmospheric pressure and < 100 degrees c to give a chlorine-free product, dibenzo-p-dioxin (dd), in high yields. after reaction of 3 h at 50 degrees c, 95.9% ocdd was degraded to low dechlorinated congeners and the yield of dd was 77.4%. we have also studied the dechlorination selectivity of chlorine atoms on the different substituted positions and postulated the dechlorination pathway of ocdd. for ocdd, the 2-position has higher reactivity than 1-position, but the difference is very small. from the distribution statistics of the intermediates during the reaction, we postulate that the steric effect plays an important role during the reaction and affect the dechlorination pathway of ocdd. (c) 2007 elsevier ltd. all rights reserved.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	environmental sciences
研究领域[WOS]	environmental sciences & ecology
关键词[WOS]	dibenzo-p-dioxins ; supported palladium catalysts ; coplanar pcbs ; fly-ash ; degradation ; decomposition ; calcium ; pcdfs ; pcdds
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000248134200015
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/98979]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, Dalian, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Feng,Chen, Jiping,Zhang, Haijun,et al. The study on the dechlorination of OCDD with Pd/C catalyst in ethanol-water solution under mild conditions[J]. chemosphere,2007,68(9):1716-1722.
APA	Zhang, Feng,Chen, Jiping,Zhang, Haijun,Ni, Yuwen,&Liang, Xinmiao.(2007).The study on the dechlorination of OCDD with Pd/C catalyst in ethanol-water solution under mild conditions.chemosphere,68(9),1716-1722.
MLA	Zhang, Feng,et al."The study on the dechlorination of OCDD with Pd/C catalyst in ethanol-water solution under mild conditions".chemosphere 68.9(2007):1716-1722.