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[1]金士威,华晔,李晨曦,等.α\|丙二醇\|水相中氯代二噁英的催化加氢脱氯降解[J].武汉工程大学学报,2013,(12):7-11.[doi:103969/jissn16742869201312002]
　JIN Shi\|wei,HUA Ye,ZOU Bin,et al.Catalytic hydrodechlorination of chlorinated dioxins in α\|propanediol\|water solution[J].Journal of Wuhan Institute of Technology,2013,(12):7-11.[doi:103969/jissn16742869201312002]
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2013年12期
页码:
7-11
栏目:
出版日期:
2013-12-31

文章信息/Info

Title:
Catalytic hydrodechlorination of chlorinated dioxins in α\|propanediol\|water solution
文章编号:
16742869(2013)12000705
作者:
金士威1; 2; 华晔2; 李晨曦2; 邹彬2; Daniel Dianchen Gang2; 3
1.马里兰大学土木与环境工程系, 美国马里兰州 大学公园 20742;2.武汉工程大学化工与制药学院，绿色化工过程教育部重点实验室，湖北 武汉 430074;3.路易斯安那大学拉法叶分校土木工程系, 美国路易斯安那州 拉法叶 70504
Author(s):
JIN Shi\|wei1; 2;  HUA Ye2;  ZOU Bin2;  LI Chen\|xi2; Daniel Dianchen Gang2; 3
1.Department of Civil and Environmental Engineering, University of Maryland, College Park, MD 20742, USA; 2.School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, China;3.Department of Civil Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, USA
关键词:
二噁英; 加氢脱氯; 钯/炭催化剂
Keywords:
dioxins;  hydrodechlorination;  Pd/C catalyst
分类号:
TQ124.4
DOI:
103969/jissn16742869201312002
文献标志码:
A
摘要:
二噁英类物质由于具有亲脂性、高毒性、化学结构稳定、难生物降解而在环境中持久存在，成为持久性有机污染物的典型代表.二噁英的去除方法研究，一直是国际研究的热点.以5% 钯/炭为催化剂，氢气作为氢源，以环境友好的α\|丙二醇\|水为溶剂，在1 mol/L 氢氧化钠的碱性条件下，研究了1,2,7,8\|四氯代二噁英(1,2,7,8\|TCDD)的催化加氢脱氯降解.探讨了反应温度、初始浓度、反应时间、催化剂用量等对1,2,7,8\|TCDD去除率的影响.结果表明，在反应初期(前5 min)，反应速率较快；在反应温度为45 ℃，催化剂用量为0.5 g/mL，反应时间为150 min的条件下，1,2,7,8\|TCDD的去除率达97.0%；初始浓度对1,2,7,8\|TCDD的去除率没有影响.初步试验结果表明，催化加氢脱氯降解是去除环境中氯代二噁英的有效手段，但实际应用还有待于进一步研究.
Abstract:
Dioxins are persistent in the environment as a typical representative of persistent organic pollutants because of their lipophilicity, highly toxicity, stable chemical structure and anti\|biodegradation. The research about removal methods of dioxins has become an international research focus. Dechlorinations of polychlorinated dibenzo\|p\|dioxins were carried out in α\|propanediol\|water solution of 1 mol/L NaOH in the presence of Pd/C catalyst with using of H2. The effects of reaction temperature, initial concentration, reaction time, catalyst dosage on the removal of 1,2,7,8\|TCDD were studied. It is found that the reaction rate is very fast in the beginning of the reaction (before 5 min); the optimal reaction conditions are as follows: reaction temperature is 45 ℃, the amount of catalyst is 0.5 g/mL, reaction time is 150 min; the removal rate of 1,2,7,8\|TCDD is over 97.0% at this point; initial concentration of 1,2,7,8\|TCDD has no effect on the removal rate. The preliminary test results show that catalytic hydrodechlorination is an effective means to remove chlorinated dioxins in the environment; however, further studies are necessary for its practical applications.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：20131031基金项目：湖北省教育厅青年基金项目(Q20091503), 国家自然科学基金重点项目(21037004)作者简介：金士威(1972\|)，男，浙江东阳人，教授，博士，博士研究生导师，University of Maryland 访问学者．研究方向：化工污染物监测与治理．
更新日期/Last Update: 2014-01-07