Reductive dehalogenation of 1,3-dichloropropane by a [Ni(tetramethylcyclam) ]Br2-Nafion® modified electrode

被引：0

作者：

Fontmorin, J.-M. ^{[1
,3
]}

He, W.Y. ^{[1
,3
]}

Floner, D. ^{[2
,3
]}

Fourcade, F. ^{[1
,3
]}

Amrane, A. ^{[1
,3
]}

Geneste, F. ^{[2
,3
]}

机构：

[1] Ecole Nationale Supérieure de Chimie de Rennes/Université de Rennes 1, CNRS, UMR 6226, 11 allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France

[2] Université de Rennes 1, CNRS, Campus de Beaulieu, 35042 Rennes Cedex, France

[3] Université Européenne de Bretagne, 5 boulevard Laënnec, 35000 Rennes, France

来源：

Electrochimica Acta | 2014年 / 137卷

关键词：

Electrochemical electrodes - Electrolytic reduction - Cyclic voltammetry - Ion chromatography - Ions - Catalysis - Chlorine compounds - Felt - Catalyst activity - Graphite electrodes;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Dechlorination reaction of 1,3-dichloropropane, a contaminant solvent, was investigated by electrochemical reduction in aqueous medium using a Ni(tmc)Br2 complex, known as effective catalyst in dehalogenation reactions. The catalytic activity of the complex was first investigated by cyclic voltammetry and flow homogeneous redox catalysis using a graphite felt as working electrode. A total degradation of 1,3-dichloropropane was obtained after 5 h of electrolysis with a substrate/catalyst ratio of 2.3. The concentration of chloride ions determined by ion chromatography analysis showed a dechlorination yield of 98%. The complex was then immobilized on the graphite felt electrode in a Nafion® film. Flow heterogeneous catalytic reduction of 1,3-dichloropropane was then carried out with the [Ni(tmc)]Br 2-modified Nafion® electrode. GC analyses underlined the total degradation of the substrate in only 3.5 h with a substrate/catalyst ratio of 100. A dechlorination yield of 80% was obtained, as seen with ion chromatography analyses of chloride ion. Comparison of both homogeneous and heterogeneous reactions highlighted the interest of the [Ni(tmc)]Br 2-modified Nafion® electrode that led to a higher stability of the catalyst with a turnover number of 180 and a higher current efficiency. © 2014 Published by Elsevier Ltd.

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页码：511 / 517