Electrochemical Reduction of CO2 at Metal Electrodes in a Distillable Ionic Liquid

被引：42

作者：

Chen, Lu ^{[1
,2
]}

Guo, Si-Xuan ^{[1
,2
]}

Li, Fengwang ^{[1
,2
]}

Bentley, Cameron ^{[1
,2
]}

Horne, Mike ^{[3
]}

Bond, Alan M. ^{[1
,2
]}

Zhang, Jie ^{[1
,2
]}

机构：

[1] Monash Univ, ARC Ctr Excellence Electromat Sci, Clayton, Vic 3800, Australia

[2] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

[3] CSIRO Minerals Resources Flagship, Clayton, Vic 3168, Australia

来源：

CHEMSUSCHEM | 2016年 / 9卷 / 11期

关键词：

carbon dioxide; catalysts; electrocatalysis; electrochemical reduction; metals; CARBON-DIOXIDE; SELECTIVE CONVERSION; CAPTURE; ELECTROREDUCTION; HYDROCARBONS; MECHANISM; CATALYSTS; METHANOL; MEDIA; WATER;

D O I：

10.1002/cssc.201600359

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electroreduction of CO2 in the distillable ionic liquid dimethylammonium dimethylcarbamate (dimcarb) has been investigated with 17 metal electrodes. Analysis of the electrolysis products reveals that aluminum, bismuth, lead, copper, nickel, palladium, platinum, iron, molybdenum, titanium and zirconium electroreduce the available protons in dimcarb to hydrogen rather than reducing CO2. Conversely, indium, tin, zinc, silver and gold are able to catalyze the reduction of CO2 to predominantly carbon monoxide (CO) and to a lesser extent, formate ([HCOO](-)). In all cases, the applied potential was found to have a minimal influence on the distribution of the reduction products. Overall, indium was found to be the best electrocatalyst for CO2 reduction in dimcarb, with faradaic efficiencies of approximately 45% and 40% for the generation of CO and [HCOO](-), respectively, at a potential of -1.34V versus Cc(+/0) (Cc(+)=cobaltocenium) employing a dimethylamine to CO2 ratio of less than 1.8:1.

引用

页码：1271 / 1278

页数：8

共 53 条

[1] Ionic liquids in the electrochemical valorisation of CO2 [J].