The influence of pH on the reduction of CO and CO2 to hydrocarbons on copper electrodes

被引：334
|
作者：
Schouten, Klaas Jan P. [1 ]
Gallent, Elena Perez [1 ]
Koper, Marc T. M. [1 ]
机构：
[1] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2014年 / 716卷
关键词：
Carbon dioxide; Electrochemical reduction; Copper single crystal electrodes; pH dependence; Reaction mechanism; Carbon monoxide; SINGLE-CRYSTAL ELECTRODES; ELECTROCHEMICAL REDUCTION; METAL-ELECTRODES; CARBON-DIOXIDE; ELECTROREDUCTION; SELECTIVITY; INSIGHTS;
D O I：
10.1016/j.jelechem.2013.08.033
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The pH is an important parameter in the reaction mechanism of the electrochemical reduction of carbon dioxide and carbon monoxide to methane and ethylene on copper electrodes. We have investigated the influence of the pH on this reaction using Cu(111) and Cu(100) single crystal electrodes. The results support our recently proposed reaction mechanism, in which two different reaction pathways to ethylene can be distinguished: a first, pH-dependent pathway that has a common intermediate with the formation of methane that occurs mainly on Cu(111), and a second, pH-independent pathway via a carbon monoxide dimer. The latter pathway occurs on Cu(1 00) only. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：53 / 57
页数：5
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