Electrochemical Reduction of Carbon Dioxide on Stainless Steel Electrode in Acetonitrile

被引：9
|
作者：
Lv, Weixin [1 ]
Zhang, Rui [1 ]
Gao, Pengran [1 ]
Gong, Chunxia [1 ]
Lei, Lixu [1 ]
机构：
[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Jiangsu, Peoples R China
来源：
ENVIRONMENTAL PROTECTION AND RESOURCES EXPLOITATION, PTS 1-3 | 2013年 / 807-809卷
关键词：
Electrochemical reduction; Carbon dioxide; Sacrificial anode; Zinc oxalate; CO2;
D O I：
10.4028/www.scientific.net/AMR.807-809.1322
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Electrochemical reduction of carbon dioxide (CO2) to useful organic compounds is of great significance to decrease CO2 emission. The electrochemical reduction of CO2 is carried out in acetonitrile with tetrabutylammonium perchlorate as the electrolyte on a stainless steel cathode in a single cell; by using a sacrificial zinc anode, the product is zinc oxalate when the cathode potential is between -2.5 V and -3.5 V vs. Ag rod electrode. When the potential is less than -3.5 V, acetonitrile is decomposed, and the product is mainly zinc cyanide; when it is higher than -2.5 V, the main product is a basic zinc carbonate. Therefore, only when the cathode potential is in a proper range can CO2 molecule obtain an electron and dimerize to form C2O42-, which combines Zn2+ from the anode to form zinc oxalate.
引用
收藏
页码：1322 / 1325
页数：4
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