Analysis on the effect of operating conditions on electrochemical conversion of carbon dioxide to formic acid

被引：78

作者：

Kim, Hak-Yoon ^{[1
,2
]}

Choi, Insoo ^{[1
]}

Ahn, Sang Hyun ^{[1
]}

Hwang, Seung Jun ^{[1
]}

Yoo, Sung Jong ^{[1
]}

Han, Jonghee ^{[1
]}

Kim, Jihyun ^{[2
]}

Park, Hansoo ^{[3
]}

Jang, Jong Hyun ^{[1
]}

Kim, Soo-Kil ^{[3
]}

机构：

[1] Korea Inst Sci & Technol, Fuel Cell Res Ctr, Seoul 136791, South Korea

[2] Korea Univ, Green Sch, Seoul 136701, South Korea

[3] Chung Ang Univ, Sch Integrat Engn, Seoul 156756, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 29期

关键词：

Carbon dioxide; Electrochemical conversion; Formic acid; Sn electrode; FIXED-BED REACTOR; CO2; REDUCTION; SELECTIVITY; ELECTRODES; ELECTROREDUCTION; METHANE;

D O I：

10.1016/j.ijhydene.2014.03.145

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrochemical reduction of CO2 to HCOOH was performed on a Sn electrode using a proton exchange membrane-embedded electrolysis cell. The effects of reaction conditions such as catholyte and anolyte types, reduction potential, catholyte pH, and reaction temperature on the amount of HCOOH and its faradaic efficiency were investigated. Four different electrolytes (KOH, KHCO3, KCl, KHSO4) were chosen as the candidate catholyte and anolyte; the most suitable electrolyte was chosen by monitoring the amount of HCOOH and faradaic efficiency. The effect of the pH of the selected catholyte on the conversion of CO2 to HCOOH was also investigated. In addition, the reaction temperature was varied and its effect was studied. From the observations made, we determined the optimal reaction conditions for the production of HCOOH via the electrochemical reduction of CO2 by a systematic approach. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：16506 / 16512

页数：7

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