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

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Title: Analysis on the effect of operating conditions on electrochemical conversion of carbon dioxide to formic acid.
Authors: Kim, Hak-Yoon1,2, Choi, Insoo1, Ahn, Sang Hyun1, Hwang, Seung Jun1, Yoo, Sung Jong1, Han, Jonghee1, Kim, Jihyun2, Park, Hansoo3, Jang, Jong Hyun1 jhjang@kist.re.kr, Kim, Soo-Kil3 sookilkim@cau.ac.kr
Source: International Journal of Hydrogen Energy. Oct2014, Vol. 39 Issue 29, p16506-16512. 7p.
Subjects: Energy conversion, Electrochemistry, Carbon dioxide, Formic acid, Electrolytes, Proton exchange membrane fuel cells
Abstract: Electrochemical reduction of CO 2 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, KHCO 3 , KCl, KHSO 4 ) 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 CO 2 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 CO 2 by a systematic approach. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Electrochemical reduction of CO 2 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, KHCO 3 , KCl, KHSO 4 ) 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 CO 2 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 CO 2 by a systematic approach. [ABSTRACT FROM AUTHOR]
ISSN:03603199
DOI:10.1016/j.ijhydene.2014.03.145