TY - JOUR
T1 - Electroreduction of CO2 to CO Paired with 1,2-Propanediol Oxidation to Lactic Acid
T2 - Toward an Economically Feasible System
AU - Pérez-Gallent, Elena
AU - Turk, Susan
AU - Latsuzbaia, Roman
AU - Anastasopol, Anca
AU - Sastre-Calabuig, Francesc
AU - Garcia, Amanda Cristina
AU - Giling, Erwin
AU - Goetheer, Earl
N1 - Accepted Author Manuscript
PY - 2019
Y1 - 2019
N2 -
In industrial electrochemical processes it is of paramount importance to achieve efficient, selective processes to produce valuable chemicals while minimizing the energy input. Although the electrochemical reduction of CO
2
has received a lot of attention in the past decades, an economically feasible process has not yet been developed. Typically, the electrochemical reduction of CO
2
is paired to water oxidation, forming oxygen, but an alternative strategy would be coupling the CO
2
reduction reaction to an oxidation in which a higher-value product is co-produced, significantly improving the economic feasibility for CO
2
reduction as a whole. Importantly, both reactions need to be chosen wisely to ensure their compatibility and to minimize the voltage requirements for the redox system. In this study, as an example of this approach, we demonstrate such a match: the electroreduction of CO
2
to CO, paired with the electrooxidation of 1,2-propanediol to lactic acid. Combining these reactions decreases energy consumption by 35%, increases product value of the system, and results in combined faradaic efficiencies of up to 160% when compared to the CO
2
reduction reaction in which oxygen is formed in the anode.
AB -
In industrial electrochemical processes it is of paramount importance to achieve efficient, selective processes to produce valuable chemicals while minimizing the energy input. Although the electrochemical reduction of CO
2
has received a lot of attention in the past decades, an economically feasible process has not yet been developed. Typically, the electrochemical reduction of CO
2
is paired to water oxidation, forming oxygen, but an alternative strategy would be coupling the CO
2
reduction reaction to an oxidation in which a higher-value product is co-produced, significantly improving the economic feasibility for CO
2
reduction as a whole. Importantly, both reactions need to be chosen wisely to ensure their compatibility and to minimize the voltage requirements for the redox system. In this study, as an example of this approach, we demonstrate such a match: the electroreduction of CO
2
to CO, paired with the electrooxidation of 1,2-propanediol to lactic acid. Combining these reactions decreases energy consumption by 35%, increases product value of the system, and results in combined faradaic efficiencies of up to 160% when compared to the CO
2
reduction reaction in which oxygen is formed in the anode.
UR - http://www.scopus.com/inward/record.url?scp=85065758864&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.8b06340
DO - 10.1021/acs.iecr.8b06340
M3 - Article
AN - SCOPUS:85065758864
SN - 0888-5885
VL - 58
SP - 6195
EP - 6202
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 16
ER -