Imperial College London
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Prof. J. P. Martin Trusler

Faculty of Engineering, Department of Chemical Engineering

Professor of Thermophysics
 
 
 
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Contact

 

+44 (0)20 7594 5592m.trusler Website

 
 
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Assistant

 

Miss Jessica Baldock +44 (0)20 7594 5699

 
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Location

 

409ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ramdin:2021:10.1021/acs.iecr.1c03592,
author = {Ramdin, M and De, Mot B and Morrison, ART and Breugelmans, T and van, den Broeke LJP and Trusler, JPM and Kortlever, R and de, Jong W and Moultos, OA and Xiao, P and Webley, PA and Vlugt, TJH},
doi = {10.1021/acs.iecr.1c03592},
journal = {Industrial and Engineering Chemistry Research},
pages = {17862--17880},
title = {Electroreduction of CO2/CO to C2 products: process modeling, downstream separation, system integration, and economic analysis.},
url = {http://dx.doi.org/10.1021/acs.iecr.1c03592},
volume = {60},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Direct electrochemical reduction of CO2 to C2 products such as ethylene is more efficient in alkaline media, but it suffers from parasitic loss of reactants due to (bi)carbonate formation. A two-step process where the CO2 is first electrochemically reduced to CO and subsequently converted to desired C2 products has the potential to overcome the limitations posed by direct CO2 electroreduction. In this study, we investigated the technical and economic feasibility of the direct and indirect CO2 conversion routes to C2 products. For the indirect route, CO2 to CO conversion in a high temperature solid oxide electrolysis cell (SOEC) or a low temperature electrolyzer has been considered. The product distribution, conversion, selectivities, current densities, and cell potentials are different for both CO2 conversion routes, which affects the downstream processing and the economics. A detailed process design and techno-economic analysis of both CO2 conversion pathways are presented, which includes CO2 capture, CO2 (and CO) conversion, CO2 (and CO) recycling, and product separation. Our economic analysis shows that both conversion routes are not profitable under the base case scenario, but the economics can be improved significantly by reducing the cell voltage, the capital cost of the electrolyzers, and the electricity price. For both routes, a cell voltage of 2.5 V, a capital cost of $10,000/m2, and an electricity price of <$20/MWh will yield a positive net present value and payback times of less than 15 years. Overall, the high temperature (SOEC-based) two-step conversion process has a greater potential for scale-up than the direct electrochemical conversion route. Strategies for integrating the electrochemical CO2/CO conversion process into the existing gas and oil infrastructure are outlined. Current barriers for industrialization of CO2 electrolyzers and possible solutions are discussed as well.
AU  - Ramdin,M
AU  - De,Mot B
AU  - Morrison,ART
AU  - Breugelmans,T
AU  - van,den Broeke LJP
AU  - Trusler,JPM
AU  - Kortlever,R
AU  - de,Jong W
AU  - Moultos,OA
AU  - Xiao,P
AU  - Webley,PA
AU  - Vlugt,TJH
DO  - 10.1021/acs.iecr.1c03592
EP  - 17880
PY  - 2021///
SN  - 0888-5885
SP  - 17862
TI  - Electroreduction of CO2/CO to C2 products: process modeling, downstream separation, system integration, and economic analysis.
T2  - Industrial and Engineering Chemistry Research
UR  - http://dx.doi.org/10.1021/acs.iecr.1c03592
UR  - https://www.ncbi.nlm.nih.gov/pubmed/34937989
UR  - https://pubs.acs.org/doi/10.1021/acs.iecr.1c03592
UR  - http://hdl.handle.net/10044/1/95003
VL  - 60
ER  -
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