Electrochemical generation of syngas from water and carbon dioxide at industrially important rates
| Autor: | Kaplun Marina M, Zengcai Liu, Robert Kutz, Qingmei Chen, Dale Lutz, Hongzhou Yang, Krzysztof A. Lewinski, Sean M. Luopa, Richard I. Masel |
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| Rok vydání: | 2016 |
| Předmět: |
Electrolysis
Waste management Electrolysis of water business.industry Chemistry Process Chemistry and Technology Inorganic chemistry High-pressure electrolysis Mixing (process engineering) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences law.invention Renewable energy chemistry.chemical_compound law Carbon dioxide Chemical Engineering (miscellaneous) 0210 nano-technology business Waste Management and Disposal Syngas |
| Zdroj: | Journal of CO2 Utilization. 15:50-56 |
| ISSN: | 2212-9820 |
| DOI: | 10.1016/j.jcou.2016.04.011 |
| Popis: | The electrochemical production of syngas would enable production of chemicals and transportation fuels from carbon dioxide, water and renewable energy, but a suitable process at the moment does not exist. In this paper we consider two options for syngas production: (i) CO2 electrolysis to produce CO, water electrolysis to produce H2 and then mixing the CO and H2 to yield syngas; and (ii) the simultaneous co-electrolysis of CO2 and H2O in a single electrolyzer. The results show that both processes can produce syngas at industrially important rates. In this paper we demonstrate CO2 electrolysis at 100 mA/cm2, i.e., about 20 turnovers/s, and water electrolysis at 8 A/cm2 at 2.0 V/cell, with about 1,600 turnovers/s. Both systems are stable for a thousand hours or more, i.e., millions of turnovers. We also demonstrate simultaneous CO and H2 production in a single electrolyzer. These results demonstrate that syngas can be produced at industrially important rates via electrolysis. |
| Databáze: | OpenAIRE |
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