Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.126
Publication date: 18th July 2023
The synthetic methane from hydrogen derived from renewable energy and captured CO2, so-called e-methane, is one of the promising ways to decarbonize gaseous fuel necessary for realizing carbon neutrality. The e-methane can utilize existing city gas infrastructure, and is particularly effective for high-temperature heat demand of 200°C or higher, which is difficult to replace with electricity. To meet the above-mentioned requirement, Tokyo Gas has started developing electrochemical CO2 reduction technology using a polymer electrolyte membrane to synthesize e-methane with Osaka University under the “Green Innovation Fund project” in Japan.
Since the CO2 electrochemical reduction yields chemical species such as CO, ethylene, formic acid, and hydrogen in addition to methane, one of the most important technical challenges is improving methane selectivity.
To solve this challenge and optimize the cell structure, the copper-based catalysts, known to have a potential for methane synthesis, have been designed and evaluated. The progress of catalyst and cell development for improved methane selectivity will be discussed.
This presentation is based on results obtained from a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO).
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