Methane synthesis from CO2 and H2O with electricity using H-permeable membrane electrochemical cells with Ru catalyst and phosphate electrolyte
Literature Information
Publication Date
2021-01-22
DOI
10.1039/D0SE01896A
Impact Factor
6.367
Authors
Jun Kubota, Takaya Okumura
View Original
Abstract
The synthesis of methane from CO2 and H2O using a Ru catalyst and water electrolyzer was examined between 210 and 270 °C. A Ru/TiO2 catalyst, Pd–Ag membrane, CsH2PO4/SiP2O7 electrolyte, and Pt anode were combined. At 10 mA cm−2, 0.087 cmSTP3 min−1 CO2 flow rate, and 270 °C, 93.3% of the current was consumed for methanation and 59% CO2 conversion was attained. The formation of H2 and CO as byproducts accounted for 1.7% and 0.33% of the current, respectively, under these conditions. The potential of the proposed method as a power-to-gas technology is discussed.
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