Fig. 7: Efficient gas purification by thermochemical redox cycling of MMOs. | Nature Communications

Fig. 7: Efficient gas purification by thermochemical redox cycling of MMOs.

From: Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage

Fig. 7: Efficient gas purification by thermochemical redox cycling of MMOs.The alternative text for this image may have been generated using AI.

a Schematic diagram of the main redox-reactions of MMO upon reduction in diluted CO and CH4, and oxidation under air, b–d Gas concentration profiles during redox-experiments with reduction in 2.0 vol% CO at (b) 400 °C and (c) 800 °C; and d reduction in CH4 at 800 °C. e Conversion of oxygen sorbents versus number of redox cycles. f Schematic diagram of CLCP for argon recovery from silicon manufacturing processes, consisting of two stages (1) removal of contaminated gases by copper-based oxygen storage materials and (2) removal of CO2 and H2O with pressure swing adsorption.

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