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Splitting of H2O and CO2 via metal oxid redox reactions
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Schematic of the 2-step thermo-chemical cycle for splitting H2O and CO2 via metal oxide redox reactions. Here, M denotes a metal, and MO the corresponding metal oxide. In the first, endothermic, solar step, MOox is thermally dissociated into the metal or lower-valence metal oxide MOred and oxygen. Concentrated solar radiation is the energy source for the required high-temperature process heat. In the second step, MOred reacts with H2O and/or CO2 to produce H2 and/or CO. The resulting metal oxide is then recycled back to the first step. The combination of H2 and CO constitutes synthesis gas (syngas), which is the precursor to renewable liquid hydrocarbon fuels.
International Workshop on Reaction Kinetics of Solar Thermochemical Redox Cycles
Solar Transformation of Substances
Propellants and Fuels
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