Towards chemical equilibrium in thermochemical water splitting. Part 1: Thermal reduction
| Autor: | Ivan Ermanoski, Alberto de la Calle, Ellen B. Stechel |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Air separation
Materials science Renewable Energy Sustainability and the Environment Reaction step Energy Engineering and Power Technology Thermodynamics Condensed Matter Physics Energy storage Reaction coordinate Fuel Technology Thermal Water splitting Physics::Chemical Physics Chemical equilibrium Thermochemical cycle |
| Zdroj: | International Journal of Hydrogen Energy. 47:10474-10482 |
| ISSN: | 0360-3199 |
| Popis: | The efficiency of many processes strongly depends on their thermodynamic reversibility, i.e., proximity to equilibrium throughout the process. In thermochemical cycles for water and/or carbon dioxide splitting, thermochemical air separation, and thermochemical energy storage, operating near equilibrium means that the oxygen chemical potential of the solid and gas phases must not differ significantly. We show that approaching this ideal is possible in thermal reduction only if the reaction step occurs at a specific, reaction coordinate- and material-dependent temperature. The resulting thermal reduction temperature profile also depends on the ratio of gas and solid flows. |
| Databáze: | OpenAIRE |
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