研究目的
To review the issues involved in the two-step reaction principle of metal-oxide thermochemical cycles, discuss the factors that must be considered in the design of metal-oxide optimized for thermochemical cycles, summarize the major developments in the area of metal-oxide thermochemical cycles for solar-driven fuels production, and discourse pathways for developing improved materials.
研究成果
The chapter reviewed the reaction principles, design considerations, and material research progress in two-step water and carbon dioxide splitting processes involving redox metal oxides. New concepts like isothermal thermochemical cycles, chemical-looping cycles, and photo-thermochemical cycles were proposed to overcome the drawbacks of nonisothermal thermochemical cycles. The development of advanced metal-oxide thermochemical cycles for solar-driven fuel production is anticipated to benefit from these insights.
研究不足
The high reduction temperatures required for some metal oxide redox pairs create engineering challenges, and there are issues with material sintering and deactivation at high temperatures. Additionally, the need for rapid quenching of volatile products and the energy penalties associated with inert gas recycling are significant limitations.
