利用片状氧化铈材料对于氧化铈高温分解CO2过程的反应动力学过程进行实验研究。将实验结果与不同气固模型比较,得出均相F1.5模型是能描述CO2在高温下被氧化铈分解的最佳模型。并利用Hancock and Sharp无模型方法进行模型选择验证,最终得到该反应过程的反应动力学表达式和常数,为该材料在太阳能热化学循环的利用提供了指导。
Abstract
In this paper, an experimental study on the reaction kinetics of the CO2 splitting by ceria was operated using sheet-ceria materials. Comparing the experimental results with different gas-solid models, the homogeneous F1.5 model was selected as the best model that could describe the CO2 splitting by ceria at high temperature. The model selection method was validated using the Hancock and Sharp model-free method, and finally the reaction kinetic constants of the reaction process were obtained, providing guidance for the utilization of ceria in the solar thermochemical cycle.
关键词
太阳能 /
二氧化碳 /
反应动力学 /
氧化铈 /
高温分解
Key words
solar energy /
carbon dioxide /
reaction kinetics /
high temperature spliting /
ceria
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基金
国家自然科学基金（51888103; 51925602）
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