A Tb₂O3/TbO₂ thermochemical CO₂ splitting cycle was thermodynamically scrutinized in this study. Equilibrium and efficiency analysis are the two major sections of this thermodynamic investigation. As a first step of the thermodynamic analysis, the temperatures required for the thermal reduction (TR) of Tb₂O₃ and the re‐oxidation of the TbO₂ via CO₂ splitting (CS) reaction were identified. The equilibrium analysis indicates that the temperature in the range of 2234–2530 K was required for the increase in the percentage TR of Tb₂O₃ from 5% to 100%. The efficiency analysis was conducted by following a process flow arrangement, which includes a solar reactor, a CS reactor, a CO₂ heater, multiple coolers, and a fuel cell. The obtained results indicate that the ${\eta }_{\mathrm{solar}-\mathrm{to}-\mathrm{fuel}-\mathrm{Tb}-\mathrm{CS}}$ increased from 3.4% to 5.6% when the %TR‐Tb upsurged from 5% to 25%. A further rise in the %TR‐Tb from 25% to 100%, however, resulted in a decrease in the ${\eta }_{\mathrm{solar}-\mathrm{to}-\mathrm{fuel}-\mathrm{Tb}-\mathrm{CS}}$ from 5.6% to 3.5%. By employing 100% heat recuperation, the maximum ${\eta }_{\mathrm{solar}-\mathrm{to}-\mathrm{fuel}-\mathrm{HR}-\mathrm{Tb}-\mathrm{CS}}$ = 9.6% attained at a %TR‐Tb equal to 20% ( $T_H$ = 2296 K). © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

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基于氧化的太阳能热化学CO2分解循环：热力学研究

在这项研究中，对Tb ₂ O3 / TbO ₂热化学CO ₂分解循环进行了热力学研究。平衡和效率分析是该热力学研究的两个主要部分。作为热力学分析的第一步，确定了Tb ₂ O ₃的热还原（TR）以及通过CO ₂裂解（CS）反应对TbO ₂进行再氧化所需的温度。平衡分析表明，Tb ₂ O _3的TR百分比增加需要温度在2234-2530 K范围内从5％到100％。通过遵循工艺流程安排进行效率分析，该流程安排包括太阳能反应器，CS反应器，CO ₂加热器，多个冷却器和燃料电池。获得的结果表明${\eta }_{\mathrm{太阳能的}-\mathrm{至}-\mathrm{汽油}-\mathrm{b}-\mathrm{CS}}$当％TR-Tb从5％增加到25％时，从3.4％增加到5.6％。％TR-Tb从25％进一步上升到100％，导致${\eta }_{\mathrm{太阳能的}-\mathrm{至}-\mathrm{汽油}-\mathrm{b}-\mathrm{CS}}$从5.6％增加到3.5％通过采用100％的热量回收，最大${\eta }_{\mathrm{太阳能的}-\mathrm{至}-\mathrm{汽油}-\mathrm{人力资源}-\mathrm{b}-\mathrm{CS}}$ =在％TR-Tb等于20％时达到9.6％（ ${Ť}_H$= 2296 K）。©2020年化学工业协会和John Wiley＆Sons，Ltd.