The effect of lattice geometric parameters of perovskite oxides on thermochemical redox CO₂-splitting process is highlighted. Experimentally-derived amounts of O₂ and CO evolved were found to correlate with critical radius per unit cell volume (R_c.u) and specific free volume (V_F.S), respectively, in a series of phase pure A-site substituted perovskites. These findings demonstrate the possibility of designing new oxygen carrier materials based on geometric parameters while predicting their CO₂-splitting activity during two-step cycles.

中文翻译：

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A位取代锰钙钛矿中氧迁移率与CO2热化学分解效率的相关性

突出显示了钙钛矿氧化物的晶格几何参数对热化学氧化还原 CO ₂裂解过程的影响。在一系列相纯 A 位取代的钙钛矿中，实验得出的 O ₂和 CO 的_释放量分别与每单位晶胞体积的临界半径 ( R _c.u ) 和比自由体积 ( V _F.S ) 相关。这些发现证明了基于几何参数设计新的载氧体材料的可能性，同时预测它们在两步循环期间的 CO ₂分解活性。