The combustion of fuel in oxygen rather than in air is one route to allow for the large-scale capture and storage of CO₂. An alternative to the conventional air separation to produce oxygen, which imposes a significant energy penalty, is chemical looping air separation (CLAS). CLAS exploits the cyclic oxidation and reduction of solid oxygen materials. Here, the equilibrium partial pressure curves and the redox behavior for two potential materials (the perovskites SrFeO_3-δ and SrMn_0.1Fe_0.9O_3-δ) are derived from experiments. For the redox tests, a low dead volume micro reactor, operated as a differential packed bed, was used. This system enabled measuring the process of reduction at the 10 ms scale. Experiments were carried out between 798 and 898 K, with pO₂ varied between 0 and 0.21 atm. All perovskites showed good performance during experiments lasting 1000 cycles. Despite similar chemical composition, the measured oxygen chemical potential and reduction kinetics differed between the tested materials significantly.

在氧气而不是空气中燃烧燃料是允许大规模捕获和存储CO _2的一种途径。化学循环空气分离（CLAS）是一种替代传统的空气分离生产氧气的方法，这种方法会产生很大的能耗损失。CLAS利用了固体氧材料的循环氧化和还原。此处，两种潜在材料（钙钛矿SrFeO _{3- δ}和SrMn _0.1 Fe _0.9 O _{3- δ}的平衡分压曲线和氧化还原行为））来自实验。对于氧化还原测试，使用低差体积微反应器，该反应器用作差速填充床。该系统能够在10 ms的范围内测量还原过程。实验在798至898 K之间进行，p O ₂在0至0.21 atm之间变化。在持续1000个循环的实验过程中，所有钙钛矿均显示出良好的性能。尽管化学成分相似，但被测材料之间测得的氧化学势和还原动力学仍存在显着差异。