Raw data of operating parameters of the reactor system and gas compositions measurement
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<br>The application of chemical looping for reverse water gas-shift provides an efficient way for the conversion of CO<sub>2 </sub>to CO, enabling the transformation of captured CO<sub>2</sub> into value-added products. For example, by using the produced CO along with renewable H<sub>2</sub> to synthesise liquid fuels. In this study, we applied the concept of a chemical ‘memory’ reactor, employing a perovskite-based oxygen carrier (La<sub>0.6</sub>Sr<sub>0.4</sub>FeO<sub>3-</sub><sub><em>δ</em></sub>, LSF) in a counter-current packed-bed reactor for CO<sub>2</sub> splitting. This approach overcomes the chemical equilibrium limitation and could produce high-purity CO.Our work experimentally investigated the performance of LSF pellets as oxygen carriers in a large lab-scale packed-bed reactor with gas-switching technology for chemical looping CO<sub>2</sub> splitting. We evaluated the effects of changes in feed time, bed temperatures, and flow rates on CO<sub>2</sub> to CO conversion. Optimal conditions gave over 90% CO<sub>2</sub> to CO conversion via counter-current flow, compared to 45% for conventional co-current flow in the same reactor. Higher bed temperatures enhanced the CO<sub>2</sub> to CO conversion.<br>
