The following table is obtained from this reference (https://doi.org/10.1016/j.seppur.2022.121604), which summarised a few reports regarding the performance of ICCU-RWGS, in relation to the conversion of CO2 and selectivity to CO.
It is noted that the conversion of CO2 is related to process conditions. For example, the concentration of H2 had a significant influence on CO2 conversion in ICCU-RWGS. Interesting, pure CaO can enable almost 80% CO2 conversion with around 4 mmol/g CO production in ICCU-RWGS (https://doi.org/10.1016/j.ccst.2021.100001). This is not included in the above table.