In　this　paper,　an　experimental　study　on　the　reaction　kinetics　of　the　CO2　splitting　by　ceria　was　operated　using　sheet-　ceria　materials.　Comparing　the　experimental　results　with　different　gas-　solid　models,　the　homogeneous　F1.5　model　was　selected　as　the　best　model　that　could　describe　the　CO2　splitting　by　ceria　at　high　temperature.　The　model　selection　method　was　validated　using　the　Hancock　and　Sharp　model-free　method,　and　finally　the　reaction　kinetic　constants　of　the　reaction　process　were　obtained,　providing　guidance　for　the　utilization　of　ceria　in　the　solar　thermochemical　cycle.　©　2022,　Solar　Energy　Periodical　Office　Co.,　Ltd.　All　right　reserved.