Coke oven gas (COG) is a major byproduct generated during the coking process, containing complex gas components such asCO, H2, CH4, and CO2. Chemical looping combustion is a technology that efficiently converts COG and captures high-purity carbon dioxide. A series of x% CuO/ Ce-Zr-O (x= 30, 50, 70, 90) oxygen carriers were prepared using the sol-gel method for the study of chemical looping combustion characteristics of COG. XRD analysis indicates that the phases of x% CuO/ Ce-Zr-O oxygen carriers consist of asolid solution of CuO and Ce0.67Zr0.33O2. Due to the incorporation of Zr4+ ions into the CeO2 lattice, a distinct oxygen vacancy Raman characteristic peak appears at 617 cm-1. H2-TPR, CO-TPR, CH4-TPR, and COG-TPR results suggest that the addition of Ce-Zr-O solidsolution enhances the low-temperature oxygen release capacity of copper species. Under conditions of 800 ℃ , the CO2 capture rate of theCuO sample is 34%, which increases to 100% with the addition of 10% Ce0.67Zr0.33O2. After 50 cycles of oxidation-reduction, the performance of the CuO sample significantly deteriorates, while the reactivity and phase structure of the 90CuO/ Ce-Zr-O sample remainlargely unchanges. This indicates that the interaction between CuO and Ce0.67Zr0.33O2 enhances the oxygen release capacity and cycling stability of copper species. This research contributes to expanding the utilization pathways of COG.