High activity at low temperature and good stability at high temperature, the main characteristics of excellent catalysts, are incompatible for general methane combustion catalyst. This study investigated the effect of Cr2O3 on catalytic performance of MXOY(M=Cu, Ni, Ce)/Al2O3-ZrO2 catalysts for methane combustion and evaluated the catalytic activity to obtain methane combustion catalysts with high activity at low temperature and good stability at high temperature. Finally,

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... (BET), scanning electron microscopy (SEM), and X-ray diffraction (XRD) were used. Results demonstrate that CuO/Cr2O3-ZrO2-Al2O3 catalyst has the highest activity. However, compared with CuO/ZrO2-Al2O3, the modification effect of Cr2O3 is not evident. When M = Ni, the effect of Cr2O3 is the most evident; its T10% is 357 ℃ and △T50% is 41 ℃. This finding indicates that NiO/Cr2O3-ZrO2-Al2O3 catalyst has high catalytic activity and good thermal stability. After aging at 1000 ℃, the specific surface area of NiO/Cr2O3-ZrO2-Al2O3 catalyst is up to 62.33m 2 .g -1 . SEM results showed no evident agglomeration phenomenon. After multiple activity evaluations, the catalyst has good catalytic activity and thermal stability; its T10% is approximately 400 ℃ and △T50% is approximately 10 ℃. This study provides a reference for finding methane combustion catalysts with high activity at low temperature and excellent thermal stability at high temperature.