The modified ZnGa₂O₄ microspheres were prepared by the conventional hydrothermal method and used to catalyze methane combustion reaction. Because Co²⁺ and Zn²⁺ have similar ion radii, so it seems that the Zn²⁺ at the tetrahedral (T_d) position of ZnGa₂O₄ was partially replaced by Co²⁺ to adjust the oxygen distribution, and finally the Zn_1-xCo_xGa₂O₄ (x = 0.1, 0.3) microspheres catalysts was obtained. X-ray photoelectron spectroscopy (XPS) analysis exhibited that Co³⁺ were present in the Zn_1-xCo_xGa₂O₄ (0.1, 0.3) samples, and interstitial oxygen were formed to maintain electrical neutrality. Oxygen temperature programmed desorption (O₂-TPD) profiles showed that there was only one oxygen species desorption from ZnGa₂O₄ sample, while the Zn_1-xCo_xGa₂O₄ (0.1, 0.3) samples had two oxygen desorption peaks, that is the first one is surface adsorbed oxygen, the second is lattice oxygen. The catalytic methane combustion performance of the samples indicated that the partial substitution of Co²⁺ for Zn²⁺ in ZnGa₂O₄ can effectively improve its activity.

采用常规水热法制备了改性ZnGa ₂ O ₄微球，用于催化甲烷燃烧反应。因为Co ²⁺和Zn ²⁺具有相似的离子半径，所以看起来ZnGa ₂ O ₄四面体（T _d）位置的Zn ²⁺被Co ²⁺部分取代以调整氧分布，最后得到Zn _1-x Co _x Ga ₂ O ₄ (x = 0.1, 0.3)微球催化剂。X 射线光电子能谱 (XPS) 分析表明 Co ³⁺Zn _1-x Co _x Ga ₂ O ₄ (0.1, 0.3) 样品中存在氧，并形成间隙氧以保持电中性。氧程序升温脱附 (O ₂ -TPD) 曲线表明 ZnGa ₂ O ₄样品只有一种氧物质脱附，而 Zn _1-x Co _x Ga ₂ O ₄ (0.1, 0.3) 样品有两个氧脱附峰，即第一个是表面吸附氧，第二个是晶格氧。样品的催化甲烷燃烧性能表明，Co ²⁺部分取代了ZnZnGa ₂ O _{4 中的}²⁺可有效提高其活性。