A series of Cr_xFe_2-xO₃ mixed oxides were tested for catalytic combustion of dichloromethane. The best performance was obtained on a Cr_0.8Fe_1.2O₃ catalyst (with a reaction rate of 3.11 mmol g⁻¹ h⁻¹ at 250 °C), which is higher than most of the results in literature. The reaction behavior was synergistically governed by the reducibility and surface acidity of the catalyst, which could be tuned by the compositions of Cr and Fe species in the mixed oxide. As a result, the Cr_0.8Fe_1.2O₃ catalyst with an optimal combination of reducibility and surface acidity accounted for the best performance.

中文翻译：

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用于二氯甲烷催化燃烧的高性能Cr _x Fe _2-x O ₃混合氧化物

测试了一系列Cr _x Fe _2-x O ₃混合氧化物对二氯甲烷的催化燃烧。在Cr _0.8 Fe _1.2 O ₃催化剂上获得最佳性能（在250°C下的反应速率为3.11 mmol g ^-1  h ^-1），高于大多数文献结果。反应行为由催化剂的还原性和表面酸度协同控制，这可以通过混合氧化物中Cr和Fe种类的组成来调节。结果，Cr _0.8 Fe _1.2 O ₃ 具有最佳还原性和表面酸度组合的催化剂具有最佳性能。