Fe_xZr_1-x-S mixed oxide catalysts were prepared by precipitation of FeSO₄ and ZrOCl₂, and used in catalytic oxidation of dichloromethane (DCM). Analyses by a series of characterization technologies reveal that Fe-O-Zr solid solution with tetragonal ZrO₂ or α-Fe₂O₃ structure can be formed, dependent on Fe/Fe + Zr ratio. Residual SO₄²⁻ species obtained from FeSO₄ precursor exist in a form of bridged bidentate complex with Zr⁴⁺ or Fe³⁺ ion, which increases acidity significantly. Fe_xZr_1-x-S catalysts with Fe/Fe + Zr of 0.2–0.5 possess high contents of both SO₄²⁻ and surface oxygen, and are highly active in catalytic combustion of DCM with T₉₀ below 320 °C and TOFs at 200 °C of 0.98–1.89 μmol/(m² min). Another test shows that the activity for the other CVOVs oxidation over Fe_0.5Zr_0.5-S is 1,2-dichloroethane > dichloromethane > trichloroethylene > 1,2-di chlorobenzene. Because the substitution of Cl species for surface oxygen is retarded, high stable activity maintains within reaction temperatures for at least 80 h. In situ FT-IR indicates that DCM is adsorbed and activated mainly through the formation of chloromethyl sulfate, which is oxidized quickly into formate ion. The synergism between SO₄^2- complex anchoring on Zr-O-Fe solid solution and surface oxygen obtained from Fe₂O₃ cluster or nano-particles promotes the oxidation of formate.

通过沉淀FeSO ₄和ZrOCl ₂制备Fe _x Zr _1-x -S_复合氧化物催化剂，并将其用于二氯甲烷（DCM）的催化氧化。通过一系列的表征技术的分析表明，与四方ZrO铁-O-Zr的固溶体₂或的α-Fe ₂ ö ₃可以形成结构，依赖于铁/铁+ Zr比。从FeSO ₄前体获得的残留SO ₄ ^2-物种以与Zr ⁴⁺或Fe ³⁺离子桥接的双齿络合物的形式存在，从而显着提高了酸度。铁_x锆_1-xFe / Fe + Zr为0.2-0.5的-S催化剂同时具有较高的SO ₄ ^2-和表面氧含量，并且在T ₉₀低于320°C的DCM和200°C的TOF为0.98的DCM催化燃烧中具有很高的活性。–1.89μmol/（m ² 分钟）。另一个测试表明，在Fe _0.5 Zr _0.5 -S上其他CVOV的氧化活性为1,2-二氯乙烷>二氯甲烷>三氯乙烯> 1,2-二氯苯。因为阻止了Cl物质对表面氧的替代，所以在反应温度下至少80小时内都可以保持较高的稳定活性。原位FT-IR表明，DCM主要通过氯甲基硫酸盐的形成而被吸附和活化，该氯甲基硫酸盐被快速氧化成甲酸根离子。固定在Zr-O-Fe固溶体上的SO ₄ ^2-络合物与从Fe ₂ O ₃团簇或纳米颗粒获得的表面氧之间的协同作用促进了甲酸盐的氧化。