Three different MFI type zeolites Silicalite-1, ZSM-5 and TS-1 as supports were synthesized by steam-assisted crystallization method. Then, the as-synthesized zeolites were used to prepare Co₃O₄ supported MFI type zeolite catalysts by wet impregnation. The as-prepared Co₃O₄ supported MFI type zeolite catalysts possessed high specific surface area, abundant pore structure and surface acidity. Finally, the as-prepared catalysts were used for dichloromethane (DCM) catalytic combustion and the results showed that Co₃O₄ supported MFI type zeolite catalysts had better performance than pure Co₃O₄. The synergistic catalytic effects between MFI type zeolite and Co₃O₄ effectively reduced the formation of polychlorinated by-products and suppressed the deactivation of catalyst during the catalytic combustion of DCM. And Co₃O₄/ZSM-5 catalyst exhibited the best performance due to its proper Brønsted acid sites amount and the T₉₀ (the reaction temperature at which the dichloromethane conversion reached 90%) was 370 °C at 1,000 ppm DCM, 10% O₂/N₂ and the gas hourly space velocity of 30,000 mL/(g∙h).

通过蒸汽辅助结晶法合成了三种不同的MFI型沸石Silicalite-1，ZSM-5和TS-1作为载体。然后，将所合成的沸石用于通过湿浸渍制备Co ₃ O ₄负载的MFI型沸石催化剂。制备的Co ₃ O ₄负载MFI型沸石催化剂具有较高的比表面积，丰富的孔结构和表面酸度。最后，将所制备的催化剂用于二氯甲烷（DCM）催化燃烧，结果表明，Co ₃ O ₄负载的MFI型沸石催化剂的性能优于纯Co ₃ O _4。。MFI型沸石与Co ₃ O ₄之间的协同催化作用有效地减少了多氯代副产物的形成，并抑制了DCM催化燃烧过程中催化剂的失活。Co ₃ O ₄ / ZSM-5催化剂由于其适当的布朗斯台德酸位点量和T ₉₀（二氯甲烷转化率达到90％的反应温度）在370 ppm（1,000 ppm DCM，10％DCM）下表现出最佳性能O ₂ / N ₂和气体时空速度为30,000 mL /（g∙h）。