V/TiO₂–SiO₂–MoO₃ (TSM) catalysts exhibit enhanced redox capabilities, but the role of each species in the mixed oxide support is not well understood. Herein, the physicochemical characteristics of molybdenum oxide in TSM were investigated using X-ray diffraction, X-ray photoelectron spectroscopy, and X-ray absorption fine structure spectroscopy, and the performance of V/TSM catalysts for the oxidative decomposition of o-chlorotoluene was examined. The V/TSM catalysts exhibited superior performances in this decomposition reaction at low temperatures. The molybdenum species were highly dispersed as Mo⁶⁺, replacing Ti⁴⁺ in the anatase TiO₂ framework and forming a solid solution. The redox capability of the vanadium species in the catalyst was enhanced by electron transfer from the TSM support to vanadium, likely due to the coexistence of Mo⁶⁺ and Ti⁴⁺ in the TSM solid solution, which has a unique structure. These results are expected to contribute to enhancing the abatement of dioxins at low temperatures.

V / TiO ₂ -SiO ₂ -MoO ₃（TSM）催化剂具有增强的氧化还原能力，但每种氧化物在混合氧化物载体中的作用尚不十分清楚。本文利用X射线衍射，X射线光电子能谱和X射线吸收精细结构能谱研究了TSM中氧化钼的理化特性，V / TSM催化剂对邻氯甲苯的氧化分解性能为检查。V / TSM催化剂在低温下的这种分解反应中表现出优异的性能。钼物种以Mo ^6+的形式高度分散，取代了锐钛型TiO ₂中的Ti ⁴⁺。框架并形成坚实的解决方案。电子从TSM载体转移到钒中可以增强催化剂中钒物质的氧化还原能力，这可能是由于TSM固溶体中Mo ⁶⁺和Ti ⁴⁺的共存具有独特的结构。预期这些结果将有助于增强低温下二恶英的消除。