A series of transition metals (Fe, Co, Ni, Cu, Cr and Mn)-doped CeO₂–TiO₂ catalysts were prepared by the sol–gel method and applied for the catalytic removal of 1,2-dichloroethane (DCE) as a model for chlorinated VOCs (CVOCs). The various characterization methods including X-ray diffraction (XRD), N₂ adsorption–desorption, UV-Raman, NH₃ temperature-programmed desorption (NH₃-TPD) and H₂ temperature-programmed reduction (H₂-TPR) were utilized to investigate the physicochemical properties of the catalysts. The results show that doping Fe, Co, Ni or Mn can obviously promote the activity of CeO₂–TiO₂ mixed oxides for DCE degradation, which is related to their improved texture properties, acid sites (especially for strong acidity) and low-temperature reducibility. Particularly, CeTi–Fe doped with moderate Fe exhibits excellent activity for 1,2-dichloroethane (DCE) degradation, giving a T_90% value as low as 250 °C. More importantly, only trace chlorinated byproducts were produced during the low-temperature degradation of various CVOCs (dichloromethane (DCM), trichloroethylene (TCE) and chlorobenzene (CB)) over CeTi–Fe1/9 catalyst with high durability.

采用溶胶-凝胶法制备了一系列过渡金属（Fe、Co、Ni、Cu、Cr和Mn）掺杂的CeO ₂ -TiO ₂催化剂，并应用于1,2-二氯乙烷（DCE）的催化去除。氯化 VOC (CVOC) 模型。采用了多种表征方法，包括 X 射线衍射 (XRD)、N ₂吸附-脱附、UV-Raman、NH ₃ 程序升温脱附 (NH ₃ -TPD) 和 H ₂ 程序升温还原 (H ₂ -TPR)研究催化剂的物理化学性质。结果表明，掺杂Fe、Co、Ni或Mn均能明显促进CeO ₂ -TiO _{2的活性。}用于 DCE 降解的混合氧化物，这与它们改善的织构特性、酸性位点（尤其是强酸性）和低温还原性有关。特别是，掺杂适量 Fe 的 CeTi-Fe 表现出优异的 1,2-二氯乙烷 (DCE) 降解活性，T _90%值低至 250 °C。更重要的是，在具有高耐久性的 CeTi-Fe1/9 催化剂上低温降解各种 CVOC（二氯甲烷（DCM）、三氯乙烯（TCE）和氯苯（CB））过程中仅产生微量的氯化副产物。