1 ​wt% Ru/5 ​wt% Nb₂O₅/CeO₂ (RuNbCe) catalyst was synthesized via the incipient wetness impregnation method, and measured for the catalytic oxidation of dichloromethane (DCM). The physicochemical properties of catalysts were determined used various characterization techniques. Compared with 1 ​wt% Ru/CeO₂, 5 ​wt% Nb₂O₅/CeO₂, CeO₂, 1 ​wt% Ru/xNb₂O₅/CeO₂ (x ​= ​1 ​wt%, 2 ​wt%, and 3 ​wt%) and 1 ​wt% Ru/yMO_n/CeO₂ (M ​= ​Co, Cr, Fe, Mg, Cu; y ​= ​5 ​wt%), the addition of 5 ​wt% Nb₂O₅ obviously improved the catalytic performance of 1 ​wt% Ru/CeO₂, with the T_90% and apparent activation energy (E_a) being 287 ^oC and 43.5 ​kJ/mol, respectively, and less formation of polychlorinated byproducts at space velocity (SV) ​= ​15,000 ​mL ​g^‒1 ​h^‒1. The RuNbCe catalyst showed good thermal and hydrothermal stability, as well as HCl-resistance performance. We deduced that the higher oxidation performance of the RuNbCe catalyst may be attributed to the suitable acidic sites, good redox capacity, high surface adsorbed oxygen species concentration, and the strong interaction among Ru, Nb₂O₅ and CeO₂. The RuNbCe catalyst has the potential to be applied for the elimination of chlorinated volatile organic compounds (CVOCs).

通过初湿浸渍法合成了1 wt% Ru/5 wt% Nb ₂ O ₅ /CeO _{2 (RuNbCe) 催化剂，并测量了二氯甲烷 (DCM) 的催化氧化性能。}使用各种表征技术测定催化剂的物理化学性质。与 1 ​wt% Ru/CeO ₂、5 ​wt% Nb ₂ O ₅ /CeO ₂、CeO ₂、1 ​wt% Ru/ x Nb ₂ O ₅ /CeO ₂ ( x  ​= ​1 ​wt%, 2 wt% 和 3 wt%) 和 1 wt% Ru/ yM O _n /CeO ₂ ( M  = Co, Cr, Fe, Mg, Cu; y  = 5 wt%)，添加 5 wt% Nb ₂ O _{5明显提高了 1 wt% Ru/CeO 2}的催化性能，T _90%和表观活化能 ( E _a ) 分别为 287 ^o C 和 43.5 kJ/mol ，并且在空速 (SV)​= ​15,000 ​mL ​g ⁻¹  ​h ⁻¹时多氯副产物的形成较少。RuNbCe催化剂表现出良好的热稳定性和水热稳定性以及耐HCl性能。我们推断RuNbCe催化剂较高的氧化性能可能归因于合适的酸性位点、良好的氧化还原能力、高的表面吸附氧浓度以及Ru、Nb 2 O 5 和CeO ₂之间_的强_相互作用。RuNbCe催化剂有潜力应用于消除氯化挥发性有机化合物（CVOC）。