Ru-based catalysts have been extensively employed for the catalytic destruction of chlorinated volatile organic compounds (VOCs), but their versatility for other routine VOCs’ destruction has been less explored. Herein, we show that Ru-decorated SnO₂/CeO₂ mixed oxides can sustain H₂O and HCl poisonings and are endowed with extraordinary versatility for a wide range of VOCs’ destruction. Selective adsorption of Ru on the cassiterite SnO₂ and CeO₂ nanorods through a Coulomb force can rationally tune the oxidation and dechlorination centers on decorated catalysts, where the epitaxial growth of RuO_x on top of SnO₂ is endowed with excellent dechlorination ability and that on CeO₂ is functional as an oxidation center; the latter could also activate H₂O to provide sufficient H protons for HCl formation. Our developed Ru/SnO₂/CeO₂ catalyst can steadily destruct mono-chlorobenzene, ortho-dichlorobenzene, trichloroethylene, dichloromethane, epichlorohydrin, N-hexane, ethyl acetate, toluene, and their mixtures at an optimum temperature of 300 °C, and its monolithic form is also functional at this temperature with few dioxins being detected in the off-gas. Our results imply that the Ru-decorated SnO₂/CeO₂ catalyst can meet the demands of regenerative catalytic oxidation for the treatment of a wide range of VOCs from industrial exhausts.

中文翻译：

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SnO2/CeO2 混合氧化物上的 Ru 选择性吸附用于高效破坏多组分挥发性有机化合物：从实验室到实践的可能性

钌基催化剂已广泛用于氯化挥发性有机化合物 (VOC) 的催化破坏，但其在其他常规 VOC 破坏方面的多功能性研究较少。在此，我们展示了 Ru 修饰的 SnO ₂ /CeO ₂混合氧化物可以承受 H ₂ O 和 HCl 中毒，并具有非凡的多功能性，可用于各种 VOC 的破坏。通过库仑力在锡石 SnO ₂和 CeO ₂纳米棒上选择性吸附 Ru 可以合理调节装饰催化剂上的氧化和脱氯中心，其中 RuO _x在 SnO _{2上的外延生长}具有优良的脱氯能力，在CeO ₂上起氧化中心作用；后者还可以激活 H ₂ O 为 HCl 的形成提供足够的 H 质子。我们开发的Ru/SnO ₂ /CeO ₂催化剂可以在300 ℃的最佳温度下稳定地破坏一氯苯、邻二氯苯、三氯乙烯、二氯甲烷、环氧氯丙烷、正己烷、乙酸乙酯、甲苯及其混合物，并且整体形式在此温度下也能发挥作用，在废气中检测到很少的二恶英。我们的结果表明，Ru 修饰的 SnO ₂ /CeO ₂催化剂可满足再生催化氧化处理工业尾气中多种VOCs的需求。