Ru-CeZrO catalysts, prepared by stepwise precipitation method, were investigated for the catalytic combustion of vinyl chloride (VC). Ru-O-Ce is a highly reactive structure in the redox ability. The Ce-O-Zr solid solution structure enhances the strong metal-support-interaction (SMSI) between Ru and Ce, thereby increasing the content of Ru-O-Ce structure, which can be modulated by the molar ratio of Ce/(Ce + Zr) in the catalyst. Zr doping also enhances the surface acid sites. In situ DRIFTS reveals that Ru-CeZrO catalyst avoids chlorine poisoning, and Ru-O-Ce provides sufficient chemically adsorbed oxygen species (CAOS) to promote formation of formate intermediate species. Ru-CeZrO catalyst exhibited the best catalytic performance with T of 227 °C under the reaction conditions of 1000 ppm VC and WHSV of 30,000 mL·g·h. Moreover, Ru-CeZrO catalyst exhibited the superior resistance to high temperature, chlorine poisoning and water, and excellent catalytic activity for the catalytic combustion of various VOCs.

中文翻译：

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通过 Ru-CexZr1-xO2 催化剂的固溶体结构增强 Ru-O-Ce 相互作用，用于氯乙烯的高效催化燃烧

采用逐步沉淀法制备Ru-CeZrO催化剂，研究其催化燃烧氯乙烯（VC）的性能。 Ru-O-Ce是一种具有高氧化还原能力的活性结构。 Ce-O-Zr固溶体结构增强了Ru和Ce之间的强金属-载体相互作用（SMSI），从而增加了Ru-O-Ce结构的含量，其含量可以通过Ce/(Ce的摩尔比来调节) + Zr) 在催化剂中。 Zr 掺杂还增强了表面酸性位点。原位漂移表明Ru-CeZrO催化剂避免了氯中毒，并且Ru-O-Ce提供了足够的化学吸附氧物质（CAOS）以促进甲酸盐中间物质的形成。 Ru-CeZrO催化剂在1000 ppm VC和30,000 mL·g·h的WHSV条件下表现出最佳的催化性能，T为227 ℃。此外，Ru-CeZrO催化剂表现出优异的耐高温、耐氯中毒和耐水性，对各种VOCs的催化燃烧具有优异的催化活性。