Composites comprising MoVTeNbO mixed oxide and zirconia-pillared montmorillonite clays (PilCs) were prepared. XRD and TEM with EDX studies confirmed the preservation of M1 MoVTeNbO phase in these composites responsible for high activity and selectivity in ethane oxidative dehydrogenation into ethylene. For composites with PilC content of 10 wt%, the best ethylene yield exceeding that of bulk MoVTeNbO oxide was demonstrated for clays with zirconia pillars doped with Ce and Al possessing the highest specific surface area. This is explained by optimized chemical interaction of these clays with MoVTeNbO mixed oxide improving its bulk oxygen mobility and reactivity by structure disordering while blocking surface sites responsible for combustion due to the stabilization of the reactive terminal oxygen species.

中文翻译：

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氧化锆桩粘土改性的MoVTeNbO催化剂在乙烷氧化脱氢中的合成，性能和活性

制备了包含MoVTeNbO混合氧化物和氧化锆立柱的蒙脱土（PilCs）的复合材料。XRD和TEM与EDX的研究证实了这些复合物中M1 MoVTeNbO相的保留，这是乙烷氧化脱氢成乙烯的高活性和选择性的原因。对于PilC含量为10 wt％的复合材料，对于氧化锆柱掺杂了Ce和Al的比表面积最高的粘土，其最佳乙烯收率超过了MoVTeNbO本体氧化物。这可以通过这些粘土与MoVTeNbO混合氧化物的优化化学相互作用来解释，通过结构紊乱改善了其整体的氧迁移率和反应性，同时由于反应性末端氧的稳定而阻止了负责燃烧的表面位点。