Synthesis, properties, and activity of MoVTeNbO catalysts modified by zirconia-pillared clays in oxidative dehydrogenation of ethane

Kamshat Abithanovna Shorayeva, Bakytgul Kabykenovna Massalimova, Yulia Nikolaevna Bespalko, Evgenii Pavlovich Kovalev, Arcady Vladimirovich Ishchenko, Vladislav Aleksandrovich Sadykov

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

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.

Язык оригиналаанглийский
Страницы (с-по)492-502
Число страниц11
ЖурналOpen Chemistry
Том19
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2021

Предметные области OECD FOS+WOS

  • 2.05 ТЕХНОЛОГИЯ МАТЕРИАЛОВ
  • 1.04 ХИМИЧЕСКИЕ НАУКИ

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