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

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

doi:10.1515/chem-2021-0048

Open Chemistry (Apr 2021)

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

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

Affiliations

Shorayeva Kamshat Abithanovna: Department of Chemistry and Chemical Technology, M. Kh. Dulaty Taraz Regional University, 60, St. Tole Bi, 080000, Taraz, Kazakhstan
Massalimova Bakytgul Kabykenovna: Department of Chemistry and Chemical Technology, M. Kh. Dulaty Taraz Regional University, 60, St. Tole Bi, 080000, Taraz, Kazakhstan
Bespalko Yulia Nikolaevna: Department of Heterogeneous Catalysis, Laboratory of Deep Oxidation Catalysts, Boreskov Institute of Catalysis, 5, Ave. Lavrentieva, 630090, Novosibirsk, Russia
Kovalev Evgenii Pavlovich: Department of Heterogeneous catalysis, Laboratory of Heterogeneous Selective Oxidation, Boreskov Institute of Catalysis, 5, Ave. Lavrentieva, 630090, Novosibirsk, Russia
Ishchenko Arcady Vladimirovich: Catalyst Research Department, Boreskov Institute of Catalysis, 5, Ave. Lavrentieva, 630090, Novosibirsk, Russia
Sadykov Vladislav Aleksandrovich: Department of Natural Sciences, Novosibirsk State University, 2, Pirogova St., 630090, Novosibirsk, Russia

DOI: https://doi.org/10.1515/chem-2021-0048
Journal volume & issue: Vol. 19, no. 1
pp. 492 – 502

Abstract

Read online

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.

Published in Open Chemistry

ISSN: 2391-5420 (Online)
Publisher: De Gruyter
Country of publisher: Poland
LCC subjects: Science: Chemistry
Website: https://www.degruyter.com/journal/key/CHEM/html

About the journal

Abstract

Keywords