TY - JOUR

T1 - Synthesis, properties, and activity of MoVTeNbO catalysts modified by zirconia-pillared clays in oxidative dehydrogenation of ethane

AU - Shorayeva, Kamshat Abithanovna

AU - Massalimova, Bakytgul Kabykenovna

AU - Bespalko, Yulia Nikolaevna

AU - Kovalev, Evgenii Pavlovich

AU - Ishchenko, Arcady Vladimirovich

AU - Sadykov, Vladislav Aleksandrovich

N1 - Funding Information: Funding information: This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis (project AAAA-A21-121011390054-1) as well as by M. Kh. Dulaty Taraz Regional University, Taraz, Kazakhstan. Publisher Copyright: © 2021 Kamshat Abithanovna Shorayeva et al., published by De Gruyter 2021. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1/1

Y1 - 2021/1/1

N2 - 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.

AB - 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.

KW - composites with pillared clays

KW - MoVTeNbO mixed oxide

KW - oxidative dehydrogenation of ethane to ethylene

UR - http://www.scopus.com/inward/record.url?scp=85106244530&partnerID=8YFLogxK

U2 - 10.1515/chem-2021-0048

DO - 10.1515/chem-2021-0048

M3 - Article

AN - SCOPUS:85106244530

VL - 19

SP - 492

EP - 502

JO - Open Chemistry

JF - Open Chemistry

SN - 2391-5420

IS - 1

ER -