Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Effect of Selenium Additives on the Physicochemical and Catalytic Properties of VMoTeNbO Catalysts in the Oxidative Dehydrogenation of Ethane. / Kardash, T. Yu; Lazareva, E. V.; Svintsitskiy, D. A. и др.
в: Kinetics and Catalysis, Том 60, № 3, 01.05.2019, стр. 355-365.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Effect of Selenium Additives on the Physicochemical and Catalytic Properties of VMoTeNbO Catalysts in the Oxidative Dehydrogenation of Ethane
AU - Kardash, T. Yu
AU - Lazareva, E. V.
AU - Svintsitskiy, D. A.
AU - Kovalev, E. P.
AU - Bondareva, V. M.
PY - 2019/5/1
Y1 - 2019/5/1
N2 - Abstract: The effect of selenium additives on the structure, physicochemical, and catalytic properties of VMoTeNbO catalysts in the oxidative dehydrogenation of ethane was studied. It was shown that the introduction of selenium on the first stage of catalyst preparation (mixing of the initial solutions) makes it possible to obtain in the course of subsequent heat treatment highly crystallized samples, which mainly include the M1 phase. Despite the fact that, in the process of heat treatment, selenium is completely removed from the samples, the prepared catalysts differ markedly from unmodified samples and demonstrate a higher selectivity to ethylene at a conversion of ethane of 93%. The observed effects are due to the influence of selenium on the process of formation of the M1 phase resulting in increase of its crystallinity.
AB - Abstract: The effect of selenium additives on the structure, physicochemical, and catalytic properties of VMoTeNbO catalysts in the oxidative dehydrogenation of ethane was studied. It was shown that the introduction of selenium on the first stage of catalyst preparation (mixing of the initial solutions) makes it possible to obtain in the course of subsequent heat treatment highly crystallized samples, which mainly include the M1 phase. Despite the fact that, in the process of heat treatment, selenium is completely removed from the samples, the prepared catalysts differ markedly from unmodified samples and demonstrate a higher selectivity to ethylene at a conversion of ethane of 93%. The observed effects are due to the influence of selenium on the process of formation of the M1 phase resulting in increase of its crystallinity.
KW - ethane
KW - M1 phase
KW - oxidative dehydrogenation
KW - selenium
KW - VMoTeNbO catalysts
KW - MOVTENBO CATALYSTS
KW - SELECTIVE OXIDATION
KW - PROPANE AMMOXIDATION
KW - ACTIVATION
KW - PRECURSOR
KW - STABILITY
KW - OXIDE M1 PHASE
KW - NB
KW - CHEMISTRY
KW - DYNAMICS
UR - http://www.scopus.com/inward/record.url?scp=85067461296&partnerID=8YFLogxK
U2 - 10.1134/S0023158419030078
DO - 10.1134/S0023158419030078
M3 - Article
AN - SCOPUS:85067461296
VL - 60
SP - 355
EP - 365
JO - Kinetics and Catalysis
JF - Kinetics and Catalysis
SN - 0023-1584
IS - 3
ER -
ID: 20641882