Niobium-containing catalysts for oxydehydrogenation of hydrocarbons and alcohols

The first methods are developed for introducing niobium(V) into Mg-Al hydrotalcites used as precursors of oxide catalysts for oxydehydrogenation (OD) of alkanes and alcohols. Samples of niobium(V)-containing oxide catalysts are synthesized. Their catalytic properties are studied in oxydehydrogenatio...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2011, Vol.56 (2), p.168-172
Main Authors: Krasnobaeva, O. N, Belomestnykh, I. P, Nosova, T. A, Elizarova, T. A, Isagulyants, G. V, Kolesnikov, S. P, Danilov, V. P
Format: Article
Language:English
Subjects:
Alcohols
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Ethane
Ethylbenzene
Inorganic Chemistry
Oxides
Styrenes
Synthesis and Properties of Inorganic Compounds
Transformations
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Summary:The first methods are developed for introducing niobium(V) into Mg-Al hydrotalcites used as precursors of oxide catalysts for oxydehydrogenation (OD) of alkanes and alcohols. Samples of niobium(V)-containing oxide catalysts are synthesized. Their catalytic properties are studied in oxydehydrogenation of ethane and ethylbenzene to styrene, oxidation dehydrocyclization of octane into ethylbenzene and styrene, and oxydehydrogenation of sec-butanol to ketone (octane-(2)-one). It is ascertained that ethane transformation into ethylene is highly a selective highly process (92-97%) at low temperatures (450-500°C) in the presence of a niobium-containing catalyst; the catalyst is appreciably efficient in ethylbenzene transformation to styrene and dehydrocyclization of n-octane to ethylbenzene and styrene, and in oxydehydrogenation of secbutanol to octane-(2)-one. All the catalysts studied operate stably in OD reactions; no decrease in their activity or selectivity was detected after 50 h operation.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023611020148