Authors:
Olga Yugay A.B. Bekturov Institute of Chemical Science, Ualikhanov 106, Almaty, Kazakhstan

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Tatyana Mikhailovskaya A.B. Bekturov Institute of Chemical Science, Ualikhanov 106, Almaty, Kazakhstan

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Lyudmila Saurambaeva A.B. Bekturov Institute of Chemical Science, Ualikhanov 106, Almaty, Kazakhstan

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Dauren Sembaev A.B. Bekturov Institute of Chemical Science, Ualikhanov 106, Almaty, Kazakhstan

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Pavel Vorobiov A.B. Bekturov Institute of Chemical Science, Ualikhanov 106, Almaty, Kazakhstan

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Abstract

The effect of ZrO2 and ZrV2O7 on the polymorphic transformation of anatase to rutile in the TiO2–V2O5, TiO2–ZrO2, TiO2–ZrV2O7, and V2O5–TiO2–ZrO2 systems has been investigated. It is shown that the temperature and duration of the heat treatment influence on the anatase stability in the investigated binary and ternary systems. It is established that V2O5 and ZrV2O7 accelerate the polymorphic transformation of anatase to rutile, but ZrO2 inhibits the phase change. Taking into account the ratio between V2O5, ZrO2, and ZrV2O7, formed in the ternary system, it is possible to maintain a definite quantity of anatase in a catalyst system. This permits one to influence the activity and selectivity of the modified vanadium oxide catalysts in the oxidation and ammoxidation of alkylbenzenes and alkylpyridines.

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation
1974
Volumes
per Year
1
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)