Preparing and studying Pt/WO3/ZrO2 catalysts for the isomerization of n-heptane

The effect of the temperature of WO 3 /ZrO 2 support calcination in the range of 700–1000°C on the phase composition, acid, and catalytic properties of Pt/WO 3 /ZrO 2 catalysts is studied. Using ammonia TPD, it is found that calcination in the temperature range of 850–950°C results in the formation...

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Bibliographic Details
Published in:Catalysis in industry 2017, Vol.9 (1), p.54-61
Main Authors: Smolikov, M. D., Shkurenok, V. A., Yablokova, S. S., Kir’yanov, D. I., Paukshtis, E. A., Leont’eva, N. N., Belyi, A. S., Drozdov, V. A.
Format: Article
Language:English
Subjects:
Air flow
Ammonia
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Domestic Catalysts
Heptanes
Isomerization
Phase composition
Roasting
Zirconium dioxide
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Summary:The effect of the temperature of WO 3 /ZrO 2 support calcination in the range of 700–1000°C on the phase composition, acid, and catalytic properties of Pt/WO 3 /ZrO 2 catalysts is studied. Using ammonia TPD, it is found that calcination in the temperature range of 850–950°C results in the formation of strong acid sites that increase the yield of the target products of the reaction of n -heptane isomerization: high octane di- and trimethylsubstituted isomers. DRIFT is used to determine the role of catalyst calcination in an air flow plays in the formation of charged platinum atoms, which results in higher catalyst activity.
ISSN:2070-0504
2070-0555
DOI:10.1134/S2070050417010135