Effect of the ZSM-23 Synthesis Method on the Properties of Pt/ZSM-23/Al2O3 Catalysts in n-Decane Conversion

Zeolites of the MTT framework type (Si/Al = 30) have been synthesized using dimethylformamide as a template and by a template-free method (Si/Al = 24). The morphology, textural, and acidic properties of the synthesized zeolites have been studied by scanning electron microscopy, high-resolution trans...

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Bibliographic Details
Published in:Petroleum chemistry 2020-02, Vol.60 (2), p.212-218
Main Authors: Smirnova, M. Yu, Piryutko, L. V., Brester, Yu. S., Parfenov, M. V., Kaichev, V. V., Klimov, O. V., Noskov, A. S.
Format: Article
Language:English
Subjects:
Aluminum oxide
Ammonia
Catalysts
Chemistry
Chemistry and Materials Science
Electron microscopes
Electron microscopy
Industrial Chemistry/Chemical Engineering
Infrared spectroscopy
Isomerization
Microscopy
Morphology
Platinum
Properties (attributes)
Silicon
Zeolites
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Summary:Zeolites of the MTT framework type (Si/Al = 30) have been synthesized using dimethylformamide as a template and by a template-free method (Si/Al = 24). The morphology, textural, and acidic properties of the synthesized zeolites have been studied by scanning electron microscopy, high-resolution transmission electron microscopy, N 2 adsorption, IR spectroscopy of adsorbed pyridine, and temperature-programmed desorption of ammonia and compared with the properties of a commercial ZSM-23 zeolite (Si/Al = 24). Zeolite powders have been used to prepare ZSM-23+Al 2 O 3 supports and then Pt-modified bifunctional catalysts, the properties of which have been tested in n -decane hydroconversion. It has been shown that the isomerization activity of the Pt/ZSM-23/Al 2 O 3 catalysts is largely determined by the texture and morphology of the original zeolites.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544120020085