Effects of Synthesis Method on the Physicochemical and Catalytic Properties of BEA Zeolites: Fid-Bau Portal

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Effects of Synthesis Method on the Physicochemical and Catalytic Properties of BEA Zeolites

Ponomareva, O. A. / Andriako, E. P. / Vdovchenko, N. K. / Kostyukov, I. A. / Vorobkalo, V. A. / Zasukhin, D. S. / Ivanova, I. I.

This study investigated the physicochemical properties of BEA zeolites with SiO₂/Al₂O₃ ratios of 50 to 250 synthesized in fluoride and alkaline media and tested their catalytic activity in alkylation of benzene with propylene under liquid phase conditions. The samples similar in SiO₂/Al₂O₃ ratio synthesized by the fluoride route exhibited a larger crystal size and fewer crystal defects. Regardless of the synthesis medium, the samples with SiO₂/Al₂O₃ = 50 proved to be more active and stable in alkylation of benzene with propylene than the samples with lower aluminum content in the zeolite framework. The samples prepared by the fluoride route achieved higher cumene selectivity. This can be explained by their lower external surface area than that in the zeolites prepared in alkaline media, where side reactions produce large molecules of di- and triisopropylbenzenes.

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Effects of Synthesis Method on the Physicochemical and Catalytic Properties of BEA Zeolites

Ponomareva, O. A. / Andriako, E. P. / Vdovchenko, N. K. / Kostyukov, I. A. / Vorobkalo, V. A. / Zasukhin, D. S. / Ivanova, I. I.

This study investigated the physicochemical properties of BEA zeolites with SiO₂/Al₂O₃ ratios of 50 to 250 synthesized in fluoride and alkaline media and tested their catalytic activity in alkylation of benzene with propylene under liquid phase conditions. The samples similar in SiO₂/Al₂O₃ ratio synthesized by the fluoride route exhibited a larger crystal size and fewer crystal defects. Regardless of the synthesis medium, the samples with SiO₂/Al₂O₃ = 50 proved to be more active and stable in alkylation of benzene with propylene than the samples with lower aluminum content in the zeolite framework. The samples prepared by the fluoride route achieved higher cumene selectivity. This can be explained by their lower external surface area than that in the zeolites prepared in alkaline media, where side reactions produce large molecules of di- and triisopropylbenzenes.

Effects of Synthesis Method on the Physicochemical and Catalytic Properties of BEA Zeolites

Ponomareva, O. A. / Andriako, E. P. / Vdovchenko, N. K. / Kostyukov, I. A. / Vorobkalo, V. A. / Zasukhin, D. S. / Ivanova, I. I.

This study investigated the physicochemical properties of BEA zeolites with SiO₂/Al₂O₃ ratios of 50 to 250 synthesized in fluoride and alkaline media and tested their catalytic activity in alkylation of benzene with propylene under liquid phase conditions. The samples similar in SiO₂/Al₂O₃ ratio synthesized by the fluoride route exhibited a larger crystal size and fewer crystal defects. Regardless of the synthesis medium, the samples with SiO₂/Al₂O₃ = 50 proved to be more active and stable in alkylation of benzene with propylene than the samples with lower aluminum content in the zeolite framework. The samples prepared by the fluoride route achieved higher cumene selectivity. This can be explained by their lower external surface area than that in the zeolites prepared in alkaline media, where side reactions produce large molecules of di- and triisopropylbenzenes.

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Titel:

Effects of Synthesis Method on the Physicochemical and Catalytic Properties of BEA Zeolites

Weitere Titelangaben:

Pet. Chem.

Beteiligte:

Ponomareva, O. A. (Autor:in) / Andriako, E. P. (Autor:in) / Vdovchenko, N. K. (Autor:in) / Kostyukov, I. A. (Autor:in) / Vorobkalo, V. A. (Autor:in) / Zasukhin, D. S. (Autor:in) / Ivanova, I. I. (Autor:in)

Erschienen in:

Petroleum Chemistry ; 62 ; 906-913

Erscheinungsdatum:

01.08.2022

Format / Umfang:

8 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544122070106

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

BEA zeolite , fluoride synthesis , alkylation of benzene with propylene , cumene , defects Chemistry , Industrial Chemistry/Chemical Engineering , Chemistry and Materials Science

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