Acetone Conversion to Isobutylene over Magnesium-Containing Micro-Mesoporous MOR Zeolites: Fid-Bau Portal

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Acetone Conversion to Isobutylene over Magnesium-Containing Micro-Mesoporous MOR Zeolites

Ponomareva, O. A. / Maltseva, A. A. / Popov, A. G. / Dobryakova, I. V. / Kasyanov, I. A. / Ivanova, I. I.

Isobutylene synthesis from acetone in the presence of micro–mesoporous MOR zeolites obtained by hydrothermal recrystallization and modified with magnesium acetate by incipient wetness impregnation has been studied. A kinetic study of the reaction has been conducted, and product formation routes have been determined. It has been found that an increase in the mesopore content leads to an increase in the catalyst activity owing to the removal of diffusion restrictions. It has been shown that isobutylene formation occurs on both Lewis and Brønsted acid sites. The modification of the initial aluminosilicates with magnesium has been found to decrease the number and strength of Brønsted acid sites and thereby lead to a decrease in the number of side reactions and an increase in the time-on-stream stability of the catalysts.

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Acetone Conversion to Isobutylene over Magnesium-Containing Micro-Mesoporous MOR Zeolites

Ponomareva, O. A. / Maltseva, A. A. / Popov, A. G. / Dobryakova, I. V. / Kasyanov, I. A. / Ivanova, I. I.

Isobutylene synthesis from acetone in the presence of micro–mesoporous MOR zeolites obtained by hydrothermal recrystallization and modified with magnesium acetate by incipient wetness impregnation has been studied. A kinetic study of the reaction has been conducted, and product formation routes have been determined. It has been found that an increase in the mesopore content leads to an increase in the catalyst activity owing to the removal of diffusion restrictions. It has been shown that isobutylene formation occurs on both Lewis and Brønsted acid sites. The modification of the initial aluminosilicates with magnesium has been found to decrease the number and strength of Brønsted acid sites and thereby lead to a decrease in the number of side reactions and an increase in the time-on-stream stability of the catalysts.

Acetone Conversion to Isobutylene over Magnesium-Containing Micro-Mesoporous MOR Zeolites

Ponomareva, O. A. / Maltseva, A. A. / Popov, A. G. / Dobryakova, I. V. / Kasyanov, I. A. / Ivanova, I. I.

Isobutylene synthesis from acetone in the presence of micro–mesoporous MOR zeolites obtained by hydrothermal recrystallization and modified with magnesium acetate by incipient wetness impregnation has been studied. A kinetic study of the reaction has been conducted, and product formation routes have been determined. It has been found that an increase in the mesopore content leads to an increase in the catalyst activity owing to the removal of diffusion restrictions. It has been shown that isobutylene formation occurs on both Lewis and Brønsted acid sites. The modification of the initial aluminosilicates with magnesium has been found to decrease the number and strength of Brønsted acid sites and thereby lead to a decrease in the number of side reactions and an increase in the time-on-stream stability of the catalysts.

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Title:

Acetone Conversion to Isobutylene over Magnesium-Containing Micro-Mesoporous MOR Zeolites

Additional title:

Pet. Chem.

Contributors:

Ponomareva, O. A. (author) / Maltseva, A. A. (author) / Popov, A. G. (author) / Dobryakova, I. V. (author) / Kasyanov, I. A. (author) / Ivanova, I. I. (author)

Published in:

Petroleum Chemistry ; 60 ; 516-524

Publication date:

2020-04-01

Size:

9 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544120040118

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

acetone , isobutylene , micro–mesoporous catalysts , recrystallization , acid sites , modification , magnesium , mordenite Chemistry , Industrial Chemistry/Chemical Engineering , Chemistry and Materials Science

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