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Production of isobutylene from acetone over micro–mesoporous catalysts

Ponomareva, O. A. / Mal’tseva, A. A. / Maerle, A. A. / Rodionova, L. I. / Pavlov, V. S. / Dobryakova, I. V. / Belova, M. V. / Ivanova, I. I.

Abstract The production of isobutylene from acetone over micro–mesoporous catalysts with different mesopore contents, which have been prepared using hydrothermal recrystallization of mordenite (MOR) zeolite modified with cesium acetate by incipient wetness impregnation, has been studied. It has been shown that cesium is inserted into the cation positions during the modification, at the same time the number of Brønsted acid sites in the samples decreased. It has been found that an increase in the content of mesopores in the catalyst leads to an increase in the initial rates of acetone conversion and isobutylene formation as a result of removing diffusion limitations. Brønsted acid sites have been shown to be preferable for the selective production of isobutylene from acetone. Micro–mesoporous materials operate more stably as compared to microporous materials.

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Production of isobutylene from acetone over micro–mesoporous catalysts

Ponomareva, O. A. / Mal’tseva, A. A. / Maerle, A. A. / Rodionova, L. I. / Pavlov, V. S. / Dobryakova, I. V. / Belova, M. V. / Ivanova, I. I.

Abstract The production of isobutylene from acetone over micro–mesoporous catalysts with different mesopore contents, which have been prepared using hydrothermal recrystallization of mordenite (MOR) zeolite modified with cesium acetate by incipient wetness impregnation, has been studied. It has been shown that cesium is inserted into the cation positions during the modification, at the same time the number of Brønsted acid sites in the samples decreased. It has been found that an increase in the content of mesopores in the catalyst leads to an increase in the initial rates of acetone conversion and isobutylene formation as a result of removing diffusion limitations. Brønsted acid sites have been shown to be preferable for the selective production of isobutylene from acetone. Micro–mesoporous materials operate more stably as compared to microporous materials.

Production of isobutylene from acetone over micro–mesoporous catalysts

Ponomareva, O. A. / Mal’tseva, A. A. / Maerle, A. A. / Rodionova, L. I. / Pavlov, V. S. / Dobryakova, I. V. / Belova, M. V. / Ivanova, I. I.

Abstract The production of isobutylene from acetone over micro–mesoporous catalysts with different mesopore contents, which have been prepared using hydrothermal recrystallization of mordenite (MOR) zeolite modified with cesium acetate by incipient wetness impregnation, has been studied. It has been shown that cesium is inserted into the cation positions during the modification, at the same time the number of Brønsted acid sites in the samples decreased. It has been found that an increase in the content of mesopores in the catalyst leads to an increase in the initial rates of acetone conversion and isobutylene formation as a result of removing diffusion limitations. Brønsted acid sites have been shown to be preferable for the selective production of isobutylene from acetone. Micro–mesoporous materials operate more stably as compared to microporous materials.

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Title:

Production of isobutylene from acetone over micro–mesoporous catalysts

Contributors:

Ponomareva, O. A. (author) / Mal’tseva, A. A. (author) / Maerle, A. A. (author) / Rodionova, L. I. (author) / Pavlov, V. S. (author) / Dobryakova, I. V. (author) / Belova, M. V. (author) / Ivanova, I. I. (author)

Published in:

Petroleum Chemistry ; 56 ; 253-258

Publication date:

2016-03-01

Size:

6 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544116030075

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

acetone , isobutylene , micro–mesoporous catalysts , cesium , mordenite Chemistry , Industrial Chemistry/Chemical Engineering

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