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

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...

Full description

Saved in:
Bibliographic Details
Published in:Petroleum chemistry 2020-04, Vol.60 (4), p.516-524
Main Authors: Ponomareva, O. A., Maltseva, A. A., Popov, A. G., Dobryakova, I. V., Kasyanov, I. A., Ivanova, I. I.
Format: Article
Language:English
Subjects:
Acetone
Aluminosilicates
Aluminum silicates
Butylene
Catalysts
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Magnesium
Recrystallization
Route selection
Zeolites
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544120040118