Comparative study of methanol and dimethyl ether conversions to light olefins over a Mg-HZSM-5/Al2O3 catalyst in nitrogen and syngas atmospheres

Mendeleev Communications 2026

View at publisher
Authors: Konstantin B. Golubev, Ekaterina E Kolesnikova, Tatiana I. Batova, E. Kh. Khivrich, O. V. Arapova, Н. В. Колесниченко
DOI: 10.71267/mencom.7881
Cited by: 0
References: 22

Abstract

At low temperatures (300--320 °C), on a Mg-HZSM-5/Al2O3 catalyst, dimethyl ether provides a higher yield of light olefins than methanol, but its conversion is strongly suppressed in a syngas atmosphere compared with an inert nitrogen environment. In situ diffuse reflectance infrared Fourier transform spectroscopy revealed that this suppression is attributed to CO-induced carbonylation side reactions resulting in the formation of methyl acetate and acetic acid depleting Bronsted acid sites. Efficient olefin production requires temperatures above 350 °C to mitigate the carbonylation inhibition.

Fields of Study & Subjects

Zeolite Catalysis and Synthesis Catalysts for Methane Reforming Catalysis and Oxidation Reactions

Publication details

Journal / source
Mendeleev Communications
Volume
36
Issue
2
Pages
229–231
Publication date
1 January 2026
Language
RU