Oxidative Carbonylation of Methane to Acetic Acid over Commercial Rodium-Modified ZSM-5 Zeolites

The paper shows that introducing rhodium into zeolite significantly enhances the catalytic performance of the system. Rh/IK(UST), a catalyst sample distinguished by an increased concentration of strong acid sites, exhibited the highest activity and selectivity towards acetic acid (AA). In the presen...

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Bibliographic Details
Published inPetroleum chemistry Vol. 63; no. 6; pp. 648 - 654
Main Authors Kolesnichenko, N. V., Stashenko, A. N., Batova, T. I., Yashina, O. V., Kolesnikova, E. E., Golubev, K. B.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2023
Springer
Springer Nature B.V
Subjects
Acetic acid
Carbonyls
Catalysts
Cellulose
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Methane
Organic compounds
Raw materials
Rhodium
Synergistic effect
Terephthalic acid
Vinyl acetate
Zeolites
Brønsted acid sites
Rh single-atom sites
oxidative carbonylation of methane
acetic acid
ZSM-5 zeolites
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Summary:The paper shows that introducing rhodium into zeolite significantly enhances the catalytic performance of the system. Rh/IK(UST), a catalyst sample distinguished by an increased concentration of strong acid sites, exhibited the highest activity and selectivity towards acetic acid (AA). In the presence of this catalyst, the yield of AA more than doubled, and the AA/methanol ratio increased by more than an order of magnitude, compared to the other Rh-modified catalysts. A synergistic effect of strong Brønsted acid sites and Rh single-atom sites was found. Their proximity plays a key role in this mechanism.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544123060075