Adsorption complexes of methanol on zeolite ZSM-5

Gabriele Mirth, Johannes A. Lercher, Michael W. Anderson, Jacek Klinowski

Research output: Contribution to journalArticlepeer-review

207 Scopus citations

Abstract

Infrared spectroscopy, 1H MAS NMR and thermogravimetric analysis have been used to study the chemistry of methanol adsorbed on zeolites H-ZSM-5, Na-ZSM-5 and K-ZSM-5. On H-ZSM-5, methanol forms the CH3OH2+ methoxonium ion at low coverages. At higher coverages, large protonated clusters of strongly hydrogen-bonded molecules associated with the Brønsted-acid sites are present. In zeolites Na-ZSM-5 and K-ZSM-5 methanol is coordinatively adsorbed on the cation and forms weakly hydrogen-bonded clusters at higher equilibrium pressures.

Original languageEnglish
Pages (from-to)3039-3044
Number of pages6
JournalJournal of the Chemical Society, Faraday Transactions
Volume86
Issue number17
DOIs
StatePublished - 1990
Externally publishedYes

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