Deactivation mechanisms in methanol-to-hydrocarbons chemistry

Praveen Bollini, Aditya Bhan

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A precise understanding of chemistries mediating deactivation in methanol to hydrocarbons (MTH) conversion over zeolite/zeotype materials has until recently remained elusive despite extensive research efforts focused on the question of catalyst deactivation. This chapter discusses some key recent developments that have helped elucidate the identity and mechanistic provenance of key intermediates mediating deactivation during MTH conversion, and strategies aimed at mitigating their formation. Emphasis is placed on experimental evidence supporting the role of methanol-transfer dehydrogenation to formaldehyde in effecting catalyst deactivation along with a mechanism for polycyclic aromatic hydrocarbon (coke) formation consistent with reported observations. Ultimately, strategies for enhancing catalyst lifetime based on either inhibiting formaldehyde formation, or scavenging formaldehyde, once formed, are discussed, and key knowledge gaps with reference to MTH deactivation chemistries highlighted.

Original languageEnglish (US)
Title of host publicationCatalysis, Volume 30
EditorsYi-Fan Han, James J. Spivey
PublisherRoyal Society of Chemistry
Pages146-156
Number of pages11
ISBN (Electronic)9781788011518
DOIs
StatePublished - Jan 1 2018

Publication series

NameCatalysis
Volume30
ISSN (Print)0140-0568
ISSN (Electronic)1465-1920

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  • Cite this

    Bollini, P., & Bhan, A. (2018). Deactivation mechanisms in methanol-to-hydrocarbons chemistry. In Y-F. Han, & J. J. Spivey (Eds.), Catalysis, Volume 30 (pp. 146-156). (Catalysis; Vol. 30). Royal Society of Chemistry. https://doi.org/10.1039/9781788013048-00146