UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Insight into the effects of confined hydrocarbon species on the lifetime of methanol conversion catalysts

Lezcano-Gonzalez, I; Campbell, E; Hoffman, AEJ; Bocus, M; Sazanovich, IV; Towrie, M; Agote-Aran, M; ... Beale, AM; + view all (2020) Insight into the effects of confined hydrocarbon species on the lifetime of methanol conversion catalysts. Nature Materials , 19 pp. 1081-1087. 10.1038/s41563-020-0800-y.

[img] Text
KGR_article_RevisedVersion_230720.pdf - Accepted version
Access restricted to UCL open access staff until 15 March 2021.

Download (1MB)

Abstract

The methanol-to-hydrocarbons reaction refers collectively to a series of important industrial catalytic processes to produce either olefins or gasoline. Mechanistically, methanol conversion proceeds through a ‘pool’ of hydrocarbon species. For the methanol-to-olefins process, these species can be delineated broadly into ‘desired’ lighter olefins and ‘undesired’ heavier fractions that cause deactivation in a matter of hours. The crux in further catalyst optimization is the ability to follow the formation of carbonaceous species during operation. Here, we report the combined results of an operando Kerr-gated Raman spectroscopic study with state-of-the-art operando molecular simulations, which allowed us to follow the formation of hydrocarbon species at various stages of methanol conversion. Polyenes are identified as crucial intermediates towards formation of polycyclic aromatic hydrocarbons, with their fate determined largely by the zeolite topology. Notably, we provide the missing link between active and deactivating species, which allows us to propose potential design rules for future-generation catalysts.

Type: Article
Title: Insight into the effects of confined hydrocarbon species on the lifetime of methanol conversion catalysts
DOI: 10.1038/s41563-020-0800-y
Publisher version: https://doi.org/10.1038/s41563-020-0800-y
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Heterogeneous catalysis, Porous materials, Raman spectroscopy, Reaction mechanisms
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10112481
Downloads since deposit
1Download
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item