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Valorisation of 2,5-dimethylfuran over zeolite catalysts studied by on-line FTIR-MS gas phase analysis
Chalmers University of Technology, Sweden.
RISE Research Institutes of Sweden, Materials and Production, Applied Mechanics.ORCID iD: 0000-0003-0748-192x
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
2022 (English)In: Catalysis Science & Technology, ISSN 2044-4753, E-ISSN 2044-4761, Vol. 12, no 3, p. 750-761Article in journal (Refereed) Published
Abstract [en]

The valorisation of 2,5-dimethylfuran (2,5-dmf) by catalytic fast pyrolysis (CFP) was studied by on-line FTIR-MS gas phase analysis. Zeolite beta, H-ZSM-5 and Cu-ZSM-5 were characterised and used as catalysts. The on-line analysis enables sufficient time resolution to follow subminute transient phenomena, e.g., the impact of catalyst pretreatment and time on stream (TOS) on the reaction selectivity. The results show, that the initial selectivity towards benzene, toluene and xylene (BTX) aromatics is high but decreases with TOS while the isomerisation rates of 2,5-dmf towards 2,4-dimethylfuran and cyclic ketones increase. This indicates the involvement of specific active sites for the different conversion processes. The formation of BTX compounds is linked to the availability of specific olefins, as supported by temperature programmed desorption experiments, which is indicative of aromatisation stemming directly from the olefin pool rather than via Diels-Alder reactions. 

Place, publisher, year, edition, pages
Royal Society of Chemistry , 2022. Vol. 12, no 3, p. 750-761
Keywords [en]
Catalyst selectivity, Gases, Olefins, Temperature programmed desorption, Zeolites, Benzene- toluenes, Fast pyrolysis, FTIR, Gas-phase analysis, H-ZSM-5, Time on streams, Valorisation, Zeolite beta, Zeolite catalyst, ]+ catalyst, Ketones
National Category
Chemical Process Engineering
Identifiers
URN: urn:nbn:se:ri:diva-58775DOI: 10.1039/d1cy01312bScopus ID: 2-s2.0-85124580642OAI: oai:DiVA.org:ri-58775DiVA, id: diva2:1642097
Note

Funding details: Svenska Forskningsrådet Formas, 2017-00420; Funding details: Knut och Alice Wallenbergs Stiftelse, KAW 2005.0055; Funding text 1: This work is financially supported by the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (Formas) [No. 2017-00420]. Financial support from Knut and Alice Wallenberg foundation [Dnr KAW 2005.0055] is gratefully acknowledged.

Available from: 2022-03-03 Created: 2022-03-03 Last updated: 2023-05-09Bibliographically approved

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