Valorisation of 2,5-dimethylfuran over zeolite catalysts studied by on-line FTIR-MS gas phase analysis
Artikel i vetenskaplig tidskrift, 2021

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.

Författare

Christopher Sauer

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Per-Anders Carlsson Group

Anders Loren

RISE Research Institutes of Sweden

Andreas Schaefer

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Per-Anders Carlsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Per-Anders Carlsson Group

Catalysis Science and Technology

2044-4753 (ISSN) 2044-4761 (eISSN)

Vol. In Press

Gröna aromater för en biobaserad ekonomi

Formas (2017-00420), 2018-01-01 -- 2020-12-31.

Ämneskategorier

Kemiska processer

Annan kemiteknik

Organisk kemi

DOI

10.1039/d1cy01312b

Mer information

Senast uppdaterat

2021-11-26