Co-Aromatization of Furan and Methanol over ZSM-5 - A Pathway to Bio-Aromatics
Evgeny A. Uslamin (Eindhoven University of Technology)
N. Kosinov (Eindhoven University of Technology)
Georgy A. Filonenko (TU Delft - ChemE/Inorganic Systems Engineering)
Brahim Mezari (Eindhoven University of Technology)
E.A. Pidko (TU Delft - ChemE/Inorganic Systems Engineering, TU Delft - ChemE/Algemeen)
E. J.M. Hensen (Eindhoven University of Technology)
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Abstract
Aromatization of furan and substituted furans over zeolite catalysts is a promising reaction to convert cellulose-derived compounds into valuable aromatic hydrocarbons and light olefins. A lack of understanding of the reaction mechanism however hinders further development of this process. Here, we propose the reaction mechanism, underlying the chemistry of furan and methanol co-aromatization over HZSM-5 zeolite catalyst. Applying 13C isotope labeling in a combination with NMR spectroscopy and high temporal resolution gas chromatography-mass spectrometry analysis, we demonstrate that aromatization of furan and methanol are not mechanistically separated and can be described within the dual-cycle hydrocarbon pool mechanism. Cofeeding furan with methanol leads to a significant enhancement of light aromatics selectivity and increased catalyst lifetime.