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Issue 16, 2018
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Catalytic conversion of furanic compounds over Ga-modified ZSM-5 zeolites as a route to biomass-derived aromatics

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Abstract

Herein we report a mechanistic study of aromatization of furanics, as model compounds for cellulosic biomass, over (Ga)HZSM-5 catalysts. Applying combined gas chromatography and mass-spectrometry product analysis we were able to analyse conversion and selectivity reaction profiles with high temporal resolution. The thorough analysis of the product distribution allowed us to resolve the deoxygenation pathways of the furan molecules. We found that depending on the methyl substitution oxygen is removed either as water or COx, effecting the carbon efficiency of the process. While unsubstituted furan undergoes decarbonylation to form COx, methylated furans are deoxygenated by dehydration, resulting in a much higher carbon-efficiency. Furthermore, using in situ IR spectroscopy, we found that promotion of HZMS-5 with Ga in addition to enhanced aromatic selectivity influences the deactivation pathway leading to the preferential formation of proton-deficient polycyclic aromatic compounds.

Graphical abstract: Catalytic conversion of furanic compounds over Ga-modified ZSM-5 zeolites as a route to biomass-derived aromatics

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Publication details

The article was received on 16 May 2018, accepted on 17 Jul 2018 and first published on 18 Jul 2018


Article type: Paper
DOI: 10.1039/C8GC01528G
Citation: Green Chem., 2018,20, 3818-3827

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    Catalytic conversion of furanic compounds over Ga-modified ZSM-5 zeolites as a route to biomass-derived aromatics

    E. A. Uslamin, N. A. Kosinov, E. A. Pidko and E. J. M. Hensen, Green Chem., 2018, 20, 3818
    DOI: 10.1039/C8GC01528G

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