Title: N/S-heterocyclic contaminant removal from fuels by the mesoporous metal-organic framework MIL-100: the role of the metal ion
Authors: Van de Voorde, Ben ×
Boulhout, Mohammed
Vermoortele, Frederik
Horcajada, Patricia
Cunha, Denise
Lee, Ji Sun
Chang, Jong-San
Gibson, Emma
Lavalley, Jean-Claude
Daturi, Marco
Vimont, Alexandre
Beurroies, Isabelle
De Vos, Dirk #
Issue Date: May-2013
Publisher: American Chemical Society
Series Title: Journal of the American Chemical Society vol:26 issue:135 pages:9849-9856
Abstract: The influence of the metal ion in the mesoporous metal trimesate MIL-100(Al3+, Cr3+, Fe3+, V3+) on the adsorptive removal of N/S-heterocyclic molecules from fuels has been investigated by combining isotherms for adsorption from a model fuel solution with microcalorimetric and IR spectroscopic characterizations. The results show a clear influence of the different metals (Al, Fe, Cr, V) on the affinity for the heterocyclic compounds, on the integral adsorption en-thalpies and on the uptake capacities. Among several factors, the availability of coordinatively unsaturated sites and the presence of basic sites next to the coordinative vacancies are important factors contributing to the observed affinity differences for N-heterocyclic compounds. These trends were deduced from IR spectroscopic observation of adsorbed indole molecules, which can be chemisorbed coordinatively or by formation of hydrogen bonded species. Based on our results we are able to propose an optimized adsorbent for the deep and selective removal of nitrogen contaminants out of fuel feeds, namely MIL-100(V).
ISSN: 0002-7863
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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