Title: Selective adsorption and separation of ortho-substituted alkylaromatics with the microporous aluminum terephthalate MIL-53
Authors: Alaerts, Luc
Maes, Michaƫl
Giebeler, Lars
Jacobs, Pierre
Martens, Johan
Denayer, Joeri F M
Kirschhock, Christine
De Vos, Dirk # ×
Issue Date: Oct-2008
Publisher: American Chemical Society
Series Title: Journal of the American Chemical Society vol:130 issue:43 pages:14170-14178
Abstract: The metal-organic framework MIL-53(Al) was tested for selective adsorption and separation of xylenes and ethylbenzene, ethyltoluenes, and cymenes using batch, pulse chromatographic, and breakthrough experiments. In all conditions tested, MIL-53 has the largest affinity for the ortho-isomer among each group of alkylaromatic compounds. Separations of the ortho-compounds from the other isomers can be realized using a column packed with MIL-53 crystallites. As evidenced by Rietveld refinements, specific interactions of the xylenes with the pore walls of MIL-53 determine selectivity. In comparison with the structurally similar metal-organic framework MIL-47, the selectivities among alkylaromatics found for MIL-53 are different. Separation of ethyltoluene and cymene isomers is more effective on MIL-53 than on MIL-47; the pores of MIL-53 seem to be a more suitable environment for hosting the larger ethyltoluene and cymene isomers than those of MIL-47.
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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