A pulse chromatographic study of the adsorption properties of the amino-MIL-53 (Al) metal-organic framework

Sarah Couck; Tom Rémy; Gino V. Baron; Jorge Gascon; Freek Kapteijn; Joeri F.M. Denayer

doi:10.1039/b927115e

A pulse chromatographic study of the adsorption properties of the amino-MIL-53 (Al) metal-organic framework

Sarah Couck, Tom Rémy, Gino V. Baron, Jorge Gascon, Freek Kapteijn, Joeri F.M. Denayer

Research output: Contribution to journal › Article › peer-review

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Abstract

Low-coverage adsorption properties of the metal-organic framework amino-MIL-53 (Al) were determined using the pulse chromatographic technique. By using n-alkanes, iso-alkanes, 1-alkenes, cyclohexane and benzene as probe molecules, the nature of the adsorptive interactions in amino-MIL-53 (Al) was studied. Henry adsorption constants and adsorption enthalpies of iso-alkanes are significantly lower than those of the linear alkanes, demonstrating the shape selective properties of amino-MIL-53. The presence of amino-groups in the pores of the material increases the electrostatic contributions with molecules containing double bonds. A simple model relates adsorption enthalpies to the number of hydrogen atoms and double bonds in the molecule. The effective pore size of the material was estimated based on the relationship between adsorption enthalpy and entropy.

Original language	English (US)
Pages (from-to)	9413-9418
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	12
Issue number	32
DOIs	https://doi.org/10.1039/b927115e
State	Published - Aug 28 2010
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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abstract = "Low-coverage adsorption properties of the metal-organic framework amino-MIL-53 (Al) were determined using the pulse chromatographic technique. By using n-alkanes, iso-alkanes, 1-alkenes, cyclohexane and benzene as probe molecules, the nature of the adsorptive interactions in amino-MIL-53 (Al) was studied. Henry adsorption constants and adsorption enthalpies of iso-alkanes are significantly lower than those of the linear alkanes, demonstrating the shape selective properties of amino-MIL-53. The presence of amino-groups in the pores of the material increases the electrostatic contributions with molecules containing double bonds. A simple model relates adsorption enthalpies to the number of hydrogen atoms and double bonds in the molecule. The effective pore size of the material was estimated based on the relationship between adsorption enthalpy and entropy.",

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AU - Couck, Sarah

AU - Rémy, Tom

AU - Baron, Gino V.

AU - Gascon, Jorge

AU - Kapteijn, Freek

AU - Denayer, Joeri F.M.

PY - 2010/8/28

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AB - Low-coverage adsorption properties of the metal-organic framework amino-MIL-53 (Al) were determined using the pulse chromatographic technique. By using n-alkanes, iso-alkanes, 1-alkenes, cyclohexane and benzene as probe molecules, the nature of the adsorptive interactions in amino-MIL-53 (Al) was studied. Henry adsorption constants and adsorption enthalpies of iso-alkanes are significantly lower than those of the linear alkanes, demonstrating the shape selective properties of amino-MIL-53. The presence of amino-groups in the pores of the material increases the electrostatic contributions with molecules containing double bonds. A simple model relates adsorption enthalpies to the number of hydrogen atoms and double bonds in the molecule. The effective pore size of the material was estimated based on the relationship between adsorption enthalpy and entropy.

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A pulse chromatographic study of the adsorption properties of the amino-MIL-53 (Al) metal-organic framework

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