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J Chromatogr A

Title:		Consequences of cavity size and chemical environment on the adsorption properties of isoreticular metal-organic frameworks: an inverse gas chromatography study
Author(s):		Gutierrez I; Diaz E; Vega A; Ordonez S;
Address:		"Department of Chemical Engineering and Environmental Technology, University of Oviedo, Faculty of Chemistry, Julian Claveria s/n, 33006 Oviedo, Spain"
Journal Title:		J Chromatogr A
Year:		2013
Volume:		20121213
Issue:
Page Number:		173 - 180
DOI:		10.1016/j.chroma.2012.12.006
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		"The role of the structure of three isoreticular metal-organic frameworks (IRMOFs) on their adsorption behavior has been studied in this work, selecting different kinds of volatile organic compounds (VOCs) as adsorbates (alkanes, alkenes, cycloalkanes, aromatics and chlorinated). For this purpose, three samples (IRMOF-1, IRMOF-8 and IRMOF-10) with cubic structure and without functionalities on the organic linkers were synthesized. Adsorption capacities at infinite dilution were derived from the adsorption isotherms, whereas thermodynamic properties have been determined from chromatographic retention volume. The capacity and the strength of adsorption were strongly influenced by the adsorbate size. This effect is especially relevant for n-alkanes adsorption, indicating the key role of the cavity size on this phenomenon, and hence the importance of the IRMOF structural properties. A different behavior has been observed for the polar compounds, where an enhancement on the specificity of the adsorption with the pi-electron rich regions was observed. This fact suggests the specific interaction of these molecules with the organic linkers of the IRMOFs"
Keywords:		"Adsorption Alkanes/isolation & purification Alkenes/isolation & purification Biphenyl Compounds/*chemistry Chromatography, Gas/*methods Dicarboxylic Acids/*chemistry Hydrocarbons, Aromatic/isolation & purification Organometallic Compounds/*chemistry Pheno;"
Notes:		"MedlineGutierrez, Ines Diaz, Eva Vega, Aurelio Ordonez, Salvador eng Research Support, Non-U.S. Gov't Netherlands 2013/01/01 J Chromatogr A. 2013 Jan 25; 1274:173-80. doi: 10.1016/j.chroma.2012.12.006. Epub 2012 Dec 13"