Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 183, Issue -, Pages 162-167Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2013.09.001
Keywords
Metal-organic framework; Gas chromatography; Heat of adsorption; Diffusion coefficient; Surface coating
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Funding
- Deutsche Forschungsgemeinschaft [1362]
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The unique properties of MOFs (MOF = metal-organic framework) such as their adjustable pore size, high intrinsic surface area and organic functionalizations make them a suitable class of materials for chromatographic separations. Micro particles of [Cu-2(bdc)(2)(dabco)] (bdc(2-) = terephthalate, DABCO = 1,4-diazabicyclo[2.2.2]octane) were prepared by a cyclic deposition method based on the technique of the so called controlled SBU approach and anchored via SAMs (SAM = self-assembled monolayer) in a short GC capillary column to generate a wall-bonded cross linked stationary phase. It could be demonstrated, that the fabricated column exhibits a high separation power for the light hydrocarbons C-1-C-7. Chromatographic parameters, including resolution factors and selectivity as well as thermodynamic data characterizing the interaction between the stationary phase and the analytes, were determined from the temperature-dependent measurements of the retentions times of these analytes. In addition, isothermal measurements were used for the calculation of diffusion constants in [Cu-2(bdc)(2)(dabco)]. (C) 2013 Elsevier Inc. All rights reserved.
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