Light Hydrocarbon Adsorption Mechanisms in Two Calcium-Based Microporous Metal Organic Frameworks

Anna M. Plonka, Xianyin Chen, Hao Wang, Rajamani Krishna, Xinglong Dong, Debasis Banerjee, William R. Woerner, Yu Han, Jing Li, John B. Parise

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33 Citations (Scopus)

Abstract

The adsorption mechanism of ethane, ethylene, and acetylene (C2Hn; n = 2, 4, 6) on two microporous metal organic frameworks (MOFs) is described here that is consistent with observations from single crystal and powder X-ray diffraction, calorimetric measurements, and gas adsorption isotherm measurements. Two calcium-based MOFs, designated as SBMOF-1 and SBMOF-2 (SB: Stony Brook), form three-dimensional frameworks with one-dimensional open channels. As determined from single crystal diffraction experiments, channel geometries of both SBMOF-1 and SBMOF-2 provide multiple adsorption sites for hydrocarbon molecules through C-H⋯π and C-H⋯O interactions, similarly to interactions in the molecular and protein crystals. Both materials selectively adsorb C2 hydrocarbon gases over methane as determined with IAST and breakthrough calculations as well as experimental breakthrough measurements, with C2H6/CH4 selectivity as high as 74 in SBMOF-1.

Original languageEnglish
Pages (from-to)1636-1646
Number of pages11
JournalChemistry of Materials
Volume28
Issue number6
DOIs
Publication statusPublished - Mar 22 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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    Plonka, A. M., Chen, X., Wang, H., Krishna, R., Dong, X., Banerjee, D., Woerner, W. R., Han, Y., Li, J., & Parise, J. B. (2016). Light Hydrocarbon Adsorption Mechanisms in Two Calcium-Based Microporous Metal Organic Frameworks. Chemistry of Materials, 28(6), 1636-1646. https://doi.org/10.1021/acs.chemmater.5b03792