High xenon/krypton selectivity in a metal-organic framework with small pores and strong adsorption sites

Youn Sang Bae, Brad G. Hauser, Yamil J. Colón, Joseph T. Hupp, Omar K. Farha, Randall Q. Snurr

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Separation of Xe/Kr mixtures was studied in two copper-paddlewheel metal-organic framework materials, MOF-505 and HKUST-1. For MOF-505, which has small pores with strong adsorption sites, high Xe/Kr selectivities (9–10) are obtained from breakthrough measurements and grand canonical Monte Carlo (GCMC) simulations. The consistent results from both techniques suggest that MOF-505 is a promising candidate for Xe/Kr separation. For HKUST-1, which has small octahedral pores, only modest Xe/Kr selectivities (4.5) are observed from breakthrough measurements, although the GCMC simulations predicted unusually high selectivities at low loadings.

Original languageEnglish
Pages (from-to)176-179
Number of pages4
JournalMicroporous and Mesoporous Materials
Publication statusPublished - 2013 Mar 1


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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