Cryogenic neon adsorption on Co3(ndc)3(dabco) metal-organic framework

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Abstract

Neon (Ne) is a noble gas with great commercial importance, therefore systems for its storage and delivery are of utmost interest. Adsorption-based technologies have great potential for gas storage and can be an interesting option for Ne applications. We have measured Ne adsorption equilibrium on the little-studied metal-organic framework Co3(ndc)3(dabco) over wide temperature and pressure ranges, 77–320 K and 0–100 bar, respectively. The determined isosteric heat of adsorption was found to be nearly independent of loading (average value of 3.6 kJ/mol). The adsorption equilibrium data show that 6.1 mol/m3 of Ne can be delivered at 1 bar and 300 K if the gas is loaded at 65 bar and 150 K. However, 18.5 mol/m3 of Ne can be delivered at the same discharge conditions if the storage temperature is decreased to 77 K. On a mass basis, Co3(ndc)3(dabco) shows similar performance for Ne storage as HKUST-1 and slightly lower on a volume basis. Exposing Co3(ndc)3(dabco) to temperatures near 400 K adversely affects its adsorption properties, in spite of the TGA results showing that the structure degrades only at 650 K.

Original languageEnglish
Article number110055
JournalMicroporous and Mesoporous Materials
Volume298
DOIs
Publication statusPublished - 15 May 2020

Keywords

  • Co(ndc)(dabco)
  • Cryogenic adsorption
  • Gas storage
  • MOF
  • Neon

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