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

• Published in: Microporous and mesoporous materials Vol. 298; p. 110055
• Main Authors: Ribeiro, Rui P.P.L., Barreto, Jorge, Grosso Xavier, Mário D., Martins, Daniel, Esteves, Isabel A.A.C., Branco, Moritz, Tirolien, Thierry, Mota, José P.B., Bonfait, Grégoire
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 15-05-2020
• Subjects: Co3(ndc)3(dabco); Cryogenic adsorption; Gas storage; MOF; Neon; Cryogenic adsorption; Gas storage; Neon; Co3(ndc)3(dabco); MOF
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2020.110055

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.
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•Neon adsorption equilibrium was determined on Co3(ndc)3(dabco) MOF.•Experimental studies were performed within 77–320 K and 0–100 bar.•Co3(ndc)3(dabco) potential for Ne storage/delivery is evaluated.•The effect of temperature and aging on the MOF structure is studied.