Gas sorption properties of microporous metal organic frameworks

A low-temperature gas sorption study has been carried out on four three-dimensional microporous metal organic framework (MMOF) structures and two two-dimensional layered structures. The pore characteristics are analyzed based on the argon adsorption–desorption isotherms at 87 K. The results from hyd...

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Bibliographic Details
Published inJournal of solid state chemistry Vol. 178; no. 8; pp. 2527 - 2532
Main Authors Lee, JeongYong, Li, Jing, Jagiello, Jacek
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.08.2005
Subjects
ADSORPTION
ADSORPTION HEAT
ADSORPTION ISOTHERMS
ARGON
DENSITY
DESORPTION
Gas sorption
HEAT
HYDROGEN
Hydrogen adsorption
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
Isostereic heat of adsorption
Metal organic framework
ORGANOMETALLIC COMPOUNDS
TEMPERATURE RANGE 0065-0273 K
UPTAKE
Metal organic framework
Gas sorption
Hydrogen adsorption
Isostereic heat of adsorption
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Summary:A low-temperature gas sorption study has been carried out on four three-dimensional microporous metal organic framework (MMOF) structures and two two-dimensional layered structures. The pore characteristics are analyzed based on the argon adsorption–desorption isotherms at 87 K. The results from hydrogen sorption experiments conducted at 77 and 87 K show that all MMOFs have a relatively high hydrogen uptake, with adsorbed hydrogen densities falling in the range of liquid hydrogen. Isosteric heats of hydrogen adsorption data calculated based on the Clausius–Clapeyron equation are consistent with these observations, indicating strong sorbent–sorbate interactions. Hydrogen adsorption isotherms measured at 77 and 87 K.
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2005.07.002