Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 129, Issue 1-2, Pages 238-242Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2009.09.022
Keywords
Metal-organic framework; n-Butane adsorption; Heat of adsorption; Adsorption rate
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The n-butane adsorption capacity and heat of adsorption for the metal-organic frameworks Cu-3(btc)(2) (btc = benzene-1,3,5-tricarboxylate) and MIL-101 was determined at three different temperatures (293, 303, and 313 K) under dynamic conditions at atmospheric pressure with a micro-balance combined with a Tian-Calvet micro-calorimeter. The adsorption rate was studied at the adsorption temperature of 293 K. The n-butane adsorption properties were compared with activated carbon Sorbonorit 3. For low n-butane concentration the microporous Cu-3(btc)(2) has a higher storage capacity than the mesoporous material MIL-101. For high n-butane concentrations it is vice versa. The saturation capacity at 293 K for Cu-3(btc)(2) is 3.7 mmol g(-1) and for MIL-101 remarkable 11.2 mmol g(-1). The storage capacity and adsorption rate depends on the alkane concentration. For higher n-butane concentration MIL-101 has a higher adsorption rate than Cu-3(btc)(2) independent on the amount of adsorbed n-butane. (C) 2009 Elsevier Inc. All rights reserved.
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