Single and Multicomponent Sorption of CO2, CH4 and N2 in a Microporous Metal-Organic Framework

Single and multicomponent fixed-bed adsorption of CO 2 , N 2 , and CH 4 on crystals of MOF-508b has been studied in this work. Adsorption equilibrium was measured at temperatures ranging from 303 to 343 K and partial pressures up to 4.5 bar. MOF-508b is very selective for CO 2 and the loadings of CH...

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Bibliographic Details
Published in:Separation science and technology 2008-01, Vol.43 (13), p.3494-3521
Main Authors: Bárcia, Patrick S., Bastin, Laurent, Hurtado, Eric J., Silva, José A. C., Rodrigues, Alírio E., Chen, Banglin
Format: Article
Language:English
Subjects:
dynamic
dynamic simulation
fixed bed
metal-organic framework
multi-component adsorption
natural gas
separation
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Summary:Single and multicomponent fixed-bed adsorption of CO 2 , N 2 , and CH 4 on crystals of MOF-508b has been studied in this work. Adsorption equilibrium was measured at temperatures ranging from 303 to 343 K and partial pressures up to 4.5 bar. MOF-508b is very selective for CO 2 and the loadings of CH 4 and N 2 are practically temperature independent. The Langmuir isotherm model provides a good representation of the equilibrium data. A dynamic model based on the LDF approximation for the mass transfer has been used to describe with good accuracy the adsorption kinetics of single, binary and ternary breakthrough curves. It was found that the intra-crystalline diffusivity for CO 2 is one order of magnitude faster than for CH 4 and N 2 .
ISSN:0149-6395
1520-5754
DOI:10.1080/01496390802282347