Stepped water isotherm and breakthrough curves on aluminium fumarate metal–organic framework: experimental and modelling study

Adsorption of water vapour on the Al-fumarate metal–organic framework (MOF) was studied in static and dynamic conditions, by performing gravimetric and fixed bed experiments. A two-step, type IV water isotherm is obtained, which reveals the complexity and the duality of the hydrophilic/hydrophobic b...

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Published in:Adsorption : journal of the International Adsorption Society Vol. 23; no. 1; pp. 185 - 192
Main Authors: Bozbiyik, Belgin, Van Assche, Tom, Lannoeye, Jeroen, De Vos, Dirk E., Baron, Gino V., Denayer, Joeri F. M.
Format: Journal Article
Language:English
Published: New York Springer US 01.01.2017
Springer Nature B.V
Subjects:
Adsorbed water
Adsorption
Chemistry
Chemistry and Materials Science
Engineering Thermodynamics
Fixed beds
Heat and Mass Transfer
Industrial Chemistry/Chemical Engineering
Isotherms
Metal-organic frameworks
Partial pressure
Pressure effects
Shape effects
Surfaces and Interfaces
Thin Films
Water vapor
Water adsorption
MOF
Breakthrough experiments
Al-fumarate
ISSN:0929-5607, 1572-8757
Online Access:Get full text
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Summary:Adsorption of water vapour on the Al-fumarate metal–organic framework (MOF) was studied in static and dynamic conditions, by performing gravimetric and fixed bed experiments. A two-step, type IV water isotherm is obtained, which reveals the complexity and the duality of the hydrophilic/hydrophobic behaviour of this MOF. Breakthrough experiments with feed conditions corresponding to three different zones in the water adsorption isotherm were performed to study the effect of isotherm shape on the column dynamics. At low partial pressure of water in the feed, a single breakthrough step is observed while a stepped profile is observed at higher partial pressure of water. These breakthrough curves could be described qualitatively with a simple model accounting for the isotherm shape.
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ISSN:0929-5607
1572-8757
DOI:10.1007/s10450-016-9847-0