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Adsorption and differential heats of adsorption of normal and iso-butane on zeolite MFI

Title
Adsorption and differential heats of adsorption of normal and iso-butane on zeolite MFI
Type
Article in International Scientific Journal
Year
2006
Authors
Alexandre Ferreira
(Author)
Other
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Mittelmeijer Hazeleger, MC
(Author)
Other
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Bliek, A
(Author)
Other
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Journal
Vol. 91
Pages: 47-52
ISSN: 1387-1811
Publisher: Elsevier
Indexing
Other information
Authenticus ID: P-008-PEH
Abstract (EN): Adsorption of n- and i-butane on zeolite MFI (silicalite type) at different temperatures has been investigated using a manometric technique combined with a micro-calorimeter. The Langmuir model can describe the isotherms for both components. The derived thermodynamic properties are in agreement with the literature data from other techniques. The differential heats of adsorption when plotted against loading present an initial plateau; followed by a slow rise, which can be attributed to adsorbate-adsorbate interactions. For i-butane these adsorbate-adsorbate interactions give rise to a sharp peak in heat of adsorption versus loading, at 0.6 mmol/g. A decrease at higher loadings on the heat of adsorption is observed for both isomers, this is attributed to surface adsorption.
Language: English
Type (Professor's evaluation): Scientific
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