Efficient Removal of Polymerization Inhibitors by Adsorption on the Surface of an Optimized Alumina

tert-Butylcatechol (TBC) is an efficient inhibitor of parasitic polymerization of many monomers during their transportation and storage. Just before the monomers are used, removal of the inhibitor is often necessary and can easily be achieved by adsorption on alumina. The influence of the main physi...

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Bibliographic Details
Published in:Langmuir 1999-08, Vol.15 (18), p.5932-5936
Main Authors: Nédez, Christophe, Ray, Jean-Louis
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Solid-liquid interface
Surface physical chemistry
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Summary:tert-Butylcatechol (TBC) is an efficient inhibitor of parasitic polymerization of many monomers during their transportation and storage. Just before the monomers are used, removal of the inhibitor is often necessary and can easily be achieved by adsorption on alumina. The influence of the main physical parameters of the alumina on its performance has been particularly studied. The accessibility of the TBC molecule into the internal porous network of the alumina beads or extrudates appears to be the key parameter, clearly more than the specific surface area. Procatalyse's specially optimized Spheralite 538E performs particularly well in removing TBC from hydrocarbon streams.
ISSN:0743-7463
1520-5827
DOI:10.1021/la981271e