The effect of alpha-terpineol on the hydration of alpha-pinene over zeolites dispersed in polymeric membranes

Authors
Vital, J Ramos, AM Silva, IF Castanheiro, JE
Citation
J. Vital et al., The effect of alpha-terpineol on the hydration of alpha-pinene over zeolites dispersed in polymeric membranes, CATAL TODAY, 67(1-3), 2001, pp. 217-223
Citations number
11
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CATALYSIS TODAY
ISSN journal
09205861 → ACNP
Volume
67
Issue
1-3
Year of publication
2001
Pages
217 - 223
Database
ISI
SICI code
0920-5861(20010515)67:1-3<217:TEOAOT>2.0.ZU;2-H
Abstract
The hydration of ol-pinene over catalytic PDMS membranes loaded with a USY zeolite is studied. The concentration profiles of reagent and products exhi bited a pronounced initial induction period followed by a rapid increase of the reaction rate, suggesting an autocatalytic behaviour. The effects of t he main reaction product, ol-terpineol, on the membrane transport propertie s are investigated. A simple diffusion-kinetic model which fits experimental concentration data quite well has been developed. (C) 2001 Elsevier Science B.V. All rights r eserved.