Title: A study of V-pillared layered double hydroxides as catalysts for the epoxidation of terpenic unsaturated alcohols
Authors: Villa, AL ×
De Vos, Dirk
Verpoort, F
Sels, Bert
Jacobs, Pierre #
Issue Date: 2001
Series Title: Journal of catalysis vol:198 issue:2 pages:223-231
Conference: date:Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, B-3001 Louvain, Belgium; State Univ Ghent, Dept Inorgan & Phys Chem, B-9000 Ghent, Belgium
Abstract: Mg,Al-Layered double hydroxides (LDHs) are pillared with vanadium under mildly acidic conditions. Via XRD, Raman, and IR characterization, it is confirmed that the material is a phase-pure LDH with decavanadate (V10O286-) anions between the brucite sheets. This V-10-LDH has the highest activity for the epoxidation of geraniol when used with tert-butyl hydroperoxide as the oxidant in anhydrous toluene. In a series of tests, the possible release of catalytically active dissolved V from the catalyst is investigated. Under all conditions tested, V-10-LDH behaves as a heterogeneous catalyst, in contrast with some other tested V-containing materials (e.g., VAPO-5, or V in a siliceous matrix). Regioselectivity in the epoxidation of geraniol evidences the coordination of the alcohol group of geraniol on the active V center. Finally, it is demonstrated that the V-10-LDH catalyst can be applied to the epoxidation of a series of allylic and homoallylic alcohols, mostly of terpene origin. (C) 2001 Academic Press.
ISSN: 0021-9517
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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