Chitin and Chitosan anchored methyltrioxorhenium: an innovative approach for selective heterogeneous catalytic epoxidations of olefins
Author(s)
Di Giuseppe, Andrea
Crucianelli, Marcello
Passacantando, Maurizio
Nisi, Stefano
Saladino, Raffaele
Date Issued
2011
Type
Article
Abstract
Novel complexes between methyltrioxorhenium (MTO) and natural polysaccharides like chitin and chitosan, or modified chitosan-bearing N-substituted acyl or alkyl pyridine moieties, were synthesized and used for the oxidation of alkenes, including acid-sensitive styrene derivatives, with urea hydrogen peroxide adduct (UHP) as primary oxidant. High conversions and yields of the corresponding epoxides were obtained. Silica-chitosan hybrid composites with increased surface area and mechanical properties were also prepared and used as MTO supports. A correlation on the role played by the different MTO-coordinating ligand sites of supports, on the experimental outcome of olefin catalytic oxidations, is discussed.
Additional information
L'articolo รจ disponibile sul sito dell'editore: http://www.sciencedirect.com
Citation
Di Giuseppe, A. et al. 2010. Chitin and Chitosan anchored methyltrioxorhenium: an innovative approach for selective heterogeneous catalytic epoxidations of olefins. "Journal of Catalysis" 276(2): 411-422.
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