Palladium supported on chitosan as a recyclable and selective catalyst for the synthesis of 2-phenyl ethanol

Two different chitosan supported palladium based catalysts were prepared, wherein dispersed palladium nanoparticles were obtained via chemical reduction supported on chitosan (Pd/CTS) and amine functionalized modified chitosan (Pd/AFCTS). The catalytic activity of the Pd-based catalysts, Pd/CTS and...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2012-03, Vol.41 (1), p.291-2917
Main Authors: Dabbawala, Aasif A, Sudheesh, N, Bajaj, Hari C
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Chemistry Techniques, Synthetic - methods
Chitosan
Chitosan - chemistry
Dispersion
Ethanol
Ethyl alcohol
Hydrogen - chemistry
Palladium
Palladium - chemistry
Phenylethyl Alcohol - chemical synthesis
Pressure
Recycling
Selectivity
Solvents - chemistry
Styrenes
Substrate Specificity
Temperature
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Summary:Two different chitosan supported palladium based catalysts were prepared, wherein dispersed palladium nanoparticles were obtained via chemical reduction supported on chitosan (Pd/CTS) and amine functionalized modified chitosan (Pd/AFCTS). The catalytic activity of the Pd-based catalysts, Pd/CTS and Pd/AFCTS, were assessed in the hydrogenation of styrene oxide to 2-phenyl ethanol. Both Pd-based catalysts enhanced the formation of the desired 2-phenyl ethanol in contrast to a conventional Pd/C catalyst without the assistance of inorganic or organic base. A considerable influence on the conversion and selectivity was observed in the case of Pd/AFCTS, consisting of palladium nanoparticles stabilized and dispersed on amine-functionalized chitosan matrix, affording complete conversion of styrene oxide with 98% selectivity to 2-phenyl ethanol. The catalystPd/AFCTS has also been recycled without significant loss of activity and selectivity. Chitosan and aminofunctionalized chitosan supported palladium nanoparticles have been synthesized and were found to be an efficient catalyst for the hydrogenation of styrene oxide to 2-phenyl ethanol.
ISSN:1477-9226
1477-9234
DOI:10.1039/c2dt11924b