title: Palladium supported on chitosan as a recyclable and selective catalyst for the synthesis of 2-phenyl ethanol.
abstract: 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 catalyst Pd/AFCTS has also been recycled without significant loss of activity and selectivity.
authors.affiliation: Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR-CSMCRI), G B Marg, Bhavnagar, Gujarat, India.
authors.forename: Aasif A
authors.initials: AA
authors.lastname: Dabbawala
authors.forename: N
authors.initials: N
authors.lastname: Sudheesh
authors.forename: Hari C
authors.initials: HC
authors.lastname: Bajaj
mesh_terms: D002384:Catalysis; D060326:Chemistry Techniques, Synthetic / Q000379:methods*; D048271:Chitosan / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry; D010165:Palladium / Q000737:chemistry*; D010626:Phenylethyl Alcohol / Q000138:chemical synthesis*; D011312:Pressure; D059027:Recycling; D012997:Solvents / Q000737:chemistry; D013379:Substrate Specificity; D013696:Temperature
chemical_list: D012997:Solvents; D010165:Palladium; D006859:Hydrogen; D048271:Chitosan; D010626:Phenylethyl Alcohol