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Biphasic Aerobic Oxidation of Alcohols Catalyzed by Poly(ethylene glycol)‐Stabilized Palladium Nanoparticles in Supercritical Carbon Dioxide
Author(s) -
Hou Zhenshan,
Theyssen Nils,
Brinkmann Axel,
Leitner Walter
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200461493
Subject(s) - ethylene glycol , supercritical carbon dioxide , catalysis , supercritical fluid , palladium , chemistry , nanoparticle , ethylene , carbon dioxide , dispersion (optics) , peg ratio , alcohol oxidation , inorganic chemistry , materials science , chemical engineering , organic chemistry , nanotechnology , physics , optics , finance , engineering , economics
Active, selective, and stable : The combination of poly(ethylene glycol) (PEG) as a catalyst phase and supercritical carbon dioxide (scCO 2 ) as a mobile phase provides a “green” approach to the continuous‐flow aerobic oxidation of primary and secondary alcohols by catalytically active palladium nanoparticles (see scheme). The activity of the system even slightly increases with reaction time, because CO 2 appears to improve the dispersion of the Pd particles in the PEG matrix.