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Palladium‐Supported Nanoceria: A Highly Efficient Catalyst for Solvent‐Free Selective Oxidation of Ethylbenzene to Acetophenone
Author(s) -
Kalita Lisamoni,
Saikia Lakshi
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202001079
Subject(s) - ethylbenzene , acetophenone , catalysis , palladium , chemistry , selectivity , mesoporous material , solvent , nanocomposite , organic chemistry , inorganic chemistry , materials science , nanotechnology
The benzylic C−H oxidation of ethylbenzene, a toxic petroleum waste, to high value‐added acetophenone is a fundamental yet important chemical transformation. Herein, palladium nanoparticles were immobilized on a highly mesoporous CeO 2 surface for enhancing the catalytic activity. The Pd/CeO 2 nanocomposite was employed in the benzylic C−H oxidation of ethylbenzene under solvent‐free conditions and using tert‐butyl hydroperoxide as oxidant which displayed high conversion of 99.8% and a selectivity of 79% towards acetophenone. Moreover, the Pd/CeO 2 catalysts were highly stable and could be recycled up to the fifth catalytic cycle without remarkable loss in its catalytic activity.