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Oxidation of Benzyl Alcohol by using Gold Nanoparticles Supported on Ceria Foam
Author(s) -
Alhumaimess Mosaed,
Lin Zhongjie,
Weng Weihao,
Dimitratos Nikolaos,
Dummer Nicholas F.,
Taylor Stuart H.,
Bartley Jonathan K.,
Kiely Christopher J.,
Hutchings Graham J.
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201100374
Subject(s) - benzyl alcohol , catalysis , cerium oxide , benzaldehyde , nanoparticle , crystallization , calcination , cerium , materials science , solvent , alcohol oxidation , colloidal gold , oxide , chemistry , chemical engineering , inorganic chemistry , organic chemistry , nanotechnology , engineering
The efficacy of using cerium oxide foams as a support for Au nanoparticles and subsequent use as oxidation catalysts have been investigated. These were synthesized using L ‐asparagine to produce a cerium coordination polymer foam, which was calcined to give the oxide foam. Au nanoparticles were supported on the CeO 2 foams using a sol‐immobilization method. The activity of the Au/foamCeO 2 for solvent‐free benzyl alcohol oxidation was superior to standard Au/CeO 2 catalysts, and the activity was found to be dependent on the crystallization time of the precursor foam. A crystallization time of 4 h was found to produce the most active catalyst, which retained activity and a high selectivity to benzaldehyde (ca. 96 %) when re‐used and this is related to the structure of the material. The high activity is attributed to the greater lability of surface oxygen in the support compared with commercial CeO 2 materials.