Journal
JOURNAL OF CATALYSIS
Volume 331, Issue -, Pages 110-117Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2015.09.004
Keywords
Polyoxometalates; Lanthanides; Aniline oxidation; Nitrosobenzene
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Funding
- Generalitat Valenciana
- FEDER [PROMETEO2/2014/010]
- MICINN and Plan E [CTQ2012-31762]
- Eusko Jaurlaritza/Gobierno Vasco [IT477-10]
- MINECO [MAT2013-48366-C2-2P]
- UPV/EHU [UFI11/53]
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In this work we demonstrate the efficiency of some dimeric [Ln(4)(H2O)(6)(beta-GeW10O38)(2)](12-) anions composed of lanthanide-stabilised dilacunary Keggin tungstogermanate fragments (beta beta-Ln(4), Ln = Dy, Ho, Er, Tm) as heterogeneous catalysts for the organic phase oxidation of aniline with hydrogen peroxide. The results obtained evidence total conversion of aniline at room temperature, as well as full selectivity towards nitrosobenzene, and the catalysts are able to retain both their activity and selectivity after several runs. Peroxopolyoxometalate intermediaries have been identified as the catalytically active species during the aniline-to-nitrosobenzene oxidation process. (C) 2015 Elsevier Inc. All rights reserved.
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