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Cyclohexane and toluene oxidation catalyzed by 1,10-phenantroline Cu(II) complexes

Paper ID Volume ID Publish Year Pages File Format Full-Text
42576 45931 2009 6 PDF Available
Title
Cyclohexane and toluene oxidation catalyzed by 1,10-phenantroline Cu(II) complexes
Abstract

In this work, we present the cyclohexane oxidation catalyzed by the mononuclear 1,10-phenantroline Cu(II) complexes: [Cu(phen)3]Cl2·7H2O (1), [Cu(phen)2Cl]Cl·5H2O (2), [Cu(phen)Cl2] (3), using hydrogen peroxide as oxidant, in acetonitrile:water (3.5:1) solution. The reactions were carried out at temperatures ranging from 25 °C to 70 °C. All complexes were able to oxidize cyclohexane into cyclohexanol and cyclohexanone with low to moderate yields. Adipic acid was also formed in the reaction. The highest conversion was obtained with the system [Cu(phen)2Cl]Cl/H2O2/70 °C, with 67% total yield. Furthermore, these complexes were also able to oxidize toluene at room temperature.

Graphical abstractMononuclear 1,10-phenantroline Cu(II) complexes: [Cu(phen)3]Cl2·7H2O (1), [Cu(phen)2Cl]Cl·5H2O (2), [Cu(phen)Cl2] (3) were used to oxidize cyclohexane, using hydrogen peroxide as oxidant. All complexes were able to produce cyclohexanol and cyclohexanone with low to moderate yields. Adipic acid was also formed in the reaction. The highest conversion was obtained with the system [Cu(phen)2Cl]Cl at 70 °C, with 67% of total yield. It was also possible to relate the catalytic activity in cyclohexane oxidation, as well as toluene oxidation, with the redox properties of the complexes: the most easily reducible, being also the most active.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Selective cyclohexane oxidation; Mononuclear Cu(II) complexes; 1,10-Phenantroline; Peroxides; Cyclic voltammetry
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Cyclohexane and toluene oxidation catalyzed by 1,10-phenantroline Cu(II) complexes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 365, Issue 2, 31 August 2009, Pages 281–286
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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