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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2386
Title: Oxidation of styrene over polymer- and nonpolymer-anchored Cu(II) and Mn(II) complex catalysts
Authors: Sharma S.
Sinha, Shishir N.
Biswas, Prakash
Maurya, Mannar Ram
Chand S.
Published in: Journal of Applied Polymer Science
Abstract: Catalytic oxidation of styrene was investigated over polymer- and nonpolymer-anchored Cu(II) and Mn(II) complex catalysts prepared by schiff base tridentate ligands. The effect of temperature, styrene to H2O 2 mole ratio and catalyst amount on the catalytic activity and product selectivity was investigated. Further, the catalysts were characterized by various techniques, such as elemental analysis, atomic absorption spectroscopy (AAS), FTIR, FE-SEM, EDAX, TGA, and UV-vis spectrophotometer. The elemental analysis, EDAX and AAS results confirmed the formation of Cu(II) and Mn(II) complexes, and it was found that the metal loading in the polymer-anchored complex catalysts were in the range of 0.53-3.74 %. FTIR results showed the co-ordination bond formation between the polymer ligands and metal ion. The catalytic data showed that, over all the catalysts, the main reaction products were benzaldehyde, styrene oxide, and benzoic acid. The polymer-anchored complex catalysts were found to be much more active when compared with nonpolymer-anchored catalysts. The maximum conversion of styrene (92.3%) was obtained over PS-[Cu(Hfsal-aepy)Cl] catalyst with benzaldehyde selectivity to 69% at the styrene to H2O2 mole ratio of 1: 4 at 75°C. Although the PS-[Mn(Hfsal-aepy)Cl] catalyst was less active, it was highly selective to benzaldehyde. Copyright © 2012 Wiley Periodicals, Inc.
Citation: Journal of Applied Polymer Science (2013), 127(5): 3424-3434
URI: https://doi.org/10.1002/app.37557
http://repository.iitr.ac.in/handle/123456789/2386
Issue Date: 2013
Keywords: catalysts
catalytic activities
heterogeneous polymers
recycling
styrene oxidation
supports
ISSN: 218995
Author Scopus IDs: 57210179849
7403739121
56220905200
7005255411
7102245914
Author Affiliations: Sharma, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Sinha, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Biswas, P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Maurya, M.R., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Chand, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Corresponding Author: Sinha, S.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India; email: shishir@iitr.ernet.in
Appears in Collections:Journal Publications [CH]

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