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AuthorSalem, Mohamed A.
AuthorSalem, Ibrahim A.
AuthorGemeay, Ali H.
Available date2015-11-05T06:57:47Z
Publication Date1994
Publication NameInternational Journal of Chemical Kinetics
ResourceWiley Online Library
CitationSalem, M. A., Salem, I. A. and Gemeay, A. H. (1994), Kinetics and mechanism of H2O2decomposition by Cu(II)-, Co(II)-, and Fe(III)-Amine complexes on the surface of Silica-Alumina (25% Al2O3). Int. J. Chem. Kinet., 26:�1055�1061
AbstractThe kinetics of the H2O2 decomposition by Cu(II)-, Co(II)-, and Fe(III)-amine complexes supported on the surface of silica-alumina (25% Al2O3) catalyst have been investigated. The decomposition process proceeded with first-order kinetics for the substrate concentration. With copper complexes, in particular, the rate of reaction decreased in the sequence: ethylenediamine (en) > monoethanolamine (mea) > triethanolamine (tea). With ethylenediamine as aligand, the rate has also decreased in the order: Cu(II) > Co(II) > Fe(III). Both of the energy and entropy of activation were found to decrease as: en > mea > tea and for one ligand (en) and different metal ions the sequence was Cu(II) > Co(II) > Fe(III). The decomposition reaction involved the formation of an intermediate active species, which converts into a peroxo-metal-complex of brown or faint red color. The rate of reaction was directly proportional to the [complex], [H2O2], and [H]?1. A mechanism describing the decomposition process is proposed.
PublisherJohn Wiley & Sons, Inc.
Chemical kinetics
TitleKinetics and mechanism of H2O2 decomposition by Cu(II)-, Co(II)-, and Fe(III)-Amine complexes on the surface of Silica-Alumina (25% Al2O3)
Issue Number11
Volume Number26

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