Mechanism of Ru(III)-catalyzed oxidation of L-cystine by Ce(IV) ions in sulphuric acid medium

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dc.contributor.authorOwalude, S. O.
dc.contributor.authorOdebunmi, E. O.
dc.contributor.authorBamigboye, C.A.
dc.contributor.authorAdebayo, A.B.
dc.date.accessioned2019-10-30T11:55:20Z
dc.date.available2019-10-30T11:55:20Z
dc.date.issued2018-12-18
dc.description.abstractMechanism of oxidation of L-cystine by acidic solution of Ce(IV) ions in the presence of Ru(III) ions as homogeneous catalyst was studied using kinetic approach. A first-order dependence of the reaction rate on [cystine] and [Ce(IV)] was observed. The rate is inversely proportional to [H+] and decreased with increasing ionic strength of the medium. The active species of the oxidant in sulphuric acid medium and that of the catalyst were Ce(SO4)2 and [RuCl2(H2O)4]+ respectively. A suitable mechanism based on the kinetic data is proposed. The activation parameters and the thermodynamic quantities were also evaluated which supported the proposed mechanisms.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/3175
dc.language.isoenen_US
dc.publisherUniversity of Nigeria, Nsukka, Nigeriaen_US
dc.subjectActivation parametersen_US
dc.subjectcerium(IV) ionsen_US
dc.subjectkineticsen_US
dc.subjectL-cystineen_US
dc.subjectruthenium(III) chlorideen_US
dc.titleMechanism of Ru(III)-catalyzed oxidation of L-cystine by Ce(IV) ions in sulphuric acid mediumen_US
dc.typeArticleen_US

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