Browsing by Author "Adebayo, A.B."

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    Massive subgalealhaematoma in 5-year-old child
    (Niger J Paed Published by the Paediatric Association of Nigeria., 2013) Adeboye, A.A. M.A.N. :; Adegboye, O. A.; Yusuf, A.S.; Saka, A.O.; Akintola, M.A.; Ayeni, A.S.; Adebayo, A.B.; Olorunsola, S S.; Buhari, T T.
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    Mechanism of Ru(III)-catalyzed oxidation of L-cystine by Ce(IV) ions in sulphuric acid medium
    (University of Nigeria, Nsukka, Nigeria, 2018-12-18) Owalude, S. O.; Odebunmi, E. O.; Bamigboye, C.A.; Adebayo, A.B.
    Mechanism 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.