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- W2077258296 abstract "Abstract The oxidation of hydrazine by tris(1,10-phenanthroline)iron(III) in acidic medium shows first order kinetics in the oxidant, FeIII(phen)33+. With respect to N2H4 saturation kinetics, consistent with reactant association (small k-values) prior to the redox step, has been observed. Irreversible decomposition of FeII(phen)32+ and FeIII(phen)33+ cause unwanted interference in the latter stages of the reaction. An increase of [H+] has a decreasing effect on the rate of the N2H4 oxidation by FeIII(phen)33+ and a value of Ka1 = 0.42 ± 0.05 M (pKa1 = 0.38) at μ = 1.0 M with N2H5+ the more reactive species has been obtained. Activation parameters, applicable to the specific experimental conditions, for the oxidation of hydrazine by FeIII(phen)33+ have been determined as Δ H ‡ = 69 ± 6 kJ mol−1 and Δ S ‡ = −53 ± 20 J K−1 mol−1. A study of the decomposition of FeII(phen)32+ and FeIII(phen)33+ have also been performed to quantify the effect of these decomposition reactions on the oxidation rate of the hydrazine. The rate of decomposition of the FeII(phen)32+ and FeIII(phen)33+ are ca 50 and 75 fold slower than the N2H4 induced reduction of the tris(1,10-phenanthroline)iron(III)." @default.
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- W2077258296 date "2014-10-01" @default.
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- W2077258296 title "A kinetic study of the oxidation of hydrazine by tris(1,10-phenanthroline)iron(III) in acidic medium" @default.
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- W2077258296 doi "https://doi.org/10.1016/j.poly.2014.06.031" @default.
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