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Complex dynamical behavior in the oxidation of hydroxylamine by bromate

✍ Scribed by Lubica Adamˇíková; Tamara Vranová; Ivan Valent

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
355 KB
Volume
26
Category
Article
ISSN
0538-8066

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✦ Synopsis

Complex dynamical behavior has been observed in the oxidation of hydroxylamine by bromate in acidic sulfate medium. The reaction shows clock type kinetics in closed conditions and an aperiodic oscillations if gaseous products are removed from the system with a constant flow-rate. The reduction kinetics of bromate ions with excess hydroxylamine has been studied in the presence of ally1 alcohol. The observed pseudo-first-order rate constant kobs has been found to follow the expression

where [hydroxylamine] is total initial hydroxylamine concentration, K1 = 0.5 M-l, K2 = lo6 M-l, and k = 2.57 X lo3 M-l s-l a t 298.15 K and I = 2.0 M. The rate constant for the bromine oxidation of hydroxylamine in sulfuric aqueous solution has been determined.

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