title: Complex kinetics and significant influences of bromine removal in ferroin-bromate-metol reaction.
abstract: This study presents a new bromate-based chemical oscillator that employs metol as the organic substrate. Complex reaction behaviors were observed when the system was subjected to bromine removal and oxygen exposure. Transitions from simple to sequential oscillations took place as a function of the age of the metol stock solution. MS spectroscopy measurements and parallel kinetic experiments with a mixture of metol and hydroquinone suggest that the decomposition of metol to hydroquinone was responsible for the observed influence of oxygen and the age of the metol solution. GS/MS and NMR measurements revealed that 1,4-benzoquinone and bromobenzoquinones were the major final products, regardless of the presence of oxygen and bromine removal. Preliminary exploration in a capillary tube showed some interesting propagating pulse behavior.
authors.affiliation: Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada.
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Jichang
authors.initials: J
authors.lastname: Wang