Chlorite - Iodide Reaction : A Versatile System for the Study of Nonlinear Dynamicai Behavior
نویسندگان
چکیده
The autocatalytic reaction between chlorite and iodide ions exhibits a remarkable range of dynamical behavior. In a stirred tank reactor it shows bistability between steady states and between a steady and an oscillatory state. It forms the core of a large family of systematically designed chemical oscillators. The chlorite-iodide system has served as the prototype reaction in the discovery and investigation of mixing effects in stirred tank reactors, in studies of coupled oscillators, and in new experimental approaches to spatiotemporal bifurcation behavior. Mechanistic studies of the system have resulted in an eight-step mechanism that gives excellent agreement with nearly all the above observations.
منابع مشابه
Infrared Spectrum of the Fundamental Vibratlon - Rotation Band of ' E - OH +
tween steady and oscillatory states, and marked sensitivity to stirring rate. Thiocyanate shows none of these features. A mechanistic explanation of the chlorite-bromide oscillations seems within reach given the reactions's similarity to the chlorite-iodide reaction and the success of numerical simulations' ' , 1 2 of batch behavior in the chlorite-bromide system. In contrast, very little is kn...
متن کاملSpectrophotometric Simultaneous Kinetic Determination of Iodide and Iodate Using Partial Least-Squares Calibration Method in a Single Kinetic Run
A rapid, sensitive and versatile kinetic method is presented for the simultaneous spectrophotometric determination of iodide and iodate by partial least-squares regression (PLS) using original and derivate data named as absorbance and rate data. The method is based on the catalytic effect of the cited anions on the reaction rate between Ce(IV) and As(III) in 2 mol l?1 sulfuric acid medium. The ...
متن کاملRate Constants for Reactions between Iodine- and Chlorine-Containing Species: A Detailed Mechanism of the Chlorine Dioxide/Chlorite-Iodide Reaction†
The chlorite-iodide reaction is unusual because it is substrate-inhibited and autocatalytic. Because analytically pure ClO2 ion is not easily prepared, it was generated in situ from the rapid reaction between ClO2 and I-. The resulting overall reaction is multiphasic, consisting of four separable parts. Sequentially, beginning with mixing, these parts are the (a) chlorine dioxide-iodide, (b) ch...
متن کاملThe Chlorate-Iodine-Nitrous Acid Clock Reaction
A new clock reaction based on chlorate, iodine and nitrous acid is presented. The induction period of this new clock reaction decreases when the initial concentrations of chlorate, nitrous acid and perchloric acid increase, but it is independent on the initial iodine concentration. The proposed mechanism is based on the LLKE autocatalytic mechanism for the chlorite-iodide reaction and the initi...
متن کاملMagneto Prandtl nanofluid past a stretching surface with non-linear radiation and chemical reaction
In this article, we examined the behavior of chemical reaction effect on a magnetohydrodynamic Prandtl nanofluid flow due to stretchable sheet. Non-linear thermally radiative term is accounted in energy equation. Constructive transformation is adopted to formulate the ordinary coupled differential equations system. This system of equations is treated numerically through Runge Kutta Fehlberg-45 ...
متن کامل