Oscillatory oxidation

A large parameter range in which cluster patterns dominated the spatiotemporal dynamics was also observed for the oscillatory oxidation of H2 in the presence of electrosorbing cations and anions [175], Characteristically, the cluster-type patterns were found at lower concentrations of Cu2+ ions compared with the pulse-type motions shown in Fig. 56. Examples of two-phase and three-phase clusters are depicted in Fig. 63. In these figures the homogeneously oscillating mode has been subtracted. 

A.S. Tomlin, M.J. Pilling, T. Turanyi, J.H. Merkin and J. Brindley, Mechanism Reduction for the Oscillatory Oxidation of Hydrogen Sensitivity and Quasi-Steady-State Analyses, Comb, and Flame 91 (1992) 107-130. 

Nakamura et al. (1969) reported the oscillatory oxidation of NADPH in a lactoperoxidase system, and observed sustained oscillations in oxygen concentration. 

IIIG) 1969 Degn, H. Compound III Kinetics and Chemiluminescence in Oscillatory Oxidation Reaction Catalyzed by Horseradish Peroxidase, Biochem. Biophysica Acta, vol. 180, 271-290... 

IIIC) 1978 Wegmann, K., Rossler, O. E. Different Kinds of Chaotic Oscillations in the Belousov-Zhabotinskii Reaction, Z. Naturforschung A, vol. 33A, no. 10, 1170-1183 (III J) 1980 Willamowski, Rossler, O. E. Irregular Oscillations in a Realistic Abstract Quadratic Mass Action System, Z, Naturforsch., vol. 35a, 317-318 (IIIG) 1965 Yamazaki, L., Yokoya, K., Nakajima, R. Oscillatory Oxidations of Reduced Pyridine Nucleotide by Peroxidase, Biochim. Biophys. Res. Commun., vol. 21, 582-586 (IIIG) 1967 Yamazaki, I., Yokota, K. Analysis of the Conditions Causing the Oscillatory Oxidation of Reduced Nicotinamide-Adenine Dinucleotide by Biochem. Biophys. Acta, vol. 132, 310-320... 

Sales et al. (1982) presented a simple physical model to explain oscillatory oxidation of carbon monoxide over Pt, Pd, and Ir catalysts. The model is based on a kinetic model incorporating a Langmuir-Hinshelwood reaction mechanism and the alternate oxidation and reduction of the catalyst. Simulation results of these three coupled differential equations (of oxidation of CO) model are shown to fit experimental observations. 

IIIE) Sales, B. C., Turner, J. E., Maple, M. B. Oscillatory Oxidation of Carbon Monoxide... 

Yamazaki, I., K. Yokota R. Nakajima. 1965. Oscillatory oxidations of reduced pyridine nucleotide by peroxidase. Biochem. Biophys. Res. Commun. 21 582-6. 

Sheintuch and Schmitz have thoroughly reviewed oscillatory oxidation reactions up to 1977. A year later another review was published by Slinko and Slinko. Varghese et al. reported oscillations in the rate of CO2 production during the oxidation of CO over Pt supported on 7-AI2O3 catalyst between... 

A large amount of theoretical and experimental work has been reported in the literature on oscillatory oxidation reactions over noble metal catalysts. Several models have been proposed to account qualitatively for these... 

Bornmann, L., Busse, H. and Hess, B. (1973a). "Oscillatory oxidation of malonic acid by bromate. 1. Thin-layer chromatography." Z. Naturforsch. 28b. 93-97. 

The oscillatory oxidation of 1,4-cyclohexanedione by BrOj" ion resulted in the formation of CO2 and the ring-opening products 5-(dibromomethylene)-2(5 -furanone, ( )-5,5,5-tribromo-4-oxo-2-pentenoic acid, and dibromoacetic acid. ... 

In a recent publication reviewing the status of research into intrinsic oscillations in solid-catalyzed reactions (l ), we emphasized the potential exploitation of combined theoretical and experimental studies of oscillatory behavior for obtaining new insights into catalytic reaction mechanisms and kinetics. In the present paper, we elaborate further on the subject of formulating and analyzing kinetic models which account for oscillatory behavior, and we present some new experimental information for the oscillatory oxidation of CO on a platinum foil. As in reference 1, the analysis here is applied to models describable by two first-order differential equations. The laboratory data reported were obtained from an isothermal gradientless CSTR of void volume h60 cm3 into which there was inserted a platinum foil of area 200 cm2. Continuous measurements were made of the CO2 concentration in the effluent stream. The experimental system is described in detail elsewhere (, . ... 

Szab6, Z.G. Kinetic characterization of complex reaction systems. In Bamford, C.H., Tipper, C.F.H. (eds.) Comprehensive Chemical Kinetics, vol. 2, pp. 1-80. Amsterdam, Elsevier (1%9) Tomlin, A.S., Pilling, M.J., Turanyi, T., Merkin, J.H., Brindley, J. Mechanism reduction for the oscillatory oxidation of hydrogen sensitivity and quasi-steady-state analyses. Combust. Flame 91, 107-130 (1992)... 

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