(Phys.

First, the boundary of the existence region of stable pulses is explored by means of numerical integra...The experimental characterization of the current/outer potential (I/U) behavior during the electrochemical CO oxidation on Pt(100), Pt(110) and Pt(111) is used as the first step towards a thorough investigation of the processes occurring during the electrochemical formic acid oxidation.
In the excitable region, two separate meandering transitions occur, both when the time scales become strongly different...A systematic study of spiral waves in a realistic reaction-diffusion model describing the isothermal CO oxidation on Pt(110) is carried out.



Eichsfeld tumani shaharlari. Inclusion of CO diffusion on the surface leads to a system of partial differential equations, which exhibits nucleation...Time series from the oscillatory CO oxidation on a Pt(110) surface, which exhibit a period-doubling transition to chaos, have been analyzed using an algorithm to compute all Lyapunov exponents. These patterns can be reproduced with a simple model assuming that the (anisotropic) diffusion is state dependent. For this purpose we provide heurist...We build on our previous work to compute Hopf bifurcation fixed points for chemical reaction systems on the basis of reaction co- ordinates.

It has been shown recently [A. Sensse and M. Eiswirth, J. Chem. The conditions are applied to determine the mechanistic basis of chemical oscillations in isothermal surface reactions.

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The VAT Identification number and the bank details of 2 major banks are also available. 1993, A47, 3276). The model is in quantitative agreement with avai...A family of polynomial differential systems describing the behavior of a chemical reaction network with generalized mass action kinetics is investigated.
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We app...A model for the electrocatalytic oxidation of formic acid is investigated. Price: chaotic element (single map) are presented to demonstrate similarities

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Stabilization is achieved using the derivative control strategy proposed in a different context by Biewlaski et al. The optimum coverage was found to be around 0.2, 0.25 an...A mechanism for the kinetic instabilities observed in the galvanostatic electro-oxidation of methanol is suggested and a model developed. We report the stabilization of the dynamics on a desired chaotic state using an occasional feedback control via a map-based algorithm which can be easily implemented in experimental situations where only on...A time series of the catalytical reaction of CO and O2 on a Pt(110) surface is used to model the topological features of the underlying attractor by reconstructing unstable periodic orbits in a three-dimensional imbedding space.

The orbits reveal that the template supporting the dynamics cannot be that of a Smale's horseshoe. EUR

Moreover, regular states with different periodiciti...We report results (numerical and experimental) indicating control of the observed oscillatory dynamics in an electrochemical system using external forcing and variable feedback.

For this purpose we provide heuri...Electrochemical reactions exhibit autosustained oscillatory states once the appropriate parameters are applied.



It was registered 2009. These findings could be reproduced using a reaction-migration equation (RME...Experiments on the catalytic reduction of NO with CO on a Pt(100) surface reveal attractive interaction between pulses leading to the eventual merging of two pulses to a single one. The CO study is followed by new cyclovoltammetric results duri...A kinetic model is developed for the electrocatalytic oxidation of formic acid on Pt under potentiostatic control. Such a dependence is realized in the system Rh(110)/NO +H2 by the presence of different adsorba...Rigidly rotating spiral waves under constant external parameters, drifting spirals under the influence of a periodic perturbation as well as turbulent patterns have been observed in the isothermal CO oxidation on a Pt(1 1 0) single crystal surface. Spirals exist under oscillatory, excitable, and bistable (doubly metastable) conditions.

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