Theoretical and experimental studies of spatial bistability in the chlorine-dioxide-iodide reaction

被引:44
作者
Blanchedeau, P [1 ]
Boissonade, J [1 ]
De Kepper, P [1 ]
机构
[1] CNRS Bordeaux, Ctr Rech Paul Pascal, F-33600 Pessac, France
关键词
nonequilibrium chemical patterns; dissipative structures; nonlinear dynamics; bistability; oscillating reactions;
D O I
10.1016/S0167-2789(00)00169-X
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The phenomenon of spatial bistability has recently been proposed to understand a number of paradoxical results obtained in experiments on nonequilibrium chemical patterns performed in open reactors made of a thin film of gel fed from one side. On the basis of a realistic kinetic model, we predict that the chlorine-dioxide-iodide reaction, taken as a prototypic example of a large class of reactions, should exhibit spatial bistability. The theoretical and numerical results are supported by experiments performed in specially designed reactors. This spatial bistability introduces an additional geometric dimension in the system which is generally overlooked. We elaborate on the role that this additional complexity can play in the observation of patterns associated to fronts in such reactors. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:283 / 299
页数:17
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