A new system for studying spatial front instabilities: the supercatalytic chlorite-trithionate reaction.
A new system for studying spatial front instabilities: the supercatalytic chlorite-trithionate reaction.
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DOI：
10.1021/jp410470r
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发表时间：
2014-02
期刊：
影响因子：
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通讯作者：
György Csekő;Lin Ren;Yang Liu;Q. Gao;A. Horváth
中科院分区：
文献类型：
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作者：
György Csekő;Lin Ren;Yang Liu;Q. Gao;A. Horváth
We show that the chlorite-trithionate reaction is "supercatalytic"; i.e., the formal kinetic order of the autocatalyst H(+) is 2. A simple model is proposed and discussed to describe the unusual concentration dependencies of one-dimensional front propagation found experimentally. It is also demonstrated that at relatively wide concentration ranges the linear two-dimensional front initiated loses its stability, giving rise to an appearance of cellular structures in a convection-free system. Compared to the chlorite-tetrathionate reaction, however, this system is much more stable at alkaline conditions, even for hours; therefore, no side reactions can be taken into consideration to check whether they may have any side effects on the evolution of spatiotemporal structures.
