迁移驱动的亚氯酸盐-连四硫酸盐反应中的不稳定性。

Migration-driven instability in the chlorite-tetrathionate reaction.

作者信息

Viranyi Zsanett, Horvath Dezsó, Tóth Agota

机构信息

Department of Physical Chemistry, University of Szeged, P.O. Box 105, Szeged, H-6701 Hungary.

出版信息

J Phys Chem A. 2006 Mar 16;110(10):3614-8. doi: 10.1021/jp056084l.

DOI:10.1021/jp056084l

PMID:16526642

Abstract

We have studied the lateral stability of planar reaction-diffusion fronts in an autocatalytic reaction between aqueous ions in an externally imposed electric field. In our experiments, migration drives the pattern formation leading to cellular structures where the sufficiently greater migrational flux of the reactant with respect to that of the autocatalyst is the driving force. The difference in electric field strength between the two sides of the thin reaction front results from the significant increase in conductivity during the reaction. The results of the theoretical analysis based on the empirical rate-law model of the reaction reproduce the behavior observed experimentally.

摘要

我们研究了在外部施加电场中，水合离子间自催化反应中平面反应扩散前沿的横向稳定性。在我们的实验中，迁移驱动图案形成，导致细胞结构，其中反应物相对于自催化剂足够大的迁移通量是驱动力。薄反应前沿两侧电场强度的差异是由于反应过程中电导率的显著增加所致。基于该反应的经验速率定律模型的理论分析结果重现了实验观察到的行为。