BZ反应系非理想性对化学振荡动力学区域的影响

基于Debye-Huckel强电解质溶液活度系数理论、反应速度的活化络合物理论以及三变量微分方程奇点理论,探讨了非理想性对BZ反应体系振荡动力学区域的影响。以Oregonator为模型建立了均匀体系非理想BZ反应的系统动力学方程,计算并绘制了化学振荡的临界"溴酸钠浓度-离子强度"阈值图谱,划分了不同的动力学区域,并进行了一系列实验研究,得到了与理论分析一致的结论.

Effect of Nonideality on Chemical Oscillatory Dynamical Regime of Belousov-Zhabotinskii Reaction System

Based on the Debye-Hükel activity coefficient theory of electrolyte solution, the activated complex theory of reaction rate and the singular theory of three variables differential equation, a series of theoretic investigation of BZreaction reported in this paper is devoted to explore the influence of the nonideality on chemical oscillatory dynamical regime. Using the Oregonator Model, a systematic dynamics of the nonideal homogeneous BZ reaction system is proposed. The threshold of chemical oscillation is calculated and then the critical diagram "concentration of NaBrO₃-ionic strength" has been drawn. By means of it the regime of oscillation could be fixed quantitatively. Aset of experiments has also been done. The results is in accordance with the theoretical conclusions.