Zhang Jinzhong, Zhou Luqun, Ouyang Qi
Department of Physics, The Beijing-Hong Kong-Singapore Joint Center for Nonlinear and Complex Systems, Peking University, Beijing 100871, People's Republic of China.
J Phys Chem A. 2007 Feb 15;111(6):1052-6. doi: 10.1021/jp0665978. Epub 2007 Jan 24.
We report the temperature effect on the propagation of excitable traveling waves in a quasi-two-dimensional Belousov-Zhabotinsky reaction-diffusion system. The onset of excitable waves as a function of the sulfuric acid concentration and temperature is identified, on which the sulfuric acid concentration exhibits an Arrhenius dependence on temperature. On the basis of this experimental data, the activation energy of the self-catalyzed reaction in the Oregonator model is estimated to be 83-113 kJ/mol, which is further supported by our numerical simulations. The estimation proceeds without analyzing detailed reaction steps but rather through observing the global dynamic behaviors in the BZ reaction. For a supplement, the wave propagation velocities are calculated based on our results and compared with the experimental observations.
我们报告了温度对准二维贝洛索夫-扎博廷斯基反应扩散系统中可激发行波传播的影响。确定了作为硫酸浓度和温度函数的可激发波的起始，其中硫酸浓度对温度呈现阿仑尼乌斯依赖性。基于这些实验数据，俄勒冈振子模型中自催化反应的活化能估计为83 - 113 kJ/mol，这得到了我们数值模拟的进一步支持。该估计过程不是通过分析详细的反应步骤，而是通过观察BZ反应中的全局动态行为来进行的。作为补充，根据我们的结果计算了波传播速度，并与实验观测结果进行了比较。
