物理化学学报 >> 1989, Vol. 5 >> Issue (01): 44-49.doi: 10.3866/PKU.WHXB19890110

研究论文 上一篇    下一篇

搅拌对Belousov-Zhabotinskii振荡反应的影响及反应机理研究

李京;李如生   

  1. 清华大学化学系,北京
  • 收稿日期:1987-06-06 修回日期:1988-02-06 发布日期:1989-02-15
  • 通讯作者: 李如生

Study of the Effects of Stirring on Belousov-Zhabotinskii Osciliating Reaction and its Mechanism

Li Jing;Li Ru-Sheng   

  1. Department of Chemistry, Tsinghua Universtiy, Beijing
  • Received:1987-06-06 Revised:1988-02-06 Published:1989-02-15
  • Contact: Li Ru-Sheng

摘要: 研究了非流动条件下搅拌对B-Z振荡反应的影响。实验发现即使在氮气保护下, 搅拌仍对振荡行为(振幅和周期等)有明显影响。为解释搅拌的影响作用, 对B-Z反应的Oregonator模型作了修正和补充并依据非平衡态热力学的一般原理将搅拌影响唯象地归结为反应速率常数的相对变化。修正后的模型不仅较好地克服了原模型存在的一些问题, 而且在引入搅拌作用以后得到了与实验现象定性一致的数值模拟结果。

Abstract: The effects of stirring on the oscillations of the ferrion-catalyzed and ceriumcatalyzed B-Z reactions are investigated in the stirred batch reactor. The experimental results show that the oscillatory behavours (period, amplitude etc.) are sensitive to the rate of stirring even in the nitrogen atmosphere and the stirring effects are different for ferrion-catalyzed and cerium-catalyzed reactions. We believe that such stirring effects reflect the interference between chemical reactions and transport processes. The inert salt which does not take part in the reaction may also effect the oscillations.
Some shortcomings in present ....