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化学学报
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化学学报 ›› 1998, Vol. 56 ›› Issue (10): 973-978. 上一篇    下一篇

研究论文

DL－苹果酸－丙酮－BrO~3^-－Mn^2^+－H~2SO~4化学振荡 反应诱导期的新特征 及其动力学研究

安从俊;甘南琴;刘义;李俊峰;林智信   

  1. 武汉大学化学系.武汉(430072)
  • 发布日期:1998-10-15

New characteristics of the inductory phase and kinetic study of DL- malic acid-acetone-BrO~3^--Mn^2^+-H~2SO~4 chemical oscillatory reaction

An Congjun;Gan Nanqin;Liu Yi;Li Junfeng;Lin Zhixin   

  1. Wuhan Univ, Dept Chem.Wuhan(430072)
  • Published:1998-10-15

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在前文研究工作的基础上,较详细地研究了DL-苹果酸(以下简称DL-MA)、丙酮(以下简称Act)参与下的新型化学振荡反应及各种影响因素,对各主要参与反应物质在诱导期中的作用、起振原因、诱导期的新特征和可能反应机理进行了较为深入的研究,分别获得DL-MA,KBrO~3,MnSO~4的浓度对诱导期影响的拟合方程。以及诱导期的表观活化参数为E~I~N=68.50kJ·mol^-^1。

关键词: 振荡化学反应, 诱导期, 苹果酸, 丙酮, 反应机理, 动力学研究

As an extension of our previous study, this paper reports a new type of oscillatory reaction system: DL-malic acid (abbreviated to DL-MA)- CH~3COCH~3 (abbreviated to Act)-Mn^2^+-H~2SO~4, and all factors that affect the reaction. The role of each reactant in the inductory phase, the cause of oscillation, the new characteristics of the inductory phase and possible mechanism of oscillatory reaction have been investigated. The simulation equations in which the inductory phase is affected by concentration of DL-MA, KBrO~3 and MnSO~4 are obtained. The activation parameter of the inductory phase, E~I~N is 68.50kJ· mol^-^1.

Key words: OSCILLATION CHEMICAL REACTION, INCUBATION PERIOD, MALIC ACID, ACETONE, REACTION MECHANISM, KINETIC STUDY

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