乙酰丙酮-BrO_3^--Mn^(2+)-H_2SO_4的非线性化学反应新特征

The New Characteristics and Kinetics of Diacetone Malic Acid BrO - 3 Mn 2+ H 2SO 4 Nonlinear Chemical Reaction

首次报道了乙酰丙酮 Ｂｒ Ｏ－３  Ｍｎ２＋  Ｈ２ Ｓ Ｏ４ 体系化学振荡反应的最佳反应条件及浓度范围，研究了温度对振荡反应的影响，获得振荡反应周期、振荡寿命所对应的表观活化参数分别为 Ｅｐ ＝ １００．６８ ｋ Ｊ·ｍ ｏｌ－ １、 Ｅ Ｌ ＝４８．０５ ｋ Ｊ·ｍ ｏｌ－ １ ，首次报道并较为详细地研究了这一体系的新特征，对振荡反应中间物及产物进行了分析。

A new chemical oscillating reaction system:Diacetone BrO - 3 Mn 2+ H 2SO 4 has been described.The best reaction condition and the reactant's concentrations have been reported. The effect of the reaction temperature on the oscillation has been studied and the average activation energies of the reaction during the oscillation period Ep and the oscillatory life E L are obtained, E p=100.68 kJ·mol -1 , E L=48.05 kJ·mol -1 .The new characteristics of oscillation period have been investigated in detail. The intermediate and the end product of the oscillatory reaction is proposed and the possible mechanism have been analysed.