NO_2^-对DL-苹果酸-BrO_3^--Mn^(2+)-H_2SO_4振荡反应诱导期的影响

Influence of NO_2^- on the Inductory Phase of DL-Malic acid-BrO_3^--Mn^(2+)-H_2SO_4 Chemical Oscillatory Reaction

报道了NO-2 参与下的DL 苹果酸 (以下简称DL MA) BrO-3 Mn2 + H2 SO4化学振荡反应体系 ,考察了振荡体系中诸反应物的初始浓度范围及影响因素 结果表明 ,NO-2 的浓度cNO-2 与诱导期倒数的对数ln(1/tin)有良好的线性关系 ,线性范围为 8.2 9× 10 -5～ 3.16× 10 -3 mol·L-1 诱导期表观活化参数Ein为 5 8.6 3kJ·mol-1 分析了NO-2

The influence of NO - 2 on DL\|Malic acid\|BrO - 3\|Mn 2+ \|H 2SO 4 chemical oscillatory reaction has been studied. The initial concentration of each reactant and the effect factor have been investigated. The results show linear relationship between ln(1/ t in ) and c NO - 2 in the linear range of 8.29×10 -5 ～3.16×10 -3 mol·L -1 . Within the range, NO - 3 has no influence. The apparent activation parameter of inductory phase( E in ) is obtained, E in =58.63 kJ·mol -1 . Also the possible mechanism of the inductory phase with existing NO - 2 has been discussed in detail.