摘要
研究了抗坏血酸对CH2(COOH)2-B rO3--Mn2+-H2SO4体系化学振荡反应的影响,考察了该体系中各反应物的初始浓度范围及主要影响因素.结果表明:在5.7×10-4~8.5×10-2mol/L的范围内,抗坏血酸对振荡反应的诱导期有较大影响,且抗坏血酸的浓度与振幅及抗坏血酸浓度的对数与诱导期倒数的对数均存在良好线形关系.诱导期和周期的表观活化参数分别为56.63 kJ/mol,73.81 kJ/mol;同时还对抗坏血酸参与下可能振荡反应机理进行了探讨.
Effect of ascorbic acid on malonic acid -BrO3^--Mn^2＋-H2SO4 chemical oscillation was studied, and the main factors of influence and the initial concentration ranges of the each reactant were investigated. Results show that ascorbic acid has strong influence on the induction phase in the range of 5.7 × 10^-4 - 8.5 × 10^-2 mol/L , and the ascorbic acid concentration acid has good linear relationship with the vibration amplitude, while the Inc（ ascorbic acid concentration） is linear with In （ 1/tin ）. The apparent activation energy of induction phase and oscillating period were obtained as Ein= 56.63 kJ/mol,Ep = 73.81 kJ/mol. The possible oscillating mechanism is also discussed briefly.
出处
《大连交通大学学报》
CAS
2009年第3期66-70,共5页
Journal of Dalian Jiaotong University
关键词
化学振荡反应
抗坏血酸
诱导期
振荡周期
chemical oscillating reaction
ascorbic acid
Induction phase
oscillation period
