摘要
研究了HCHO参与下的(DL 苹果酸) BrO-3 Mn2+ H2SO4化学振荡反应体系的非线性动力学行为,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5.0×10-5～1.0×10-2mol·L-1范围内,HCHO对振荡反应的诱导期和周期有较大影响,且HCHO浓度的对数lnc(HCHO)与诱导期倒数的对数ln(1/tin)及周期倒数的对数ln(1/tp)均存在线性关系.诱导期和周期的表观活化参数分别为70.87,55.71kJ·mol-1.另外还对HCHO参与下的可能振荡反应机理进行了探讨.
The non-linear kinetic behavior of chemical oscillatory reaction of the DL-Malic acid- BrO^-_3- Mn^(2+)-H_(2)SO_(4 )with HCHO participated was studied. The main factors of influence and the initial concentration ranges of the each reactant were investigated. The results show that HCHO has strong influence on the induction phase and oscillatory phase in the range of 5.0×10^(-5)-1.0×10^(-2) mol·L^(-1), and the lnc(HCHO) has a good linear relationship with ln(1/t_(in)), the lnc(HCHO) also has a good linear relationship with ln(1/t_p). The apparent activation energy of induction phase and oscillating period were obtained, E_(in)=70.87 kJ·mol^(-1), E_p=55.71 kJ·mol^(-1). The possible oscillating mechanism was discussed briefly.
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2004年第2期177-181,共5页
Journal of Wuhan University:Natural Science Edition
基金
国家自然科学基金(20077020)
长江大学基金资助项目(HNZDI200306)
