摘要
自1978年 Koros 和 Orban 首先报导以苯酚和苯胺及其衍生物为底物的非催化反应振荡现象以来,人们普遍认为可用 OKN 机理或修正的 OKN 机理来解释此类以有机物为底物的反应振荡行为.但我们在详细考察了苯胺-溴酸钾-硫酸体系的反应振荡现象(反应物浓度、反应温度对振荡诱导期、周期、寿命和振荡周期次数随时间的变化规律)以及对振荡时间参数动力学作了分析后,发现无催化剂时,振荡存在浓度“分界”和温度“分界”点,而在有催化剂时,“分界”现象消失.这些独特的行为是很难用 OKN 机理作出合理解释的.
The chemical oscillation behavior during the reaction of Aniline- KBrO_3-H_2SO_4 system has been described.The effects of initial concentration of various reactants and temperature on the preoscillation time,period,period number and life-time of this oscillation system are investigated.It is found that the oscillation bahavior is very peculiar.There are oscillations called “regiondiscrepant”and“period-double montonous”in the system.Besides,the “region-discrepant”oscillation is observed as changing of the reaction tem- perature.These special oscillations can't be explained with OKN mechanism.
出处
《中国科学院研究生院学报》
CAS
CSCD
1992年第2期234-237,共4页
Journal of the Graduate School of the Chinese Academy of Sciences
关键词
苯胺
反应振荡
底物
chemical oscillation
reaction kinetics
“regiondiscrepant”behavior
aniline
