【摘要】 用滴定热量计考察丙二酸(以下简称MA)-溴酸钾-硝酸铈铵-硫酸振荡体系在不同反应物浓度下周期、诱导期、诱导期放热的变化情况. 发现反应物浓度与周期、诱导期的倒数之间存在着线性关系,并观测到溴酸钾与丙二酸的浓度固定在不同的值时,随着Ce4+ 浓度的逐渐变稀,振荡周期变短,从动力学理论角度对上述现象进行了分析.更多还原

【Abstract】 The heat oscillations of Belousov\|Zhabotinskii reactions which occur in a solution composed of KBrO 3, CH 2(COOH) 2, (NH 4) 2Ce(NO 3) 6 and H 2SO 4, have been observed by titration calorimetry in order to study the relation between the concentration of reactants and the oscillation periodic time, induced periodic time, the heat of induce period. The reciprocal value of the oscillation periodic time or induced periodic time vs. the concentration of reactants fitted well with linear expression. As the concentration of Ce(Ⅳ) decreased, the oscillation periodic time became shorter, and viewed from the thermal kinetic theory, this phenomenon was explained.更多还原