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用电化学方法研究了Ａｇ＋－Ｃｅ（ＳＯ４）２－ＫＢｒＯ３－ＣＨ２（ＣＯＯＨ）２－Ｈ２ＳＯ４化学振荡反应动力学．考察不同［Ａｇ＋］对振荡反应曲线的影响时发现，若体系中含有痕量Ａｇ＋时，则对振荡曲线产生显著影响，不同［Ａｇ＋］与振荡周期ｔｐ有良好的线性关系，线性范围为２×１０－７～１．８×１０－５ｍｏｌ·Ｌ－１，是一重现性好，灵敏度高，操作条件简单的动力学分析测试体系，升高温度可缩短反应的振荡周期ｔｐ，将ｌｎ１／ｔ，对１／Ｔ作图符合阿累尼乌斯线性关系，振荡周期ｔｐ的表观活化参数Ｅ＇ｐ＝６７．５１ｋＪ·ｍｏｌ－１，与未加Ａｇ＋的ＢＺ振荡周期表观活化参数Ｅ＇ｐ＝５８．４９ｋＪ·ｍｏｌ－１相比较可知，Ａｇ＋可使振荡周期表观活化参数增加．最后本文还对Ａｇ＋参与下的ＢＺ振荡反应体系的可能机理进行了探讨，提出Ａｇ＋可起“溴离子缓冲泵”的作用机理．
The chemical reaction kinetics of Ag + -Ce (SO4) 2-KBrO3-CH2 (COOH) 2-H2SO4 was studied electrochemically. The effect of different [Ag +] on the oscillatory reaction curve was investigated. It was found that there was a good linear relationship between the different [Ag +] and the oscillation period tp if the system contained trace amounts of Ag +. The linear range was 2 × 10-7 ~ 1.8 × 10-5mol·L-1, is a good reproducibility, high sensitivity, simple operating conditions, kinetic analysis test system, increasing the temperature can shorten the reaction oscillation period tp, the ln1 / t, plotting the linear relationship of 1 / T with Arrhenius, the apparent activation parameter E’p = 67.51kJ · mol-1 for the oscillation period tp and the apparent activation parameter E ’P = 58.49kJ · mol-1, we can see that Ag + can increase the apparent activation parameters of the oscillation period. At last, the possible mechanism of BZ oscillation reaction system with Ag + is discussed. The mechanism of action of Ag + ion as “bromide buffer pump” is proposed.