化学学报 ›› 2001, Vol. 59 ›› Issue (6): 890-989. 上一篇    下一篇

研究论文

pH探针在亚氯酸盐-硫代硫酸钠非线性反应体系研究 中的应用

高庆宇;孙康;赵跃民;李兰萍   

  1. 中国矿业大学化工学院
  • 发布日期:2001-06-15

Application of pH probe to the study of ClO2^- - S2O3^2- nonlinear reaction system

Gao Qingyu;Sun Kang;Zhao Yuemin;Li Lanping   

  • Published:2001-06-15

当pH探针应用于ClO2^--S2O3^2-非线性反应体系动力学研究时,发现了封闭体系的pH准振荡和CSTR中的pH稳态振荡现象,在CSTR中振荡的pH与铂电位同相位,且与闭系中小峰性质相同,反应机理包括氯氧化合物自身反应,氯氧化合物-硫化合物反应,硫-硫反应。以硫价态变化驱使的动力学模型模拟出闭系准振荡和CSTR中pH稳态振荡。该模型也为解释反应-扩散体系中的pH前沿波提供模型机理。

关键词: 探针, 亚氯酸盐, 硫代硫酸钠, 非线性反应, 准振荡, 振荡化学反应, PH

When pH probe was applied to study the ClO2^- - S2O3^2- nonlinear reaction system, batch pH oligooscillation and CSTR pH oscillation were obtained. The reaction mechanism consists of oxychlorine reactions, oxychlorine-sulfur reactions and sulfur-sulfur reactions. A model resultedform valence change of sulfur can simulate the dynamics in both batch and CSTR, and it also can explain the pH front in reaction-diffusion system.

Key words: PROBES, CHLORITE, SODIUM THIOSULFATE, OSCILLATION CHEMICAL REACTION, PH

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