【摘要】 为观察新型稳定性二氧化氯消毒液稳定性,采用水浴加温方法对二氧化氯中性水溶液热稳定性及稳定剂的影响进行了实验研究。结果,水溶液中二氧化氯的热分解属于二级反应,热分解速率常数(K)随温度升高而增大。磷酸一氢根类稳定剂使K值明显增加,即磷酸-氢根对二氧化氯的热分解具有很大催化作用。二氧化氯在含磷酸-氢根离子的溶液中,其热分解速率常数却随温度升高而减小,说明磷酸一氢根离子对二氧化氯还有一定的稳定作用。在二氧化氯水溶液内加入聚有机胺或聚胺糖对其具有明显的稳定作用。结论,随温度增加可加速水溶液中二氧化氯分解,加入合适的稳定剂可明显提高水溶液中二氧化氯热稳定性能。更多还原

【Abstract】 In order to observe the stability of new-type stable chlorine dioxide disinfection solution,water bath warming method was used to study experimentally the influence on thermostability of neutral water solution of chlorine dioxide and the stabilizer.Results: The thermodecomposition of chlorine dioxide in water solution belonged to second-order reaction and the thermodecomposition rate constant(K) increased with increasing temperature.The stabilizer of monohydric phosphate radical group caused significant increase in K value,i.e.,monohydric phosphate radical had strong catalytic effect on thermodecomposition of chlorine dioxide.The thermodecomposition rate constant of chlorine dioxide in the solution containing monohydric phosphate radical ion decreased with increasing temperature,indicating that monohydric phosphate radical ion had certain stabilizing effect on chlorine dioxide.Addition of organic polyamine or polyamine sugar to the water solution of chlorine dioxide produced obvious stabilizing effect on it.Conclusion: Increase in temperature can accelerate the decomposition of chlorine dioxide in water solution.Addition of suitable stabilizer can increase obviously the thermostability of chlorine dioxide in water solution.更多还原