二氧化氯的实验室制备及稳定性研究

Research on Experimental Preparation and Stability of Chlorine Dioxide

对自制二氧化氯的吸收液温度、稳定剂添加量、使用和测定前活化方法和二氧化氯溶液的降解速度进行了研究。实验结果表明,二氧化氯的吸收液在0℃以下及稳定剂1%用量时含量较高,活化酸采用HCl最好,ClO2溶液在1%稳定剂存在下降解最慢。对稳态吸附型二氧化氯的稳定性的研究表明,低温及保存时间很重要,但稳定剂的影响不明显。通过比较二氧化氯含量测量方法,提出了一种改良的的方法。

The paper investigated absorption solution temperature, stabilizing additive level and activation methods before application and measurement in experimental preparation of chlorine dioxide, and decomposing rate as well. The results showed that chlorine dioxide had higher percentage when absorption solution was at 0 ℃ and stabilizing additive was 1%. HCl was better activation acid than sulfuric acid and acetic acid. Its decomposing rate would become low when stabilizing additive was 1%. Low temperature and short storage time were important to solid stable chlorine dioxide. In addition, a modified test method of chlorine dioxide content was provided after comparing with common test methods.