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›› 2005, Vol. 5 ›› Issue (6): 609-612.

• 反应与分离 • 上一篇    下一篇

硫铁矿还原氯酸钠生成二氧化氯的动力学

彭清静,傅伟昌,蔡石坚   

  1. 吉首大学资源与环境科学学院
  • 出版日期:2005-12-20 发布日期:2005-12-20

Kinetics of Reduction of Sodium Chlorate with Pyrite to Produce Chlorine Dioxide

PENG Qing-jing,FU Wei-chang,CAI Shi-jian   

  1. Department of Environmental Science, Jishou University, Jishou, Hunan
  • Online:2005-12-20 Published:2005-12-20

摘要: 对硫铁矿还原氯酸钠生成二氧化氯的动力学进行了研究. 结果显示,氯酸根被还原为二氧化氯的选择性高达99.7%以上. 动力学分析表明,反应对氯酸根为零级,对氢离子为一级,反应速率方程为rD=kCB,其中,表观活化能Ea=52.9 kJ/mol,速率常数k=2.14x107exp(-6360/T) L/(m2.min).

关键词: 动力学, 二氧化氯, 硫铁矿, 还原, 氯酸钠

Abstract: The reduction kinetics of sodium chlorate with pyrite to produce chlorine dioxide was investigated. It was shown that selectivity of chlorate ion reduced to chlorine dioxide was over 99.7%. The reaction has been found in zero and first orders with respect to ClO3- and H+, respectively. The kinetic equation is rD=kCB, the apparent activation energy is 52.9 kJ/mol, and the reaction rate constant k=2.14x107exp(-6360/T) L/(m2.min), respectively.

Key words: kinetics, chlorine dioxide, pyrite, reduction, sodium chlorate