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›› 2002, Vol. 2 ›› Issue (5): 0-0.

• 5 •    

硫磺还原氯酸钠生成二氧化氯的动力学

彭清静, 傅伟昌, 彭良斌   

  1. 吉首大学化学系, 湖南 吉首 416000
  • 出版日期:2002-10-20 发布日期:2002-10-20

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

PENG Qing-jing, FU Wei-chang, PENG Liang-bin   

  1. Department of Chemistry, Jishou University, Jishou, Hunan 416000, China
  • Online:2002-10-20 Published:2002-10-20

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摘要： 对硫磺还原氯酸钠制备二氧化氯进行了研究. 结果显示，硫被氧化为硫酸的选择性为100%，而氯酸根被还原为二氧化氯的选择性高达98%以上. 该反应的反应条件温和，很适合工业化生产. 动力学分析显示，反应对氯酸根和氢离子均为一级，反应速率方程为rC= kCACB，其中，表观活化能Ea=61.4 kJ/mol，速率常数k=1.36?107 exp(–7380/T) [L2/(m2.min.mol)].

关键词: 动力学, 二氧化氯, 硫磺, 氯酸钠

Abstract: The kinetics of sodium chlorate reduction with sulfur to produce chlorine dioxide was investigated. It was shown that the selectivity of sulfur oxidized to sulfuric acid was 100%, the selectivity of chlorate ion to chlorine dioxide was over 98%. The kinetic equation is rC = k CACB, the apparent activation energy is 61.4 kJ/mol, and the reaction rate constant k=1.36′107 exp(–7380/T) [L2/(m2.min.mol)].

Key words: kinetics, chlorine dioxide, sulfur, sodium chlorate

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