硫磺还原氯酸钠生成二氧化氯的动力学  

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

作　　者：彭清静[1] 傅伟昌[1] 彭良斌[1] 

机构地区：[1]吉首大学化学系,湖南吉首416000

出　　处：《过程工程学报》2002年第5期410-414,共5页The Chinese Journal of Process Engineering

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=1.36107 exp(7380/T) [L2/(m2.min.mol)].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=1.36107 exp(7380/T) [L2/(m2.min.mol)].

关 键 词：硫磺 还原 氯酸钠 二氧化氯 动力学 

分 类 号：TQ124.43[化学工程—无机化工]