碱性溶液中溴离子阳极氧化动力学的研究  

Kinetice Study of Brom ide Oxidation on the Anode Electrode in Alkaline Solution

作　　者：武爱莲[1] 孙彦平[1] 

机构地区：[1]太原理工大学化工系,太原030024

出　　处：《化学工业与工程》1999年第5期270-274,共5页Chemical Industry and Engineering

摘　　要：从理论上分析了碱性溶液中溴的络合、水解及氢溴酸分解对电极反应的影响，并考虑了阳极相应发生的副反应，提出了碱性介质中 Ｂｒ－ 阳极氧化的动力学模型，采用最小二乘法回归得到了动力学参数，结果表明，模型预测与试验结果相吻合。运用稳态极化和暂态循环伏安法研究了 Ｂｒ－ 在旋转圆盘铂电极上的氧化过程，分析了循环伏安曲线，初步确认 Ｂｒ－ 氧化为 Ｂｒ２ 是电极的主要过程。Kinetic m odelw as presented for Br- oxidation on the anode electrode in alka line solution taking account ofthe side reactions and by theoretically analyzing theeffection of brom ine com plexing、hydrolysis equilibrium ofbrom ide and dissociationofhypobrom ous acid on the anode reactions. The reaction characteristic of Br- at arotating disk electrode w as abtained by stationary polarization and transient cyclicvoltam m etry. The m ain process at electrode reactions is Br- oxidation into Br2 byanalysis of the cyclic voltage current. The kinetic param eters w ere obtained by ap plying the m ethod ofnonlineer regressin. The expected results by the m odelare incorrespondence w ith the experim entaldata.

关 键 词：碱性溶液 溴离子 阳极氧化 动力学 电极 循环伏安曲线 

分 类 号：O613.43[理学—无机化学] O646[理学—化学]