期刊论文

Electrochemical Behavior and Density Functional Theory Research on Antioxidant in Transformer Oil

中文

分析科学学报

1006-6144

2016

32

2

161-166

10.13526/j.issn.1006-6144.2016.02.003

湖南省科技计划重点项目（No.2013GK2006） 广西电网公司科研项目（No.K-GX2013-117）

本校为第一机构

采用差分脉冲伏安(DPV)法,结合密度泛函理论(Density Functional Theory, DFT)计算,研究了抗氧化剂2,6-二叔丁基对甲酚(T501)的电化学行为,考察了工作电极的材料和大小,及电解质溶液的组成和浓度等实验条件。最佳实验条件为直径6 mm石墨电极为工作电极,KOH-乙醇溶液(KOH浓度0.15mol/L)为电解质溶液。在优化条件下,基于变压器油T501使用浓度范围内(质量分数0.05%~0.50%),T501的浓度(c)与峰电流(I_p,μA)之间呈现良好的线性关系,建立了一种快速、准确测定变压器油中T501含量的新方法。该方法检测结果与国家标准方法的测定结果没有显著性差异,在保证准确性的前提下,大大提高了变压器油中T501含量测...

The electrochemical behaviors of 2,6-di-tert-butyl-p-cresol (T501) were investigated by differential pulse voltammetry and density functional theory.The experimental conditions were optimized,such as the material and size of working electrode,the composition and concentration of electrolyte solution.The working electrode was a 6mm-diameter graphite electrode,the alcoholic-KOH solutions were used as electrolytes,and the concentration of KOH were controlled to be 0.15 mol/L.Under the optimum conditions,a new method for rapid and accurate detectio...