糠醛的电化学聚合

Electrochemical Polymerization of Furfural

变压器油中糠醛的含量是预测变压器故障的重要参数。为了验证在乙腈溶剂中检测糠醛的可行性,以乙腈为溶剂,高氯酸钠和氢氧化钠为支持电解质,在0.5～2.3 V电位范围内,采用循环电压-电流法,使糠醛在玻碳电极上形成致密的聚合物膜。聚合物膜在波长约460 nm处有明显的可见光吸收,随着溶液中糠醛浓度的增大和扫描圈数的增加,聚合物膜在此处波长下的吸光度增大。实验结果表明,此法用于检测糠醛不太理想。

Furfural content in transformer oil is an important parameter for forecasting transformer failure. In order to prove the feasibility of detecting furfural in acetonitrile solvent, sodium perchlorate and sodiumhydroxide are taken as supporting electrolyte and dense polyfurfural membrane is formed on glass carbon electrode by adopting cyclic voltammetry in the po- tential range from 0.5 V to 2.3 V. The polyfurfural has a obvious visible absorption at the wavelength of 460 nm. With the increase of the concentration of furfural and the raising number of scanning, the absorption value of polyfurfural is strength- ened. The result shows that this method is not good enough to detect furfural.