摘要
采用循环伏安法和恒电位电解法相结合的实验手段，研究了１．５－二硝基蒽醌（１，５－ＤＮＡ）在硫酸溶液中、汞齐化铜电极上阴极还原制备１，５－二氨基－４，８－二羟基蒽醌（１，５－ＤＡ－４，８－ＤＨＡ）的电化学反应性能，从而探讨了该电极过程的反应机理。结果表明；在１２．７５ｍｏｌ／ＬＨ２ＳＯ４和１４０℃温度下，１，５－ＤＮＡ在汞齐化钢阴极表面上具有反应物强吸附和不可逆随后化学反应的特征，整个电极反应由四步还原、一步Ｂａｍｂｅｒｇｅｒ重排构成，属８电子反应过程。
The performance of electrochemical reaction in which 1,5-dinitroanthraqninone(1,5DNA)is reduced into 1,5-diamino-4,8-dihydroxyanqione(1,5-DA-4, 8-DHA)in sulfuricacid solution on amalgamated coppper electrode is investigated by cycllic voltammetry and constant potential electrolysis.Thus the reation mechanism is primarily analysed.The resultshows that the electroreduction process of 1,5-DNA is characterized by strong reatant adsorption and subsequent irrev ersible chemical reation on amalgamated copper electrode in 12.75mol/L H2SO4 at the high temperature. The final elcetrolytic product is verified to be 1, 5-DA4,8-DHA by the infrared-spectrogram. Under experimental conditions,1,5-DNA electro-reduction process is involved. with four steps which include Bamberger rearrangenment of hydroxyamino intermediate, and 8 electrons are transferred.
出处
《浙江工业大学学报》
CAS
1996年第1期11-15,共5页
Journal of Zhejiang University of Technology
基金
浙江省自然科学基金
关键词
二硝基蒽醌
二氨基
二羟基蒽醌
电化学还原
dinitroanthraqnione
1,5-dianmino-4
8-dihydrroxyanqinone
Electrochemicalreduction
