摘要
采用电化学测试技术和原位红外光谱检测技术研究了乙二胺四乙酸(EDTA)溶液在Pt电极上的电氧化行为。结果显示,在阳极极化电位0.60 V左右EDTA开始发生阳极氧化降解反应,主要降解产物为CO2、伯胺和仲胺。并且EDTA的阳极氧化降解反应随溶液酸度的减小即EDTA质子化程度的降低而减弱,但随着阳极极化的加剧而增强。
The electrochemical oxidation behavior of ethylenediaminetetraacetic acid （EDTA） on a flake of Platinum electrode had been investigated by the measurement of cyclic voltammetry and in situ FI＇IR technique. It is confirmed that EDTA starts to get decomposed at the anode potential of 0.60 V （vs.SCE） with CO2, primary amine and secondary amine as its main products. The anode degradation of EDTA gets weakened as the acidities of the solution get decreased. What＇s more, during the positive sweep when the potential is positive to 1.40 V （ vs.SCE）, the mineralization of EDTA intensely takes place along with the decomposition of water.
出处
《浙江化工》
CAS
2011年第9期27-30,共4页
Zhejiang Chemical Industry
