化工学报2019，Vol.70Issue(12)：4821-4827,7.DOI:10.11949/0438-1157.20190689
基于原位红外光谱的水相苯酚电氧化机理研究
Mechanism of phenol electro-oxidation in aqueous solution based on in situ infrared spectroscopy
摘要
Abstract
The electrochemical oxidation mechanism of phenol on the surface of Pt electrode was studied by electrochemical in situ spectroscopy. In 0.1 mol/L Na2SO4 solution, the reaction potential of electrochemical oxidation of phenol on Pt electrode is +0.9—1.0 V (vs SCE), and the oxygen evolution potential is +1.3 V. In situ infrared spectroscopy showed that electrode potential had a great influence on oxidation behavior of phenol. When the potential was lower than 0.9 V, the main intermediates of phenol oxidation were dihydroxyhenzene, quinone and a few alcohols. When the potential was controlled between 0.9 V and 1.1 V, the structure of benzene ring was destroyed, and the main intermediates were ketones, acids, alcohols and CO2. According to the changes in absorption peak of functional group, phenol oxidation on the platinum electrode surface was as follows: phenol, dihydroxyhenzene, quinone, ketone, alcohol, acid and CO2. The potential of ammonia oxidation on the platinum electrode surface was + 0.5 V, which indicated that ammonia in competition with phenol oxidation in the low potential region (<0.9 V).关键词
苯酚/原位红外光谱/电化学氧化/界面/机理Key words
phenol/ in situ FTIR/ electrochemical oxidation/ interface, mechanism分类
数理科学引用本文复制引用
王家德,袁通斌,周丹飞,周栩乐,甘永平..基于原位红外光谱的水相苯酚电氧化机理研究[J].化工学报,2019,70(12):4821-4827,7.基金项目
国家自然科学基金项目(51878614) （51878614）
