中文摘要：

制备Ti／SnO2＋Sb2O2／PbO2电极，电极的组分及其价态由XRD和XPS表征；该电极可将2，2-二羟甲基丙醛直接电合成2，2-二羟甲基丙酸．应用高效液相色谱分析原料和产物，电化学方法研究电合成影响因素，包括：2，2-二羟甲基丙醛浓度、溶液pH值、反应温度和氧化电位等．在优化条件下（pH=1，C醛=0．10mol·L^-1，t=15℃，E=1．8V）电合成2，2-二羟甲基丙酸的转化率为58％，选择性36％，电流效率28％．本法为该产物的合成提供了一种新的途径．

英文摘要：

The Ti/SnO： ＋ Sb2O4/PbO2 electrode was prepared.. The structure phase and valent state were characterized by means of XRD and XPS. The 2,2-dimethylolpropionic acid was synthesized on the Ti/SnO2 ＋ Sb2O4/ PbO2 anode by direct electro-oxidation of 2,2 -dimethylolpropionaldehyde. The product and crude material were analyzed by HPLC, the effects of the concentration of 2,2 -dimethylolpropionaldehyde, pH, potential and reaction temperature were studied. The results showed that the optimum conditions were anode potential 1.8 V, pH = 1, reaction temperature 15℃ and 2,2-dimethylolpropionaldehyde concentration 0.10mol/L. Under the opti- mum conditions, the selectivity of 36%, the current efficiency of 28% and the conversion of 58% were reached. The reported method provides a new route for the synthesis of 2,2-dimethylol propionic acid.