臭氧化合成乙醛酸技术研究 Ⅱ.马来酸酯臭氧化过程

Synthesis of Glyoxylic Acid by Ozonization Ⅱ. Maleate Ozonization Process

对马来酸酯臭氧化合成乙醛酸的技术进行了研究，重点考察了臭氧化过程中的工艺参数对反应的影响。获得优化的工艺条件为，马来酸酯臭氧化反应的适宜温度应小于-5℃，臭氧浓度约30gO3／m^3时，马来酸酯浓度为6—10g／100mL。通过后续的催化加氢还原和水解，获得高纯度的乙醛酸产品，总收率达到80％以上。

The synthesis of glyoxylic acid by ozonization of maleate was studied, the influence of technological parameter on the reaction during ozonization process were investigated. The optimum conditions were as follows： ozonization temperature was less than -5℃ , and the concentration of maleate was in the range of 6.0 ~ 10. 0g/100mL with an ozone concentration of 30g O3/m^3. High purity glyoxylie acid product was obtained through ozonization reaction followed by catalytic reduction with hydrogen and then hydrolysis, the total yield was above 80%.