作者:Qian Niu、Xiong Luo、Shou-Gao Li、Ying Meng、Fu-Xiang Li
DOI:10.14233/ajchem.2014.15616
日期:——
Microwave irradiation was used to synthesize glyoxalic acid from methyl dichloroacetate. The effects of the irradiation time, reaction temperature, reactant ratio and different alkali on the yield of glyoxalic acid were studied and also compared with those effects under conventional heating. The yield of glyoxalic acid can reach 84.6 % within 6 h under the microwave irradiation, which is 12.2 % higher than that under conventional heating within 12 h. The optimum reaction time is 7.5 h and the optimum reaction temperature is 75 °C under the microwave irradiation. The results indicated that microwave irradiation was superior to the conventional heating obviously.
利用微波辐照从二氯乙酸甲酯合成乙醛酸。研究了辐照时间、反应温度、反应物比例和不同碱对乙醛酸收率的影响,并与传统加热条件下的影响进行了比较。在微波辐照下,乙醛酸的产率在 6 小时内可达到 84.6%,比常规加热下 12 小时内的产率高出 12.2%;微波辐照下的最佳反应时间为 7.5 小时,最佳反应温度为 75 ℃。结果表明,微波辐照明显优于传统加热。