微波辐射下NaHSO_4·H_2O催化合成烷基糖苷

摘要

采用直接苷化法,以葡糖糖和十二醇为原料,NaHSO4.H2O为催化剂,辅助微波/超声波辐射催化合成烷基糖苷。探讨了工艺条件对葡萄糖转化率和产品外观的影响,得到最佳合成工艺条件为：微波输出功率300 W,辐射时间30 min,超声波功率600 W,n（十二醇）∶n（葡糖糖）=5∶1,催化剂用量w（催化剂）∶w（葡糖糖）=1∶100,在该条件下,葡萄糖转化率达98.9%,催化剂可回收重复使用,并对合成的样品进行红外光谱分析。%Alkyl polyglucoside was synthesized by direct reaction of glucose with laurel alcohol, with NariSO4 H2O as catalyst under microwave irradiation / ultrasonic irradiation. Influence of preparation conditions on conversion rate and product appearance were studied. The optimum conditions were obtained as following： microwave power of 300 W, radiation time of 30 min, ultrasonic power of 600 W, mole ratios n （aurel alcohol） ： n （glucose） = 5 ： 1, and w （catalyst） ： w （glucose）=1 ： 100. In this case, the conversion rate of glucose was up to 98.9% and the catalyst could be reused. IR spectrum of APG was analyzed.