乙二醇单己醚的合成研究

Research on the Synthesis of Ethylene Glycol Monohexylether

用环氧乙烷与己醇为原料合成乙二醇单己醚 ,通过正交实验得到了影响反应的 4种主要因素的大小顺序 :催化剂的量 >原料物质的量比 >反应温度 >催化剂的种类。最佳工艺条件为 :己醇与环氧乙烷的物质的量比为 :n(n C5H11CH2 OH)∶n (C2 H4 O) =1∶0 5 ;反应温度为 1 0 0℃ ;己醇与催化剂的物质的量比为 :n(n C5H11CH2 OH)∶n(催化剂 ) =1∶0 0 9。乙二醇单己醚的收率为 85 4 % ,纯度可达 98 5 %。乙二醇单己醚的纯度用气相色谱分析 ,用红外光谱、质谱对产品乙二醇单己醚的结构进行表征。

Ethylene glycol monohexylether was synthesized from ethylene oxide and 1 hexanol in the presence of catalyst.The sequence of the effects on reaction was catalyst>1 hexanol>reaction temperature>the kind of catalyst.The optimum production conditions were as follows:ethylene oxide:1 hexanol = 0 5 mol∶1 mol,reaction temperature 100 ℃,1 hexanol:catalyst = 1 mol∶0 09 mol.Under the optimum conditions,the yield of ethylene glycol monohexylether reached 85 4%,the purity of product was 98 5%.The structure of ethylene glycol monohexylether was characterized by IR spectrum and MS.