1,2-丁二醇单叔丁基醚合成工艺

Synthesis of Butyl Glycol t-Butyl Ether

以煤制乙二醇副产1,2-丁二醇和混合C4为原料,采用强酸性树脂催化合成1,2-丁二醇单叔丁基醚。研究了工艺条件对强酸性树脂催化异丁烯和1,2-丁二醇醚化反应性能的影响。结果表明,适宜的反应条件为:反应温度为50~60℃、反应压力为0.9 MPa、液时空速为1.0 h^-1、醇烯物质的量之比为4.0~6.0。在优化条件下,1,2-丁二醇选择性地和混合C4中的异丁烯反应,异丁烯转化率和1,2-丁二醇单叔丁基醚选择性分别达到89%和90%。1000 h稳定性研究结果显示催化剂稳定性良好。

Butyl glycol t-butyl ether was synthesized through the etherification of C4 hydrocarbon monomer and coal glycol byproduct 1,2-butanediol.The influence of various conditions on this etherification reaction with strong acid resin as catalyst was investigated in this paper.The results showed that the proper conditions were as follows:reaction temperature 50-60℃,reaction pressure 0.9 MPa,liquid hourly space velocity 1.0 h^-1,mole ratio of 1,2-butanediol to isobutene 4.0-6.0.Under the optimized conditions,1,2-butanediol reacted selectively with isobutene in C4 hydrocarbon monomer.The conversion of isobutene and the selectivity of butyl glycol t-butyl ether were 89%and 90%,respectively.The catalyst performance remained stable during 1000 h testing period.