连续管式反应制备丙二醇丁醚的研究

Study on preparation of propylene glycol butyl ether by continuous tube reaction

制备了固体酸Hβ/SO_4^(2-)-TiO_2催化剂,以正丁醇与环氧丙烷为原料、固体酸Hβ/SO_4^(2-)-TiO_2为催化剂进行连续管式反应制备丙二醇丁醚。以环氧丙烷转化率和选择性为目标,首先考察单因素反应压力、反应温度、原料配比及空速等因素对合成丙二醇丁醚的转化率和选择性的影响,然后通过正交试验进一步优化管式反应的条件,确定最佳合成工艺条件。

Solid acid Hβ/SO42--TiO2 catalyst is prepared,and then propylene glycol butyl ether is prepared by using n-butyl alcohol and propylene oxide as raw materials and Hβ/SO42--TiO2 as catalyst in the tubular reactor. Taking the conversion rate and selectivity of propylene oxide as the examining goal,the effects of reaction pressure,reaction temperature,mole ratio of raw materials and liquid hourly space velocity（ LHSV） on the conversion and selectivity of propylene glycol butyl ether are studied,and then the conditions of the tube reaction are further optimized by the orthogonal experiment to determine the optimum synthesis conditions.