均三异丙苯合成的研究

 采用烷基化法合成均三异丙苯。对离子液体催化剂进行筛选，对苯与丙烯在离子液体催化下合成三异丙苯的烷基化反应工艺条件进行考察，采用过烷基化方法提高反应产物的n(均三异丙苯)/ n(偏三异丙苯)，通过精馏方法提纯均三异丙苯。结果表明，较好的离子液体催化剂为2AlCl3/Et3NHCl；确定的较好的反应条件为：离子液体体积分数为10%，反应温度为50℃，丙烯用量为3.50mL/s。

STUDY ON THE SYNTHESIS OF 1,3,5-TRIISOPROPYLBENZENE

1,3,5-triisopropylbenzene was synthesized by alkylation of benzene and propylene using ionic liquids as catalyst. The compositions of ionic liquids and the alkylation conditions were studied. Moderate post-alkylation was used to improve the ratio of 1,3,5-triisopropylbenzene to 1,2,4-triisopropylbenzene in products and pure 1,3,5-triisopropylbenzene was obtained by fractionation. Results showed that 2AlCl3/Et3NHCl ionic liquid catalyst was preferred and the optimum reaction conditions were an ionic liquid volume ratio of 0.1, a reaction temperature of 50 ℃ and a propylene flow rate of 3.50 ml/s.