Abstract: The environment-friendly frost resisting plasticizer ( bis(2-butoxyethyl) sebacate ) was synthesized by reaction of sebacic acid(SA) with 2-butoxyethanol(EB) using HZSM-5 as catalyst. The effects of Si/Al ratio, dosage of catalyst, dosage of water-entrainer, raw materials ratio and reaction time on the yield were investigated. The optimal reaction conditions were as follows：n(EB)∶n(SA)=2.5∶1, catalyst (5% of mass of SA), water-entrainer (15% of mass of SA), reaction time (3.5 h) and reaction temperature (170～200℃), the esterification rate was 91.91%. After five times of repeated use, the esterification yield still maintained above 90% over HZSM-5. The apparent kinetics model of esterification was established, and the equation of reaction rate was： .

Key words: zeolite, esterification, kinetics

摘要： 以癸二酸和乙二醇单丁醚为原料，用HZSM-5分子筛催化合成环保耐寒性增塑剂癸二酸二丁氧基乙酯。考察了催化剂的硅铝比、催化剂用量、带水剂用量、原料配比、反应时间对酯化率的影响。最佳工艺条件为：醇酸摩尔比为2.5∶1，催化剂用量为酸质量的5%，带水剂用量为酸质量的15%，反应时间为3.5 h，反应温度为170～200 ℃，该工艺条件下酯化率可达91.91%。经过5次使用后，酯化率仍在90%以上。同时建立了该酯化合成的表观动力学模型，得到反应速率方程为： 。

关键词: 分子筛, 酯化反应, 动力学