以对苯二甲酸和乙二醇为原料,采用自制催化剂合成出了对苯二甲酸二(β-羟乙基酯)(BHET)。最佳反应条件:1 mol对苯二甲酸使用0.2 g催化剂,醇酸摩尔比为12:1,反应时间为10 h,反应温度为185℃。粗品经结晶、重结晶可得质量分数>99%的BHET产品。 Using terephthalic acid and ethylene glycol as raw materials, bis (β-hydroxyethyl terephthalate) (BHET) was synthesized by self-made catalyst. The best reaction conditions: 1 mol of terephthalic acid using 0.2 g of catalyst, the molar ratio of 12: 1, the reaction time is 10 h, the reaction temperature is 185 ℃. The crude product is crystallized and recrystallized to yield a BHET product with a mass fraction> 99%.