固体超强酸SO_4^(2-)/Al_2O_3的制备及催化合成水杨酸异丙酯的研究  

Research on Solid Acid Catalysts for Synthesis of Isopropyl Salicylate

作　　者：王会菊[1] 

机构地区：[1]陇南师范高等专科学校科学教育系,成县742500

出　　处：《湖南工程学院学报（自然科学版）》2011年第3期58-61,共4页Journal of Hunan Institute of Engineering(Natural Science Edition)

摘　　要：采用沉淀——浸渍法制备了固体超强酸SO42-/Al2O3,并将其作为催化剂代替浓硫酸以异丙醇和水杨酸为原料合成水杨酸异丙酯.研究了不同的催化剂对水杨酸异丙酯产率的影响;考查并优化了固体超强酸SO42-/Al2O3催化合成水杨酸异丙酯的工艺条件.研究表明:以固体超强酸为催化剂时水杨酸异丙酯的产率明显高于其他普通的催化剂催化条件下酯化反应的产率,并且在水杨酸与异丙醇的投料比为1∶5,催化剂的用量占10%,反应时间为5 h,水杨酸异丙酯的产率可达到83.50%。Adopting the way of deposition and infusion to prepare the solid superacid SO4^2-/Al2O3 as cata- lyst is studied. The yield of isopropyl salicylicate is influenced by different catalysts and the esterification process condition. The results show that the yield of isopropyl salicylicate using solid acid SO4^2-/Al2O3 as catalyst is higher than the yield of isopropyl salicylicate other material as catalysts. In the presence of 10% of the catalyst （with respect to the total mass of the two reactants）, reaction of salicylic acid with isopropanol （in1：5molar ratio） for 5 hours, we get the max yield of isopropyl salicylicate.

关 键 词：固体超强酸催化剂 酯化反应 水杨酸异丙酯 

分 类 号：O623.624[理学—有机化学]