S0_4^(2-)/Ti0_2固体超强酸催化合成草酸二异戊酯的研究  

Study on the Sythesis of Diisopentyl Oxalate Catalyzed by SO_4^(2-)/TiO_2 Solid Superacid

作　　者：高健 

机构地区：[1]抚顺石化公司石油一厂,辽宁抚顺113002

出　　处：《辽宁化工》2005年第5期190-191,193,共3页Liaoning Chemical Industry

摘　　要：以SO2-4-TiO2固体超强酸为催化剂,由草酸和异戊醇为原料合成了草酸二异戊酯,考察了催化剂活化温度、原料配比和催化剂用量对反应的影响以及催化剂的重复使用性。结果表明,SO2-4-TiO2固体超强酸催化活性高、催化速率快、化学稳定性好,重复使用性佳、无环境污染;在最佳反应条件下,草酸二异戊酯收率达到99.7%,产品的质量分数都达到99.9%以上。Diisopentyl oxalate was synthesized by the esterification of oxalic acid and isopentyl alcohol in the presence of SO^(2-)_4/TiO_2 solid superacid catalysts. The effects of activating temperatures, quantities of catalysts, ratio of reactants and repeatability were discussed. The result showed that SO^(2-)_4/TiO_2solid superacid catalyst has high catalytic activities and rate, good chemical stability,good repeatability and little waste discharged; the yields and purities of diisopentyl oxalate are up to 99.7 % and 99.9 % in optimum conditions, respectively.

关 键 词：固体酸超强酸 酯化反应 草酸二异戊酯 

分 类 号：TQ425.23[化学工程]