固体超强酸S2O82-/TiO2催化合成戊二酸二异辛酯的研究

Study on the catalytic synthesis of dioctyl glutaricate with solid superacid S2O82-/TiO2

以固体超强酸S2O^2- 8／TiO2为催化剂，以异辛醇和戊二酸为原料合成戊二酸二异辛酯。研究了催化剂的用量、原料配比及反应时间对反应结果的影响。反应最佳条件为：醇酸摩尔比为2．5：1，反应时间为3h，催化剂用量0．4％。在此条件下，戊二酸二异辛酯收率96．0％。

Dioctyl glutaricate was synthesized using isooctyl alcohol and glutaric acid catalyzed by solid superacid S2O^2- 8/TiO2. The influences of amount of catalyst, the proportion of the ingredients, the reaction time on the experimental results were studied. The optimum reaction condition were as follows：the mole ratio of alcohoL/acid was 2.5： 1, reaction time was 3 h ,the amount of catalyst was 0.4%. Under this conditions, the yield of dioctyl glutaricate was up to 96.0 %.