Study on the Selectivity of Esterification for the Preparation of Dehydrated Sorbitol Monooleate

Lu Ming,  Shen Wei
(Nanjing University of Science and Technology, Chemical Engineering School, Nanjing 210094)

Abstract Several kinds of acidic catalysts、alkaline catalysts and oxidant catalysts used in the esterification of sorbitol and oleic acid are studied. The result shows:that the product made by using the acidic catalyst contains more proportion of dioleate, while the product made by using the alkaline catalyst or the oxidant catalyst contains more proportion of monooleate. In particular the monooleate proportion in the product made by using zinc oxide as catalyst is up to 91%.
Key words Span-80, Esterification, Catalyst, Selectivity

制备失水山梨醇单油酸酯的选择性酯化反应

陆 明    沈 薇
(南京理工大学化工学院  南京  210094)

摘要 研究了几种酸性催化剂(H₂SO₄、H₃PO₄、CH₃C₆H₄SO₃H)、碱性催化剂(NaOH、Na₂CO₃、NaHCO₃)和氧化物(ZnO、Al₂O₃、TiO₂)对山梨醇和油酸的催化酯化反应。结果表明：用酸性催化剂催化的酯化反应产品中的双油酸酯的比例较高；用碱性催化剂或氧化物催化剂催化的酯化反应产品中的单油酸酯的比例较高，其中用ZnO催化所得产品中的单油酸酯的比例可达91%。
关键词 Span-80 酯化反应 催化剂 选择性