【作者】 刘少友；

【导师】 李振江；

【作者基本信息】 新疆大学 ， 化学工艺， 2004， 硕士

【摘要】 本文以新鲜的红花油和纯甘油为原料，在无机碱催化剂的作用下，合成红花油衍生多元不饱和脂肪酸单甘酯。按照正交试验设计法，通过宏观动力学实验，获得了该反应的优化工艺条件：甘油：红花油（mol／mol）=3：1，碱催化剂的用量为红花油质量分数的0.14％，反应温度为195℃，反应时间为70-80分钟。同时，探讨了影响合成红花油脂肪酸单甘酯产率高低的各因素，实验数据表明该合成反应存在正浓度效应。再就是，碱催化剂NaOH和NaHCO₃两者以1：1（mol／mol）时存在协同效应，并在优化条件下，成功合成了产率高达66.53％的红花油脂肪酸单甘酯，这对目前国内无溶剂法合成脂肪酸单甘酯来说产率是高的。最后，通过对分离工艺尝试性实验，获得了设备简单、能耗低、易操作、效率高的最佳分离工艺。并对反应物、反应中间体及合成产物的结构和特性进行了表征。总之，本文以单甘酯的高产率及其脂肪酸链上不饱和成分的稳定为研究核心，通过合理的实验设计，获得了红花油在碱催化剂的作用下红花油单甘酯的合成与分离的绿色工艺。更多还原

【Abstract】 The safflower oil derived multi-unsaturated fatty acid monoglyceride was synthesized from net glycerin and virgin safflower oil catalyzed by inorganic bases. By orthogonal experimental design and macro-kinetics guidence, optimization of the preparation process was made. The optimum conditions are as follows: the ratio of glycerin to safflower oil is 3:1 (molar); the base catalyst content is 0.14% (on oil, weight); the temperature is 195; the reaction time is 70-80 minutes. Meanwhile, factors influencing the preparative reactions of monoglyceride yield were investigated. Experimental data showed there exist positive concentration effect. Furthermore, synerisms of NaOH:NaHCO3(1:1, molar) was observed. As a result of the above mentioned optimization job, high yield of monoglyceride (66.53%, weight) was acheieved, which was record high up to now. Finally, an optimized separation process was tried out, which featured with simple facilities, easy operation, less energy demand, and high efficency. The structures and properties of the substrate, intermediates, and products were characterized. In conclusion, a green process for the preparation and separation of safflower based monoglyceride was investigated, by reasonable design of the experiment, optimization focused on high yield of monoglycerid and stable of multi-unsaturation moieties on the fatty acid chain were carried out.更多还原