大豆粉末磷脂的氢化

Hydrogenation of Soybean Powder Lecithin

实验采用Pd/C催化剂 ,以二氯甲烷与无水乙醇为溶剂 ,进行了大豆磷脂的催化加氢 ,探讨了影响磷脂氢化的主要因素 ,并得出较优氢化工艺条件是 :Pd/C催化剂 5 % ,反应温度 5 0℃ ,氢化压力 0 6MPa ,溶剂为二氯甲烷与无水乙醇 (V/V =3∶1) ,其用量为磷脂的 6倍 ,搅拌速度为 30 0r/min ,反应时间 3h ,磷脂碘值为 4

The catalyst of Pd on carbon and the solvent of dichloromethane and ethanol were used in this experiment to hydrogenate the soybean lecithin.Mainly effect factors of lecithin hydrogenation have been discussed,and the optimum hydrogenation condition was obtained.The condition was Pd on carbon catalyst 5%(W/W),reaction temperature 50℃,reaction pressure 0 6 MPa,solvent volume 6 times of the soybean lecithin,volume ratio of dichloromethane and ethanol 3∶1 (V/V),stir speed 300 r/min,reaction time 3 h,Iodine value 45.