蓖麻油催化脱水的研究

Study on Catalytic Dehydration of Castor Oil

以硫酸氢钠为催化剂 ,亚硫酸氢钠为助剂对蓖麻油进行催化脱水 ,考察了催化剂、反应温度和反应时间对脱水效果的影响 ,采用正交试验法优化的脱水工艺条件为 :反应温度为 2 0 0℃ ,硫酸氢钠用量为 1 5% ,亚硫酸氢钠用量为 1% ,反应时间为 2h。得到的脱水蓖麻油羟值低 。

Castor oil was dehydrated using NaHSO 4 as cataiyst and NaHSO 3 as promoters.The effect of catalyst,reaction temperature and reaction time on the dehydration reaction have been investigated.the orthogonal experiment result shows that the optimum dehydration condition were as follows:the amount of NaHSO 3 and NaHSO 4 used as catalysts was 1 5% and 1% respectively,reaction time was 2 h and reaction temperature was 200℃.The dehydration castor oil obtained has lower hydroxyl value and better color