棉籽油亚临界水解反应及其动力学研究  

Hydrolysis of cottonseed oil in subcritical water and its kinetics

作　　者：杜威[1] 李法社[1,2] 姜亚[1,2] 杨梅[1,2] 包桂蓉[1,2] 李秀凤[1] 李明[3] 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]省部共建复杂有色金属资源清洁利用国家重点实验室,昆明650093 [3]云南机电职业技术学院,昆明650203

出　　处：《中国油脂》2015年第3期70-73,共4页China Oils and Fats

基　　金：教育部博士点基金项目(KKQX201352004);云南省人培基金项目(KKSY201252021);国家自然科学基金项目(51266003);973计划前期研究专项(2014CB460605)

摘　　要：以棉籽油为原料,研究了油脂在亚临界水中制备脂肪酸的水解反应及其动力学。结果表明,棉籽油亚临界水解反应最优条件为:反应温度280℃,棉籽油与水体积比1∶3,反应时间30 min;在此条件下,转化率可达98.7%。棉籽油亚临界水解反应的平均反应级数为1.149 9,活化能为108.63 k J/mol,频率因子为2.696×109,动力学模型为-dcA dt=2.696×109e108.63RTc1.149 9A。The hydrolysis of cottonseed oil in subcritical water for preparation of fatty acid and its kinetics were studied. The results showed that the optimal hydrolysis conditions of cottonseed oil in subcritical water were obtained as follows： reaction temperature 280 ℃,volume ratio of cottonseed oil to water 1∶ 3 and reaction time 30 min. Under these conditions,the conversion rate of cottonseed oil reached 98. 7%. Kinetics analysis results indicated that the average reaction order,the activation energy,frequency factor and the reaction kinetics model were 1. 149 9,108. 63 k J / mol,2. 696 × 10^ 9and-dcA/dt=2.696×10^9e^108.63/RTcA^1.149 9,respectively.

关 键 词：棉籽油 亚临界 水解反应 脂肪酸 反应动力学 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]