CAJ | 학술논문

以菜籽油在亚临界水解反应中制取的脂肪酸为原料，研究菜籽油脂肪酸在超临界甲醇中的酯化反应工艺条件及动力学模型。通过单因素试验考察了反应温度、醇酸体积比、反应压力、反应时间对酯化转化率的影响，并采用超高效液相色谱法分析油酸甲酯含量的变化情况。试验结果表明菜籽油脂肪酸在超临界甲醇中酯化反应的最佳工艺条件为：反应温度270℃，反应时间40 min，反应压力25 MPa，醇酸体积比2：1。在最佳工艺条件下菜籽油脂肪酸酯化转化率超过了98%，动力学模型为- dCA dt =62.98e-20．14/ RT C1.8A 。
이채자유재아림계수해반응중제취적지방산위원료，연구채자유지방산재초림계갑순중적지화반응공예조건급동역학모형。통과단인소시험고찰료반응온도、순산체적비、반응압력、반응시간대지화전화솔적영향，병채용초고효액상색보법분석유산갑지함량적변화정황。시험결과표명채자유지방산재초림계갑순중지화반응적최가공예조건위：반응온도270℃，반응시간40 min，반응압력25 MPa，순산체적비2：1。재최가공예조건하채자유지방산지화전화솔초과료98%，동역학모형위- dCA dt =62.98e-20．14/ RT C1.8A 。
With the fatty acid prepared by hydrolyzing rapeseed oil in subcritical water as raw material, the esterification conditions and kinetics model of rapeseed oil fatty acid in supercritical methanol were studied. The effects of reaction temperature, volume ratio of methanol to rapeseed oil fatty acid, reaction pressure and reaction time on the conversion rate of the esterification were investigated by single factor ex-periment,and the content change of methyl oleate was analyzed by ultra performance liquid chromatogra-phy. The results showed that the optimal esterification conditions of rapeseed oil fatty acid in supercritical methanol were obtained as follows: reaction temperature 270 ℃, reaction time 40 min, reaction pressure 25 MPa and volume ratio of methanol to rapeseed oil fatty acid 2: 1. Under the optimal conditions, the conversion rate of rapeseed oil fatty acid was over 98% and the kinetics model was - dCA 62. 98e - 20 . 14 / RTC1. 8A . dt =62. 98e-20. 14/ RT C1. 8 A .