西南林业大学学报2017，Vol.37Issue(1)：193-198,220,7.DOI:10.11929/j.issn.2095-1914.2017.01.031
响应面法优化硫酸催化制备生物柴油的工艺研究
Study on Optimization of P reparation P rocess of Biodiesel Using Sulfuric Acid as Catalyst by Response Surface Methodology
摘要
Abstract
In this investigation, biodiesel was prepared by esterification reaction using the oleic acid as raw material and H2 SO4 as catalyst. The effects of various parameters such as reaction time, temperature, mole ratio of alcohol/oleic acid, catalyst dosage on the conversion rate of oleic acid were investigated and the preparation process of biodiesel was optimized by using response surface methodology ( RSM) . The results showed that with the increase of reaction temperature, the conversion rate of oleic acid increased, when the reaction temperature reached 70℃, the conversion rate of oleic acid was not changed. The conversion rate of oleic acid increased with the increase of the catalyst dosage of H2 SO4 , and the conversion rate was close to the maximum when the increase of the catalyst dosage was 2% of the oleic acid. With the increase of reaction time, the conversion rate of oleic acid increased gradually, and the conversion rate of oleic acid stabilized after 4 h reaction. The continuous increase of the mole ra-tio of alcohol/oleic acid caused the conversion rate of oleic acid increased continuously. When the mole ratio of al-cohol/oleic acid was 8∶1, reaction tends to be gentle. Mathematical model of response surface regression between conversion rate of oleic acid ( Y) and single factors was obtained by analyzed the test data with analysis software Design Expert 8. 0. The optimum reaction conditions were determined: the reaction time of 3. 77 h, the reaction temperature of 68. 83℃, the catalyst dosage of 4. 21%, the mole ratio of alcohol/oleic acid of 9. 26∶1 and predic-ted conversion rate of 98. 26%.关键词
硫酸/生物柴油/响应面法/优化/工艺Key words
sulfuric acid/biodiesel/response surface methodology/optimization/process分类
农业科技引用本文复制引用
张慧,吴正国,卢泽湘,廖益强,郑德勇..响应面法优化硫酸催化制备生物柴油的工艺研究[J].西南林业大学学报,2017,37(1):193-198,220,7.基金项目
国家自然科学基金项目(21506031)资助；福建省自然科学基金项目(2014J01069)资助；福建省教育厅B类项目资助。 （21506031）
