| 乙二醇单丁醚为溶剂制备共轭亚油酸的研究 |
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| 引用本文： | 孟宪华,杨栋梁,戴艳群. 乙二醇单丁醚为溶剂制备共轭亚油酸的研究[J]. 应用化工, 2007, 36(11): 1120-1122 |
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| 作者姓名： | 孟宪华 杨栋梁 戴艳群 |
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| 作者单位： | 中南大学,化学化工学院,湖南,长沙,410083 |
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| 摘 要： | 以乙二醇单丁醚作为溶剂,KOH作催化剂,碱催化异构化法用豆油制备共轭亚油酸。通过正交设计,紫外光谱分析考察了4种因素对亚油酸转化率的影响,并得出制备高亚油酸油脂合适的工艺条件:反应温度135℃,反应时间3 h,强碱催化剂与原料质量比为0.4∶1,原料与溶剂质量比为2∶3。在此条件下,亚油酸的平均转化率达到96.8%。结果表明,该溶剂能使反应在均相体系中较为温和的温度条件下较短的时间内完成。
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| 关 键 词： | 共轭亚油酸 乙二醇单丁醚 碱异构化 |
| 文章编号： | 1671-3206（2007）11-1120-03 |
| 收稿时间： | 2007-08-26 |
| 修稿时间： | 2007-08-26 |
Preparation of CLA with 2-butoxy ethanol as solvent |
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| MENG Xian-hua,YANG Dong-liang,DAI Yan-qun. Preparation of CLA with 2-butoxy ethanol as solvent[J]. Applied chemical industry, 2007, 36(11): 1120-1122 |
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| Authors: | MENG Xian-hua YANG Dong-liang DAI Yan-qun |
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| Abstract: | Conjugated linoleic acids were prepared from soyoil by alkali isomerization using KOH as catalyst and 2-butoxy ethanol as solvent.Through the L9(34) orthogonal test,UV spectra to analyze the effects of four factors on the conversion of LA,and the optimum conditions for the preparation process of CLA-riched oil were found: reaction temperature is 135 ℃,reaction time is 3 h,m(KOH) ∶m(oil)=0.4 ∶1,and m(oil) ∶m(solvent)=2 ∶3.Under the optimum conditions,the average conversion of LA could up to 96.8%.The results show that the reaction can be carried out in a homogeneous system at lower reaction temperature during shorter reaction period with 4-butoxy ethanol as solvent. |
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| Keywords: | conjugated linoleic acids 2-butoxy ethanol alkali isomerization |
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