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《Technology & Development of Chemical Industry》 2008-02
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Preparation of Conjugated Linoleic Acid with 2-Butoxy Ethanol as Solvent

MENG Xian-hua,YANG Dong-liang,DAI Yan-qun (College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China)  
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 analyzed the effect of four factors on the conversion rate of LA,and the optimum conditions for the preparation of CLA-riched oil were found: reaction temperature 135 ℃,reaction time 2.85 h,m(KOH)∶m(oil)=0.4∶1,and m(oil)∶m(solvent)=2∶3.Under the optimum conditions,the average conversion rate of CLA could exceed 96.8%.The results showed that the reaction could be carried out in a homogeneous system at lower reaction temperature during shorter reaction period with 4-butoxy ethanol as solvent.
【CateGory Index】: TQ225.2
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