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Synthesis of Conjugated Linoleic Acid Methylester using Heterogeneous Catalysts  

Yuk, Jeong-Suk (Industrial Bio-based Materials Research Group, Integrated Chemistry Research Division, KRICT)
Lee, Sang-Jun (Industrial Bio-based Materials Research Group, Integrated Chemistry Research Division, KRICT)
Kim, Nam-Kyun (Industrial Bio-based Materials Research Group, Integrated Chemistry Research Division, KRICT)
Kim, Young-Wun (Industrial Bio-based Materials Research Group, Integrated Chemistry Research Division, KRICT)
Yoon, Byeong-Tae (Industrial Bio-based Materials Research Group, Integrated Chemistry Research Division, KRICT)
Publication Information
Applied Chemistry for Engineering / v.24, no.3, 2013 , pp. 291-298 More about this Journal
Abstract
Conjugated linoleic acid methylester was synthesized through isomerization of linoleic acid methylester by using heterogeneous catalysts. As for heterogeneous catalysts, Ni supported zeolite type catalysts were used. H zoelite Y (HY) were ion exchanged with KCl aqueous solution to synthesize K zeolite Y (KY), and with impregnation method, Ni supported zeolite catalysts were synthesized. Catalysts were used after pre-treatment by using hydrogen. HY catalysts showed a high conversion at low temperatures; but a low selectivity for conjugation reaction. KY catalysts showed a low conversion at low temperatures; but a similar conversion with HY catalysts at high temperatures while a high selectivity at low temperatures. As a result, 4 wt% Ni/KY720 recorded the high conjugation yield of 63.4% at 220.
Keywords
conjugated linoleic acid methylester; isomerization; nickel supported zeolite catalyst; K zeolite; H zoelite Y;
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