Preparation of Methyl Esters of High-Acid Fish Oil Catalyzed by Solid Catalysts

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Abstract

Under mild reactive conditions, the esterification reaction of high-acid fish oil was catalyzed by Amberlyst15 to reduce the acid value, and then methyl esters of fatty acid was produced by CaO-catalyzed transesterification reaction. The optimum process conditions were obtained by orthogonal experiments. For esterification, the amount of catalyst was 15%, the reaction temperature was 75℃, the mole ratio of methanol to oil was 14, and the reaction time was 1.5 h. Acid value was dropped to 3.35 mg/g. After the second pre-esterification, acid value could be reduced to 1.24 mg/g. For transesterification, the amount of catalyst was 10%, the reaction temperature was 65℃, the mole ratio of methanol to oil was 6, and the reaction time was 3 h. The yield of fatty acid methyl esters was 93.7% under the optimum conditions.

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	Articles by authors
	Liu Mingchao
	Ding Hui
	Gao Yujie

Keywords： high-acid fish oil； methyl esters of fatty acid； pre-esterification； transesterification； solid catalysts

Received 2015-03-26;

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Liu Mingchao, Ding Hui, Gao Yujie.Preparation of Methyl Esters of High-Acid Fish Oil Catalyzed by Solid Catalysts[J] Chemcial Industry and Engineering, 2017,V34(1): 30-35

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