固体催化剂催化高酸值鱼油的甲酯化研究

摘要

以高酸值鱼油为原料，利用Amberlyst15固体酸催化剂在温和条件下进行酯化反应降低酸值，再由氧化钙固体碱催化剂催化转酯化得到鱼油脂肪酸甲酯。采用正交设计优化反应条件，预酯化：催化剂用量15%，反应温度75℃，n（醇）/n（油）14，反应时间1.5 h，酸值降为3.35 mg/g，二次预酯化酸值降至1.24 mg/g；酯交换：催化剂用量为10%，反应温度65℃，n（醇）/n（油）为6，反应时间为3 h，鱼油甲酯收率为93.7%。

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	刘明超
	丁辉
	高郁杰

关键词：高酸值鱼油；脂肪酸甲酯；预酯化；酯交换；固体催化剂

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.

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

Received 2015-03-26;

Corresponding Authors: 丁辉,E-mail:dinghui@tju.edu.cn。 Email: dinghui@tju.edu.cn

About author: 刘明超(1988-),男,硕士研究生,研究方向为天然产物提纯。

引用本文:

刘明超, 丁辉, 高郁杰.固体催化剂催化高酸值鱼油的甲酯化研究[J]. 化学工业与工程, 2017,34(1): 30-35

Liu Mingchao, Ding Hui, Gao Yujie.Preparation of Methyl Esters of High-Acid Fish Oil Catalyzed by Solid Catalysts[J]. Chemcial Industry and Engineering, 2017,34(1): 30-35

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