多不饱和脂肪酸及其酯的选择性加氢研究进展

A review on selective hydrogenation of fatty acid and its esters

摘要:

部分加氢是提高多不饱和脂肪酸及其酯性能的一种有效方式，但加氢过程中反式异构体生成会影响油脂的品质，因此，对油脂加氢反应中如何减少反式异构体生成的研究具有一定的意义。在介绍多不饱和脂肪酸及其酯加氢机理及反式异构体生成原因的基础上，综述了加氢方式、催化剂中活性组分、助剂、载体及催化剂制备方法等对反式异构体生成影响的研究新进展，对反式异构体生成的影响规律进行总结、分析，进而提出了多不饱和脂肪酸及其酯加氢过程中以减少反式异构体生成为目的的措施与方法。

Abstract:

Partial hydrogenation is an effective way for improving the performance of polyunsaturated fatty acids and polyunsaturated fatty acid esters. However, trans-isomers generated in the hydrogenation reaction, which would lead to the poor quality of hydrogenated oils and fats. It is significant to study the reducing of trans-isomers generation during the hydrogenation of fatty acid and its esters. The hydrogenation mechanism and the reason of trans-isomers generation have been introduced. On the base of this, it has reviewed the progress of reducing of trans-isomers in terms of hydrogenation method, active components, metal modifier, support materials and preparation method of catalyst. The influence rules about formation of trans-isomers were analyzed and summarized. Furthermore, the reducing methods of trans-isomers generation were proposed.