二氢月桂烯水合工艺的研究进展

Development in the hydration of dihydromyrcene

二氢月桂烯醇(DHMOH)是当前国际上最常用的大宗香料之一,其主要生产方法是通过二氢月桂烯(DHM)水合而成。本文介绍了由DHM生成DHMOH的两种方法:间接水合法和直接水合法近年来的研究情况,对其各自的优缺点和相关研究进展进行了综述。直接水合法以其对环境危害小、设备投资小、易连续生产等优点,是近年来的研究重点。针对直接水合法研究中主要存在的溶剂用量大、分离能耗高等问题,介绍了一些在新溶剂、新工艺方向的研究进展。其中,离子液体、超临界CO2等新型溶剂以其溶解度好、易分离等优点,在烯烃水合方面具有很好的应用前景。莰烯、α-蒎烯等与DHM结构类似的烯烃,其参与水合过程的反应机理与DHM相似,因此这些烯烃水合方面的研究常常可以互相借鉴。

Dihydromyrcol （DHMOH） is one of the most widely-used perfumes in the world,and is mainly produced by the hydration of dihydromyrcene （DHM）. This paper is to introduce two main approaches to produce DHMOH from DHM,the direct hydration and the indirect hydration,and the recent researches in this field. The direct hydration becomes the main focus in recent studies for less equipment corrosion,lower equipment investment and more environment friendliness. The researches on new solvents and technology are presented to solve the problems of large solvent demand and high energy consumption in the direct hydration. Among them,ease-to-separated novel solvents,such as ionic liquid and supercritical CO2,are quite promising in the hydration of alkene. Camphene,α-pinene and other terpenes,which share similar chemical structures with DHM,follow almost the same hydration mechanism with DHM,so the researches on the hydration of dihydromyrcene can be applied to these terpenes in most cases and vice versa.