共查询到20条相似文献,搜索用时 140 毫秒
1.
2.
3.
离子液体作为一种新的绿色溶剂,日益受到人们的重视。本文从离子液体在氢甲酰化反应中的作用出发,介绍了离子液体/有机两相催化体系、离子液体/超临界二氧化碳催化体系、固定化离子液体多相催化体系等方面研究进展,并预示了离子液体在氢甲酰化反应中的应用前景。 相似文献
4.
5.
6.
综述了近年来离子液体/有机两相均相催化的研究进展,重点介绍了基于氟硼酸根(BF4-)或氟磷酸根(PF6-)的咪唑类离子液体在均相催化加氢、氢甲酰化、齐聚、Heck反应中的应用,并对离子液体/有机两相催化工业应用的前景进行了探讨。 相似文献
7.
咪唑类离子液体及其在生物催化中的应用 总被引:1,自引:0,他引:1
咪唑类离子液体的合成,概括了离子液体中生物催化反应的特点,重点介绍咪唑类离子液体在蛋白酶催化的反应、脂肪酶催化的反应、氧化还原酶催化的反应以及其它酶催化的反应中的应用。 相似文献
8.
离子液体在改质催化裂化汽油中的应用 总被引:1,自引:0,他引:1
总结了离子液体的概念及物理化学性质,详细介绍了离子液体在改质催化裂化汽油中降烯烃、脱硫的应用;分析了离子液体在应用中存在的问题并提出了一些比较好的解决方案;展望了离子液体在绿色石油化工催化中的应用前景. 相似文献
9.
10.
11.
Francisco J. Hernández‐Fernández Antonia P. de los Ríos Luis J. Lozano‐Blanco Carlos Godínez 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2010,85(11):1423-1435
Ionic liquids have shown potential as green reaction media compared with organic solvents, mainly due to their lack of vapour pressure. In non‐aqueous enzymology, ionic liquids are opening up new fields. The advantages of using ionic liquids over the use of organic solvents as reaction medium for biocatalysis include enhancement of enzyme activity, stability and selectivity. In this work, the enzymatic synthesis of esters in ionic liquids has been extensively reviewed. Numerous examples of the application of ionic liquids as reaction medium for the enzymatic production of esters have been included. The effect of the nature of the ionic liquid on activity, selectivity and stability of enzymes which catalyze esters synthesis has been carefully analysed. Innovative reaction methodologies for the biosynthesis of esters, including ionic liquid/supercritical carbon dioxide biphasic systems and the integrated reaction/separation processes using supported liquid membranes based on ionic liquids have been revised. Copyright © 2010 Society of Chemical Industry 相似文献
12.
13.
14.
15.
16.
17.
18.
Room temperature ionic liquids are salts that are liquids at ambient temperature. They are excellent solvents for a broad
range of polar organic compounds and they show partial miscibility with aromatic hydrocarbons. Typical room temperature ionic
liquids have a stable liquid range of over 300 K and have a very low vapor pressure at room temperature. Ionic liquids that
are not hydrolyzed show a wide range of solubility in water. These unique properties have suggested that they might be useful
as environmentally benign solvents that could replace volatile organic compounds (VOC). By varying the length and branching
of the alkane chains of the cationic core and the anionic precursor, the solvent properties of ionic liquids should be able
to be tailored to meet the requirements of specific applications to create an almost infinitely set of “designer solvents”.
A review of recent applications of ionic liquids is presented along with some results of measurements of liquid-liquid equilibria
and partition coefficients with alcohols. The results are compared with predictions based on quantum mechanic calculations. 相似文献
19.