Your problem is that the ionic liquids are miscible with most of the solvents you have used, in addition to their solubility in water. Therefore, you should select a hydrocarbon solvent such as n-pentane or n-hexane or aliphatic alcohol with a chain of C6-C8 such as 1-octanol. 2-phenylethanol is slightly soluble in these solvents, whereas the ionic liquid is not. Several extractions with one of the mentioned three solvents may do the job.
I strongly recommend the answer of Rafik Karaman. You may also try to extract your product using any grades of pet.ether ,(40/60C) or (60/80 C) or 80/100 C)
Thanks for papers. However my problem remains as 'phenyl ethanol' is a part of essential oil I am trying to extract , so only option work here is some of solvent or mixed solvent system which can back-extract oils from ILs
Have you tried a biphasic system, such as chloroform/water? All of your ILs are strongly hydrophilic, so they will stay in the water phase, while the aromatic alcohol should go into the organic one.
thanks for the valuable suggestion I tried di.ethyl ether + water system as with CHCl3/water system is not working, will report back once I get a result from GC
I am agree with Rafik. Try ethyl acetate/water system. You can reduce the amount of your solvent and increase the extraction times. For example 5*20 mL is better than 2*50 mL. Of course you may know this.
yes i tried ethyl acetate and ethyl acetate+water biphasic system still its not working affinity of phenyl ethanol is very strong with IL , its getting soluble in ILs at RT. and recovery is not possible
You should be able to distill off the alcohol under reduced pressure. But I must admit, I am surprised that water +Chloroform did not work, I would have suggested toluene+water.