Method of preparing ionic fluids

Abstract

A method of preparing MEP including the steps of: (a) adding N-methylpyrrolidine to an excess amount of ethyl bromide located in a reactor, wherein the N-methylpyrrolidine will react with the ethyl bromide forming MEP, wherein the reaction will have a reaction temperature that can varies over time; (b) stopping addition of N-methylpyrrolidine when the excess of ethyl bromide to the N-methylpyrrolidine falls within a range of 3:1 to 1.5:1; (c) adding water to the reactor creating a two phase system to develop which includes: (i) a top layer containing aqueous MEP and (ii) a bottom layer containing ethyl bromide; (d) separating the top layer from the bottom layer yielding a first aqueous solution of MEP and a second solution of ethyl bromide; and (e) removing N-methylpyrrolidine and ethyl bromide from the first aqueous solution of MEP.

Dependencies are inferred from the claim text.