Magnetic ionic liquid separation and concentration method

Abstract

The invention discloses a magnetic ionic liquid separation and concentration method. The method comprises that the magnetic ionic liquid is introduced into a filler pipe with magnetic medium filler and a strong magnetic field is applied to the exterior of the pipe, so that separation and concentration of the magnetic ionic liquid is realized under the action of the formed high-gradient strong magnetic field; and the method can be used for collection of a magnetic ionic liquid product or reclamation of a magnetic ionic liquid catalyst. The method is simple in process and high in treatment capacity, and saves energy consumption; and the concentration of the magnetic ionic liquid can reach over 90 weight percent.

Description

A kind of magnetic ionic liquid separation concentration method technical field The invention relates to a method for separating and concentrating magnetic ionic liquids, in particular to a high-gradient magnetic separation method for separating magnetic ionic liquids from fluids, which is applicable to fields such as biology, chemical industry, metallurgy, environmental protection and similar magnetic ionic liquid separation requirements . Background technique As a new type of green solvent, ionic liquids have some unique properties: 1) specific functions can be achieved by designing the anions and cations of ionic liquids; 2) almost no vapor pressure, non-volatile, non-flammable, good Thermally stable and easy to recycle; 3) It has good solubility for many organic compounds and metal ions, and can provide a non-aqueous, two-phase system with adjustable polarity. Magnetic ionic liquids are ionic liquids with magnetic functional groups. In addition to having all the phys...

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Problems solved by technology

However, the magnetic susceptibility of magnetic ionic liquids is very low, generally on the orde

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