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Three-ingredient eutectic ionic liquid and preparation method thereof

An ionic liquid, eutectic technology, used in the preparation of urea derivatives, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of less research on anionic functionalization, increase in compound viscosity, etc., and achieve melting point and viscosity. Low, short response time, high stability effect

Inactive Publication Date: 2013-07-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In most cases, the design of new functional ionic liquids is to introduce functional groups into the cationic part, but this generally makes the viscosity of the compound much higher, while the functionalization of anions is less studied

Method used

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  • Three-ingredient eutectic ionic liquid and preparation method thereof
  • Three-ingredient eutectic ionic liquid and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 0.59 g (0.01 mol) of acetamide (AA), 1.36 g (0.01 mol) of ZnCl 2 Mix it with 1.74 g (0.01 mol) of 1-butyl-3-methylimidazole chloride, heat to 100°C, and keep it for 3 hours to form a colorless transparent clear liquid to obtain the ionic liquid [Bmim][Zn(AA)Cl 3 ]. It is a colorless transparent liquid at room temperature (20°C).

Embodiment 2

[0026] 0.60 g (0.01mol) urea, 1.36 g (0.01mol) ZnCl 2 , mixed with 1.74 g (0.01 mol) of 1-butyl-3-methylimidazole chloride and heated, microwave heated to 140 ° C, a colorless transparent liquid was formed, kept for 2 hours, and the ionic liquid [Bmim][Zn(Urea)Cl was obtained 3 ]. It is a colorless transparent liquid at room temperature (20°C).

Embodiment 3

[0028] 1.20 grams (0.02mol) of urea, 2.25 grams (0.01mol) of ZnBr 2 , and 2.19 grams (0.01mol) of 1-butyl-3-methylimidazole bromide were mixed and heated, heated to 110°C by microwave to form a colorless transparent liquid, and kept for 2 hours to obtain the ionic liquid [Bmim][Zn(Urea) 2 Br 3 ]. It is a colorless transparent liquid at room temperature (20°C).

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Abstract

The invention relates to three-ingredient eutectic ionic liquid and a preparation method thereof. The three-ingredient eutectic ionic liquid consists of ILX, MH and HBD, wherein ILX is ionic liquid with negative-monovalent halogen ions which serve as negative ions, MH is transition metal haloid, and HBD is a compound with multiple hydrogen bonds. The preparation method comprises the following steps of: uniformly mixing ILX, MH and HBD according to the molar ratio of 1: 1: n (n= 0.5-4), heating up to the temperature of 100-140 DEG C, and then, carrying out heat preservation for 2-4 hours until a mixture is completely dissolved. According to the ionic liquid disclosed by the invention, the melting point is extremely low, the viscosity is low, the conductivity is high, the dissolution performance is good, and the ionic liquid has Lewis acidity and catalysis performance, so that the ionic liquid can be widely applied to organic synthesis reaction, the preparation of nano and mesoporous materials, gas absorption and the like; and the preparation process is simple, the raw materials are readily available, the cost is low, no organic solvents are used and no toxic substances are emitted during reaction, no byproducts are produced, and the ionic liquid is biodegradable, so that the ionic liquid is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of ionic liquid and its preparation, in particular to a three-component eutectic ionic liquid and its preparation method. Background technique [0002] Ionic liquids are brand-new medium and soft functional materials developed under the framework of green chemistry in recent years. Due to its low vapor pressure, good thermal stability, high electrical conductivity, and the ability to maintain a liquid state in a long temperature range, it has attracted extensive attention in the fields of separation and extraction, catalysis, photophysics, and magnetism. Ionic liquids generally refer to substances completely composed of ions that are liquid at room temperature or below 100°C. Traditionally, they are composed of organic cations and inorganic anions. In recent years, there have also been some neutral molecules mixed with ionic compounds that can also form deep eutectic systems with ionic liquid properties, called deep ...

Claims

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Application Information

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IPC IPC(8): C07D233/58C07F9/54C07C215/40C01G51/08C01G9/04C01G53/09C07C233/05C07C275/06C07C273/02C07C31/22C07C55/08
Inventor 邢彦军刘玉婷戴瑾瑾
Owner DONGHUA UNIV
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