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Dibasic ion liquid containing dialkylation imidazole salt and imidazole as well as its preparing method

A technology of alkyl imidazolium salt and binary ionic liquid, which is applied in the field of chemical materials and its preparation, can solve problems such as environmental pollution and chemical reaction influence, and achieve the effect of simple operation

Inactive Publication Date: 2003-10-01
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantage is that it is extremely sensitive to water, and it must be processed and applied completely under vacuum or inert atmosphere. The presence of protons and oxide impurities has a decisive impact on the chemical reactions in this type of ionic liquid.
In addition due to AlCl 3 HCl will be released when it meets water, so this kind of ionic liquid will still pollute the environment

Method used

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  • Dibasic ion liquid containing dialkylation imidazole salt and imidazole as well as its preparing method
  • Dibasic ion liquid containing dialkylation imidazole salt and imidazole as well as its preparing method

Examples

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Effect test

Embodiment 1

[0021] Embodiment 1: Preparation of 1-methyl-3-ethylimidazolium chloride salt and imidazole binary ionic liquid [EMIM]Cl / IM

[0022] 1-Methyl-3-ethylimidazolium chloride is one of 1,3-dialkyl-substituted imidazolium salts. According to the melting point requirements of the product, weigh a certain mass of 1-methyl-3-ethylimidazolium chloride ([EMIM]Cl) and imidazole, and completely melt [EMIM]Cl in a vacuum state within the range of 70-100°C , the corresponding amount of imidazole was dissolved, stirred until uniformly mixed, to obtain binary ionic liquids containing different IM%, ie [EMIM]Cl / IM.

Embodiment 2

[0023] Example 2: Preparation of 1-methyl-3-ethylimidazolium bromide and imidazole binary ionic liquid [EMIM]Br / IM

[0024] 1-Methyl-3-ethylimidazolium bromide is one of 1,3-dialkyl substituted imidazolium salts. According to the melting point requirements of the product, weigh a certain mass of 1-methyl-3-ethylimidazolium bromide ([EMIM]Br) and imidazole, and completely melt [EMIM]Br under vacuum within the range of 70-100°C , the corresponding amount of imidazole was dissolved, and stirred until uniformly mixed to obtain binary ionic liquids containing different IM%, ie [EMIM]Br / IM.

Embodiment 3

[0025] Example 3: Preparation of 1-methyl-3-butylimidazolium chloride and imidazole binary ionic liquid [BMIM]Cl / IM

[0026] 1-Methyl-3-butylimidazolium chloride is one of 1,3-dialkyl-substituted imidazolium salts. According to the melting point requirements of the product, weigh a certain mass of 1-methyl-3-butylimidazolium chloride ([BMIM]Cl) and imidazole, and completely melt [BMIM]Cl in a vacuum state within the range of 70-100°C , the corresponding amount of imidazole was dissolved, stirred until uniformly mixed, to obtain binary ionic liquids containing different IM%, ie [BMIM]Cl / IM.

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Abstract

A binary ionic liquid containing bialkyl imidazole salt and imidazole is prepared through dissolving imidazole in fused 1,3-bialkyl imidazole salt. It can be used as green solvent with the advantage of no-corrosion and secondary pollution, and high stability in water (not generating HCl).

Description

technical field [0001] The present invention relates to a kind of binary ionic liquid containing dialkylimidazolium salt and imidazole and preparation method thereof, specifically, relate to a kind of containing 1,3-dialkyl imidazolium salt (1,3-dialkylimidazolium) and A binary ionic liquid of imidazole and a preparation method thereof belong to the technical field of chemical materials and preparation thereof. Background technique [0002] Extensive use of volatile organic solvents, such as benzene, halogenated hydrocarbons, alcohols, ketones, etc., has made traditional chemical reactions and related chemical industries a major source of environmental pollution in the world today. In view of this disadvantage, finding green alternative solvents is one of the important research contents of "green chemistry" in the 21st century. Room temperature ionic liquids are gradually recognized and accepted by people because of their friendliness to the environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C07D233/10
Inventor 单永奎戴立益华春燕叶生荣何鸣元
Owner EAST CHINA NORMAL UNIV
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