Bronsted acidic ion liquid using polyamine as cation and preparation method thereof

A technology of acidic ionic liquids and cations, applied in the preparation of amino compounds from amines, organic chemistry, etc., can solve undiscovered problems and achieve the effects of green process, simple preparation, and strong adjustability

Inactive Publication Date: 2008-07-02
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently reported ionic liquids mainly include dialkylimidazoles and alkylpyridines, and no report on ionic liquids with polyammonium as cations has been found so far.

Method used

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  • Bronsted acidic ion liquid using polyamine as cation and preparation method thereof
  • Bronsted acidic ion liquid using polyamine as cation and preparation method thereof
  • Bronsted acidic ion liquid using polyamine as cation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Synthesis of Formate Ionic Liquid of Triethylenetetramine

[0025] In a round-bottomed flask equipped with magnetic stirring, add 14.7ml (0.1mol) of triethylenetetramine, then add 50ml of absolute ethanol, stir for 30min under ice-water bath conditions, then add 85% formic acid solution dropwise while stirring 17.8ml (0.4mol), a white precipitate appeared, continued to drop 2ml of formic acid solution, reacted for about 10 minutes, and filtered with suction, the filtered solid matter was the formate ionic liquid of triethylenetetramine. The reaction temperature is 0-5°C. Yield: 85%. The reaction formula is:

[0026]

Embodiment 2

[0028] Synthesis of Acetate Ionic Liquid of Triethylenetetramine

[0029] In a round bottom flask equipped with magnetic stirring, add 14.7ml (0.1mol) of triethylenetetramine, then add 50ml of absolute ethanol, stir for 30min under ice-water bath conditions, then add 99.5% acetic acid 23.0 dropwise while stirring ml (0.3mol), a white precipitate appears, continue to drop 2ml of acetic acid solution, react for about 10 minutes, and filter with suction, the filtered solid substance is the acetate ionic liquid of triethylenetetramine. The reaction temperature is 0-5°C. Yield: 79%. The reaction formula is:

[0030]

Embodiment 3

[0032] Synthesis of Nitrate Ionic Liquid of Diethylenetriamine

[0033] In a round-bottomed flask equipped with magnetic stirring, add 10.8ml (0.1mol) of diethylenetriamine, then add 50ml of absolute ethanol, stir for 30min under ice-water bath conditions, then add 29.1g of 65% nitric acid dropwise while stirring (0.3mol), white precipitate occurs, continue to dropwise add nitric acid 2ml, after reacting for about 10 minutes, suction filtration, the solid matter of filtering is the nitrate ionic liquid of triethylenetetramine. The reaction temperature is 0-5°C. Yield: 82%. The reaction formula is:

[0034]

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Abstract

The invention discloses a BrPhinsted acidic ionic liquid which takes multi-ammonium as cation and a preparation method thereof; the ionic liquid is one step prepared through neutralization reaction between multi-ammonium and inorganic acid or organic acid. The invention has the advantages of low cost, simple preparation, green process, and suitability for massive production. The ionic liquid has potential practical application prospect in electronic optical and photoelectric material, energy, resource and environment and life science, etc.

Description

technical field [0001] The present invention relates to a kind of polybasic ammonium as cation The acid ionic liquid and its preparation method belong to the technical field of new chemical materials and its preparation. Background technique [0002] Ionic liquids mainly refer to organic molten salts with a melting point below 100°C, which are usually composed of organic cations and inorganic or organic anions with asymmetric structures. Generally, since many ionic liquids are liquid at room temperature, they are also called room temperature ionic liquids. In recent years, ionic liquids have been widely concerned by chemists and material scientists for three reasons: (1) The worldwide environmental pollution is increasing and people's awareness of environmental protection is increasing. According to reports, the world uses about $6 billion worth of organic solvents annually. Due to the volatility of organic solvents, a large amount of organic solvents evaporate into the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/63C07C209/68
Inventor 邓友全张庆华王瑞峰陈正件杨静
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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