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A kind of amino acid ionic liquid molecule and its preparation method and application

A technology for ionic liquids and amino acids, which is applied in the field of preparation of amino acid ionic liquids, to achieve the effects of environmental friendliness, low cost, easy acquisition, and mild reaction conditions

Inactive Publication Date: 2018-07-10
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reported amino acid adsorption systems are all carried out in gas-liquid membrane reactors, which require a large volume of reaction equipment, which has become the biggest obstacle to its future industrial application.

Method used

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  • A kind of amino acid ionic liquid molecule and its preparation method and application
  • A kind of amino acid ionic liquid molecule and its preparation method and application
  • A kind of amino acid ionic liquid molecule and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Transfer a certain amount of C into a 250mL three-neck flask 1 ~C 20 alkane amine (water or alcohol) solution, and then drop propylene oxide (propylene oxide and alkane amine are added in equimolar amounts) with a dropping funnel, and the dropwise addition is completed in about 30 minutes. React for 2-8 hours. After the reaction is over, raise the temperature of the product mixture to 35°C, and steam the unreacted propylene oxide to obtain the tertiary aminated product solution. Add an equimolar amount of halogenated hydrocarbon according to the amount of the tertiary aminated product. (such as benzyl chloride), stir the reaction at constant temperature (40-80°C) for a certain period of time, and end the reaction. The product mixture is layered, and the lower layer is unreacted benzyl chloride. Remove traces of benzyl chloride that may remain in the water layer, remove the ether layer, and vacuum-dry the resulting solution to obtain the quaternary ammonium salt product...

Embodiment 2

[0041] Transfer a certain amount of C into a 250mL three-neck flask 1 ~C 15 alkane amine (water or alcohol) solution, then drop propylene oxide (propylene oxide and alkane amine in 2:1 molar amount) with a dropping funnel, and drop it for about 30 minutes, keep stirring at low temperature (0-5°C) The reaction was continued for 2-8 hours. After the reaction, the temperature of the product mixture was raised to 35°C, and the unreacted propylene oxide was evaporated to obtain the tertiary aminated product solution. Equimolar amounts of halogen were added according to the amount of the tertiary aminated product. After substituting a hydrocarbon (such as benzyl chloride), stir the reaction at a constant temperature (40-80°C) for a certain period of time, and end the reaction. The product mixture is layered, and the lower layer is unreacted benzyl chloride. After separation, the product solution is extracted twice with ether , to remove traces of benzyl chloride that may remain in ...

Embodiment 3

[0045] Transfer a certain amount of C into a 250mL three-neck flask 1 ~C 15 alkane amine (water or alcohol) solution, then drop propylene oxide (propylene oxide and alkane amine in 3:1 molar amount) with a dropping funnel, and drop it for about 30 minutes, keep stirring at low temperature (0-5°C) The reaction was continued for 2-8 hours. After the reaction, the temperature of the product mixture was raised to 35°C, and the unreacted propylene oxide was evaporated to obtain the tertiary aminated product solution. Equimolar amounts of halogen were added according to the amount of the tertiary aminated product. After substituting a hydrocarbon (such as benzyl chloride), stir the reaction at a constant temperature (40-80°C) for a certain period of time, and end the reaction. The product mixture is layered, and the lower layer is unreacted benzyl chloride. After separation, the product solution is extracted twice with ether , to remove traces of benzyl chloride that may remain in ...

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Abstract

The invention provides amino acid ionic liquid molecules and a preparation method and an application thereof; the amino acid ionic liquid molecules have the chemical structural general formula defined in the specification, wherein R1 is alkane, R2 is hydrocarbonyl of halide, and X is amino acid. The preparation method comprises the steps: carrying out an anion exchange reaction of a quaternary ammonium compound with an alkali for 1-4 h under a condition of the temperature of 25-30 DEG C to obtain a hydroxyl compound of quaternary ammonium salt; carrying out a dehydration reaction of the hydroxyl compound of the quaternary ammonium salt with the amino acid for 4-8 h under a condition of the temperature of 10-50 DEG C, and thus obtaining the amino acid ionic liquid molecules. The amino acid ionic liquid molecules automatically perform phase separation after absorption of acid gas and are directly repeatedly recycled, and the energy consumption is low.

Description

technical field [0001] The invention relates to the field of preparation of amino acid ionic liquids, in particular to an amino acid ionic liquid molecule and its preparation method and application. Background technique [0002] The rapid development of modern industry is accompanied by the increasingly serious pollution of human living environment and the deterioration of living environment. It is mainly reflected in the massive discharge of "waste gas, waste water, and solid waste", which leads to safety and health problems of human drinking water sources, air quality, and living environment. An obvious phenomenon that the three wastes lead to safety and health is the frequent occurrence of urban "smog" and "acid rain". Therefore, building an eco-friendly environment is a new expectation that people in modern society put forward for their living environment. Reducing the emission of three wastes and building an ecological and green homeland are forward-looking and strate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C213/08C07C215/40C07C227/18C07C229/08C07C229/24C07D233/64B01D53/02B01D53/14
CPCB01D53/02B01D53/1425B01D53/1475B01D53/1493B01D2252/20489B01D2252/20494B01D2252/30C07C213/04C07C213/08C07C215/40C07C227/18C07C229/08C07C229/24C07D233/64C07C215/12
Inventor 陈学琴江兵兵叶海峰
Owner HUBEI UNIV
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