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Ionic liquid surfactant containing ether functional groups and preparation method thereof

A surfactant and ionic liquid technology, applied in chemical instruments and methods, dissolution, organic chemistry, etc., can solve the problems of deep environmental pollution, high synthesis cost, high toxicity, etc., achieve low thermal decomposition temperature, easy adsorption, and reduce the surface tension effect

Inactive Publication Date: 2014-03-26
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The thermodynamic stability, electrostatic performance and catalytic performance of traditional ionic liquid surfactants are relatively good, but the synthesis cost is generally high, and the melting point and decomposition temperature are relatively high, and ionic liquid surfactants are better than other types of surfactants. The toxicity is high, so its accumulation in the environment may cause deep pollution to the environment

Method used

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  • Ionic liquid surfactant containing ether functional groups and preparation method thereof
  • Ionic liquid surfactant containing ether functional groups and preparation method thereof
  • Ionic liquid surfactant containing ether functional groups and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation of chloromethyl n-dodecyl ether: put a 250ml three-necked flask in an ice-water bath, first add 80.5mmol of n-dodecyl alcohol, add 80ml of n-hexane as a solvent, add 29.1mmol of paraformaldehyde, keep stirring, and then add Pass into the three-necked flask the hydrogen chloride gas produced by dripping concentrated sulfuric acid into hydrochloric acid at a rate of 1 drop / 20s, magnetically stir in an ice-water bath for 3 hours, and the reaction is completed, filter, and then distill under reduced pressure to remove the solvent n-hexane;

[0018] Add water-removed 1,1,1-trichloroethane to the prepared chloromethyl n-dodecyl ether, and 1,1,1-trichloroethane is used as the reaction solvent for the second step. Condensing device, under the condition of magnetic stirring at ≤ 5°C, slowly drop 98.6mmol of N-methylimidazole that has been dehydrated, and the reaction is over for 1 hour;

[0019] The solvent 1,1,1-trichloroethane was distilled off under reduced pr...

Embodiment 2

[0022] The preparation of chloromethyl n-tetradecyl ether: put the 250ml three-necked flask in the ice-water bath, add 94.6mol n-tetradecyl alcohol first, add 85ml n-hexane as solvent, add 41.6mmol paraformaldehyde, keep stirring, and then add Pass into the three-necked flask the hydrogen chloride gas produced by dripping concentrated sulfuric acid into hydrochloric acid at a rate of 1 drop / 20s, magnetically stir in an ice-water bath for 3 hours, and the reaction is completed, filter, and then distill under reduced pressure to remove the solvent n-hexane;

[0023] Add water-removed 1,1,1-trichloroethane to the prepared chloromethyl n-tetradecyl ether, and 1,1,1-trichloroethane is used as the reaction solvent for the second step. Condensing device, under the condition of magnetic stirring at ≤ 5°C, after slowly adding 121.8mmol of N-methylimidazole that has been dehydrated, the reaction is over for 1 hour;

[0024] The solvent 1,1,1-trichloroethane was distilled off under reduc...

Embodiment 3

[0026] Preparation of chloromethyl n-decyl ether: Put a 250ml three-necked flask in an ice-water bath, first add 126.3mmol of n-decyl alcohol, add 85ml of n-hexane as a solvent, add 34.1mmol of paraformaldehyde, keep stirring, and then pour into the three-necked flask Add hydrogen chloride gas generated by dropping concentrated sulfuric acid into hydrochloric acid at a rate of 1 drop / 20s, magnetically stir in an ice-water bath for 3 hours to complete the reaction, filter, and then distill under reduced pressure to remove the solvent n-hexane;

[0027] Add water-removed 1,1,1-trichloroethane and 1,1,1-trichloroethane to the prepared chloromethyl n-decyl ether as the reaction solvent for the second step, and turn on the condensation device, under the condition of magnetic stirring at ≤ 5°C, after slowly adding 151.56 mmol of N-methylimidazole from which water has been removed, the reaction was completed for 1 hour;

[0028] The solvent 1,1,1-trichloroethane was distilled off und...

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Abstract

The invention discloses an ionic liquid surfactant containing ether functional groups and a preparation method thereof. The invention adopts the technical scheme as follows: the ionic liquid surfactant containing the ether functional groups is prepared through quaterisation reaction of chloromethyl n-alkyl ether and N-methylimidazole, and adopts the following structure (shown in the specification), wherein n is between 8 and 14. The invention further discloses a preparation method for the ionic liquid surfactant containing the ether functional groups. The ionic liquid surfactant containing ether functional groups, disclosed by the invention, not only has certain characteristics of ionic liquid, but also has amphipathy: 1, the ionic liquid surfactant containing ether functional groups is easier to adsorb on the surface of gas / liquid, so that surface tension of water is reduced effectively; 2, the Krafft point being less than 5 DEG C is relatively low; 3, micelle is formed easily; 4, thermal decomposition temperature is low; 5, water solubility is relatively high, and the ionic liquid surfactant containing ether functional groups is unstable in an alkaline solution.

Description

technical field [0001] The invention relates to the technical field of ionic liquid surfactants, in particular to an ionic liquid surfactant containing ether functional groups and a preparation method thereof. Background technique [0002] Surfactant molecules are composed of hydrophobic groups and hydrophilic groups, and can self-polymerize into micelles, vesicles, and liquid crystal phases in solution. Due to its good polymerization ability, surfactants are widely used in emulsifiers, material synthesis, bioengineering and other industries. [0003] The thermodynamic stability, electrostatic performance and catalytic performance of traditional ionic liquid surfactants are relatively good, but the synthesis cost is generally high, and the melting point and decomposition temperature are relatively high, and ionic liquid surfactants are better than other types of surfactants. The toxicity is high, so its accumulation in the environment may cause deep pollution to the environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/42B01F17/32B01F17/18C07D233/60C09K23/42C09K23/18C09K23/32
Inventor 宋世理罗二凤张丽婕王芸菲
Owner HENAN NORMAL UNIV
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