Method for synthesizing ionic liquid of ethanolamine lactate

A technology of ethanolamine lactate and ionic liquid, which is applied in the field of synthesis of quaternary ammonium salt ionic liquid, and can solve problems such as cumbersome operation process, unfavorable ionic liquid properties and performance experiments, and long synthesis reaction time
CN101628876AInactive Publication Date: 2010-01-20NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2010-01-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the field of chemical engineering, in particular to a method for synthesizing an ionic liquid of ethanolamine lactate used for absorbing SO2 gas. The method is characterized in that: the water-bath microwave method is adopted to prepare the ionic liquid; under the microwave action, the target product can be quickly synthesized; and for the exothermic reaction, the water bath can remove excessive heat, weaken the microwave action, and better control the reaction temperature. The synthesis reaction time of the method is greatly shortened, and the synthesis reaction can be completed in 30 minutes. The ionic liquid of ethanolamine lactate prepared by the method has the advantages of high yield, short balance time, high desulfurizing efficiency and the like, and can be widely used as a fume desulfurizer.
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Description

technical field

[0001] The invention relates to a method for absorbing SO in the field of chemical industry 2 A method for synthesizing gaseous quaternary ammonium salt ionic liquids, especially a method for synthesizing ethanolamine lactate ionic liquids. Background technique

[0002] Ionic liquids are salts composed of organic cations and inorganic or organic anions that are liquid at or near normal temperature. Ionic liquid has low vapor pressure and little pollution to the gas phase. It can replace traditional organic solvents that are volatile and harmful to the environment. It is a kind of organic solvent used to absorb SO 2 new green solvents.

[0003] At present, alcohol amine carboxylate ionic liquids are often prepared by traditional synthesis methods. Zhang Suojiang, Institute of Process Technology, Chinese Academy of Sciences, etc. proposed a synthesis method of alcohol amine carboxylate functionalized ionic liquids in Chinese patents 200510069406.6 and 2005100...

Claims

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