Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of catalyzing conversion of CO2 with alcohol amine bromide ionic liquid to synthesize cyclic carbonate compound

A technology for cyclic carbonates and ionic liquids, which is applied in the field of ionic liquids catalyzing the synthesis of cyclic carbonates, can solve the problems of energy consumption, increased cost and danger of high-pressure equipment, and achieves easy preparation and good biological properties. The effect of simple capacitance, operation and post-processing

Inactive Publication Date: 2018-10-26
HENAN NORMAL UNIV
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

in CO 2 A large amount of energy is consumed in the conversion process, and the use of high-pressure equipment also increases the cost and risk of conversion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of catalyzing conversion of CO2 with alcohol amine bromide ionic liquid to synthesize cyclic carbonate compound
  • Method of catalyzing conversion of CO2 with alcohol amine bromide ionic liquid to synthesize cyclic carbonate compound
  • Method of catalyzing conversion of CO2 with alcohol amine bromide ionic liquid to synthesize cyclic carbonate compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In a dry 50mL round-bottomed flask, fully dissolve 2 mol of N,N-dimethylethanolamine in 20mL of ethanol, and slowly add bromine in an equimolar amount to N,N-dimethylethanolamine using a constant pressure dropping funnel under stirring. Substitute n-butane in ethanol, heat to reflux at 80°C and stir for 13h. After the reaction, a large amount of white solids precipitated in the bottle, and the solvent was removed by suction filtration under reduced pressure. The solid was recrystallized three times with ether and ethyl acetate, filtered under reduced pressure, and the solid product was dried in a vacuum oven at 40°C for 48 hours to obtain Pure target product C 4 DMEABr.

Embodiment 2

[0019] In a dry 50mL round-bottomed flask, fully dissolve 2 mol of N,N-dimethylethanolamine in 20mL of ethanol, and slowly add bromine in an equimolar amount to N,N-dimethylethanolamine using a constant pressure dropping funnel under stirring. Substitute n-hexane ethanol solution, heat to reflux reaction at 80°C, and stir for 13h. After the reaction, a large amount of white solids precipitated in the bottle, and the solvent was removed by suction filtration under reduced pressure. The solid was recrystallized three times with ether and ethyl acetate, filtered under reduced pressure, and the solid product was dried in a vacuum oven at 40°C for 48 hours to obtain Pure target product C 6 DMEABr.

Embodiment 3

[0021] In a dry 50mL round-bottomed flask, fully dissolve 2 mol of N,N-dimethylethanolamine in 20mL of ethanol, and slowly add bromine in an equimolar amount to N,N-dimethylethanolamine using a constant pressure dropping funnel under stirring. On behalf of n-octane ethanol solution, heated to reflux reaction at 80 ° C, stirred for 13h. After the reaction, a large amount of white solids precipitated in the bottle, and the solvent was removed by suction filtration under reduced pressure. The solid was recrystallized three times with ether and ethyl acetate, filtered under reduced pressure, and the solid product was dried in a vacuum oven at 40°C for 48 hours to obtain Pure target product C 8 DMEABr.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method of catalyzing conversion of CO2 with alcohol amine bromide ionic liquid to synthesize a cyclic carbonate compound and belongs to the technical field of synthesis of cyclic carbonate compounds with catalysis of ionic liquids. The method is characterized in that: by taking the alcohol amine bromide ionic liquid as a catalyst, an ethylene oxide compound and CO2 are catalyzed at the atmospheric pressure and 90 DEG C to perform cycloaddition reaction to prepare the cyclic carbonate compound as a target product, and the alcohol amine bromide ionic liquid is repeatedly used after being recovered. In the method, the used alcohol amine bromide ionic liquid is simple and convenient to prepare and has good biocompatibility; the catalyst is high in catalytic activity and good in selectivity; and a reaction system does not have special requirements on a reaction vessel, and operation and the aftertreatment process of a catalytic system are relatively simple.

Description

technical field [0001] The invention belongs to the technical field of synthesis of cyclic carbonate compounds catalyzed by ionic liquids, in particular to a brominated alcohol amine ionic liquid catalyzed CO 2 Transformation method for synthesizing cyclic carbonates. Background technique [0002] Cyclic carbonate is a common chemical raw material, and it is also a widely used polar aprotic solvent. In addition, it can also be used as a high-efficiency electrolyte for lithium batteries. with CO 2 Synthesis of cyclic carbonate compounds with alkylene oxide compounds as raw materials is the use of CO 2 an important way. In recent years, ionic liquids have been used to catalyze CO 2 The synthesis of cyclic carbonates with alkylene oxides has been extensively studied. Peng et al first synthesized imidazolium boron tetrafluoride ionic liquid and applied it to this reaction (Peng J J, Deng Y Q.Cycloaddition of carbon dioxide to propylene oxidecatalyzed by ionic liquids[J].New...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07D317/36B01J31/02
CPCB01J31/0285C07D317/36Y02P20/584
Inventor 朱安莲唐明洁李凌君王静怡赵扬
Owner HENAN NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com