An efficient capture of co 2 Deep eutectic solvent system and its preparation method and application

A deep eutectic solvent and system technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, can solve problems such as weak absorption capacity of deep eutectic solvents, and achieve good recycling effects, high-efficiency reversible absorption, high The effect of absorption capacity

Active Publication Date: 2021-04-13
CHINA UNIV OF GEOSCIENCES (BEIJING)
View PDF18 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above results show that the deep eutectic solvent has a good effect on CO 2 The absorption capacity is weak

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
  • An efficient capture of co <sub>2</sub> Deep eutectic solvent system and its preparation method and application
  • An efficient capture of co <sub>2</sub> Deep eutectic solvent system and its preparation method and application
  • An efficient capture of co <sub>2</sub> Deep eutectic solvent system and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1. Efficient capture of CO 2 Preparation of the deep eutectic solvent system

[0027] High-efficiency CO capture 2 The deep eutectic solvent system, specifically as follows:

[0028] 1) Tetraethylammonium hydroxide aqueous solution is added in the round-bottomed flask, then add equimolar imidazoles. The reaction was stirred at room temperature for 2 hours. After reaction finishes, heat rotary evaporation removes moisture, and vacuum-drying, obtains the Tetraethylammonium imidazolium salt ([N 2222 ][Im]). Tetraethylammonium imidazolium salt and ethylene glycol (EG) are heated and stirred at 70°C in a molar ratio of 1:2 until the mixed system becomes liquid, and then cooled to room temperature to obtain a deep eutectic solvent , denoted as [N 2222 ][Im]-EG(1:2).

[0029] 2) Tetraethylammonium hydroxide aqueous solution is added in the round-bottomed flask, then add equimolar imidazole. The reaction was stirred at room temperature for 2 hours. After reacti...

Embodiment 2

[0035] In a glass test tube with an internal diameter of 10mm, add respectively about 2.0g of the deep eutectic solvent prepared in Example 1 of the present invention [N 2222 ][Im]-EG(1:2), then slowly introduce CO 2 Gas, the flow rate is 50mL / min, the absorption gas pressure is 0.1MPa, and the control temperature is 25°C. During the absorption process, it is weighed by an electronic analytical balance, and the quality of the glass test tube is weighed at intervals until there is no change. Calculated to absorb CO per gram of solvent 2 0.129 grams.

Embodiment 3

[0037] In a glass test tube with an internal diameter of 10mm, add respectively about 2.0g of the deep eutectic solvent prepared in Example 1 of the present invention [N 2222 ][Triz]-EG(1:2), then slowly introduce CO 2 Gas, the flow rate is 50mL / min, the absorption gas pressure is 0.1MPa, and the control temperature is 25°C. During the absorption process, it is weighed by an electronic analytical balance, and the mass of the glass test tube is weighed at intervals until there is no change. Calculated to absorb CO per gram of solvent 2 0.125 grams.

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 high-efficiency capture CO 2 The deep eutectic solvent system and its preparation method and application. The invention efficiently captures CO 2 The deep eutectic solvent system consists of quaternary ammonium salts and / or quaternary phosphonium salts and ethylene glycol. The preparation method of the described deep eutectic solvent system comprises the steps of: mixing the quaternary ammonium salt and / or the quaternary phosphonium salt with the ethylene glycol, heating until the system becomes liquid, cooling to room temperature, That is, the high-efficiency CO capture 2 deep eutectic solvent system. The present invention utilizes the high-efficiency capture CO 2 A method for absorbing carbon dioxide in a deep eutectic solvent system, specifically comprising the steps of: slowly passing a gas containing carbon dioxide into a container containing the high-efficiency capture CO 2 In the container of the deep eutectic solvent system, control the pressure and temperature, and weigh during the absorption process until the quality of the container does not change any more. The deep eutectic solvent system of the present invention is to CO 2 It has a high absorption capacity, good recycling effect, and can realize CO 2 efficient reversible absorption.

Description

technical field [0001] The invention relates to a high-efficiency capture CO 2 The deep eutectic solvent system and its preparation method and application belong to the field of gas separation. Background technique [0002] At present, the main energy sources still rely on fossil fuels such as coal, oil, and natural gas, which produce a large amount of CO during the combustion process. 2 Released into the air. With the development of society and economy, the consumption of fossil fuels is increasing, and the CO emitted into the atmosphere every year 2 Up to 30 billion tons. A CO beyond nature's own ability to coordinate 2 Emissions not only cause the greenhouse effect, but also cause significant deterioration of the ecological environment. Therefore, CO 2 The capture, separation, transformation and utilization of greenhouse gases such as greenhouse gases have received attention from all walks of life. [0003] Improve the atmospheric environment and control CO in the a...

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 Patents(China)
IPC IPC(8): B01D53/14
CPCB01D53/1412B01D53/1418B01D53/1425B01D53/1475B01D53/1493B01D2252/2023B01D2252/205B01D2252/2053B01D2252/504Y02A50/20Y02C20/40
Inventor 杨德重崔鸽吕萌戚洪彬陈洁
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap