Magnetic ionic liquid nano-composite adsorption material for CO2 capture

A magnetic ionic liquid and nano-composite technology, applied in gas treatment, separation methods, alkali metal compounds, etc., can solve the problems of high price of ionic liquids, obstacles to large-scale application of ionic liquids, and high viscosity

Pending Publication Date: 2021-05-04
SINOPEC NANJING RES INST OF CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, due to the high price and high viscosity of ionic

Method used

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  • Magnetic ionic liquid nano-composite adsorption material for CO2 capture
  • Magnetic ionic liquid nano-composite adsorption material for CO2 capture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1.148molFeCl 3 .6H 2 O with 0.574molFeCl 2 .4H 2 O was added to 2.296mol [Bmim]Cl under nitrogen protection, and mechanically stirred to mix thoroughly. After the temperature was stabilized at 70°C, 400ml of concentrated ammonia water was gradually added dropwise to the system. Fe 3 o 4 Washed several times with 50% ethanol aqueous solution and deionized water, then magnetically separated, and vacuum-dried to obtain powdery particles.

[0034] 10 g of pan80 was dissolved in 1.0M hydrochloric acid at room temperature, 50 g of mesitylene and 100 mg of ammonium fluoride were added thereto, and the mixture was heated to 37°C with stirring for 30 min. 30g of ethyl silicate and 20g of Fe 3 o 4 Added into it and heated to 100°C for 20h, the mixture was cooled to room temperature, magnetically separated to obtain a solid product, dried in air and calcined at 400°C for 16 hours.

[0035] A certain amount of tetramethylammonium hydroxide glycinate ionic liquid and the ca...

Embodiment 2

[0042] 1.148molFeCl 3 .6H 2 O with 0.574molFeCl 2 .4H 2 O was added to 2.296mol [Bmim]Cl under nitrogen protection, and mechanically stirred to mix thoroughly. After the temperature was stabilized at 70°C, 400ml of concentrated ammonia water was gradually added dropwise to the system. Fe 3 o 4 Washed several times with 50% ethanol aqueous solution and deionized water, then magnetically separated, and vacuum-dried to obtain powdery particles.

[0043] 10 g of tween80 was dissolved in 0.8M hydrochloric acid at room temperature, 20 g of mesitylene and 200 mg of ammonium fluoride were added thereto, and the mixture was heated to 40°C with stirring for 60 min. 40g of ethyl silicate and 30g of Fe3O4 were added thereto and heated to 100°C for 24h, the mixture was cooled to room temperature, magnetically separated to obtain a solid product, dried in air and calcined at 420°C for 8 hours.

[0044] A certain amount of n-butylammonium lysine salt ionic liquid and the carrier were ...

Embodiment 3

[0048] Add 1.148mol FeCl3.6H2O and 0.574mol FeCl2.4H2O to 2.296mol [Bmim]Cl under nitrogen protection, and mix thoroughly with mechanical stirring. After the temperature was stabilized at 70°C, 400ml of concentrated ammonia water was gradually added dropwise to the system. Fe3O4 was washed several times with 50% ethanol aqueous solution and deionized water, then magnetically separated, and dried in vacuum to obtain powdery particles.

[0049] Dissolve 20 g of bis(2-ethylhexyl) sodium sulfosuccinate in 0.001M hydrochloric acid at room temperature, add 10 g of mesitylene and 150 mg of ammonium fluoride and heat the mixture to 38°C under stirring , maintain 90min. 30g NaHSi2O5.3H2O and 25g Fe3O4 were added thereto and heated to 120°C for 22h, the mixture was cooled to room temperature, magnetically separated to obtain a solid product, dried in air and calcined at 450°C for 8 hours.

[0050] A certain amount of tetrahexylammonium hydroxide threonine salt ionic liquid and the car...

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Abstract

The invention provides a magnetic ionic liquid nano composite adsorption material for CO2 capture. According to the invention, the amino-containing ionic liquid is loaded on the surface of the nano magnetic material carrier to form the composite material for capturing CO2, the amino ionic liquid can adsorb CO2 with high capacity and little loss, and the nano material can significantly improve the specific surface area and dispersity so as to improve the adsorption capacity; and the magnetic material can utilize a magnetic field to realize rapid and efficient recovery of an adsorbent. The method has the advantages of high adsorption capacity, strong stability, no ionic liquid loss, large CO2 capacity at a high temperature, rapid and efficient recovery of the adsorbent and the like, so the material has a good prospect in the field of carbon dioxide capture.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide capture, and relates to a method for capturing carbon dioxide in a gas source by an adsorption method, so as to realize high-capacity, low-energy consumption and recyclable capture of carbon dioxide. Background technique [0002] The excessive emission of carbon dioxide has caused serious negative impacts on the global climate and environment. Carbon dioxide emission control is directly related to industrial production, climate, human health and energy benefits, so research on carbon dioxide capture technology is particularly important and urgent. [0003] CO 2 The capture technology includes solvent absorption method, adsorption method, low temperature separation method, membrane separation method and so on. CO capture and separation by adsorption method 2 Low energy consumption, low investment and capture operation costs are considered to be a promising CO 2 capture technology. [00...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01J20/22B01J20/06B01J20/103B01J20/28009B01D53/02B01D2257/504Y02C20/40
Inventor 江洋洋陈曦黄钟斌孔京汪东
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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