Renewable nano-porous adsorption material for removing carbon dioxide and preparation method of renewable nano-porous adsorption material

An adsorption material and nanoporous technology, which is applied in the field of renewable nanoporous adsorption materials and preparation, can solve problems affecting carbon dioxide removal capacity, short service life, and low amine-based loading rate, and achieve excellent carbon dioxide adsorption and renewable performance. The effect of improving the service life and preventing the loss of amine groups

Pending Publication Date: 2022-03-18
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among the modified solid amine carbon dioxide adsorption materials, the loaded solid amine material obtained by the impregnation method has the advantages of high amine group loading rate and simple and easy preparation method, but due to the small interaction force between the loaded amine group and the carrier , the amine group is easy to volatilize and lose, and the service life is short
In the solid amine material prepared by the grafting method, the amine group is connected to the carrier through chemical bonds, the structure is more reliable, the thermal stability is high, and it is easy to recycle and regenerate. However, the solid amine material prepared by this method usually has a low specific surface area and the loading rate of the amine group Small, the number of amine grafts is not easy to control, and the repeatability of the experiment is poor, which affects the removal capacity of carbon dioxide

Method used

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  • Renewable nano-porous adsorption material for removing carbon dioxide and preparation method of renewable nano-porous adsorption material
  • Renewable nano-porous adsorption material for removing carbon dioxide and preparation method of renewable nano-porous adsorption material
  • Renewable nano-porous adsorption material for removing carbon dioxide and preparation method of renewable nano-porous adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 400g molecular weight 1800 is polyethyleneimine dissolved in 3kg distilled water and forms amine solution (mass fraction is 13.3%), adds 500g fumed silica nanoporous carrier to amine solution, makes fumed silica nanoporous carrier slowly settle into the amine solution, and mix well after settling to form a homogeneous mixture;

[0034] Add 75g of polyethylene glycol with a molecular weight of 4000 to the mixture, stir at room temperature, make polyethyleneimine, fumed silica nanoporous carrier and polyethylene glycol undergo a crosslinking reaction for more than 5min, then add 35g of ethylenediamine Tetrasodium tetraacetate, stirred until a gel-like product is formed;

[0035]The product was dried at room temperature for 48 hours, shaped into granules, and then dried in an oven at 100°C for 8 hours to obtain a renewable nanoporous adsorption material for removing carbon dioxide (referred to as CO2 for short). 2 -SORBENT-1).

[0036] CO produced in this example 2 -SOR...

Embodiment 2

[0049] 400g diethanolamine is dissolved in 2.5kg ethanol and forms amine solution (mass fraction is 16%), adds 500g ordered mesoporous silica nanoporous carrier in amine solution, makes ordered mesoporous silica nanoporous carrier slow Slowly settle into the amine solution, mix evenly after settling to form a homogeneous mixture;

[0050] Add 75g of polymethacrylate with a molecular weight of 5000 to the mixture, stir at room temperature, make diethanolamine, ordered mesoporous silica nanoporous carrier and polymethacrylate undergo crosslinking reaction for more than 5min, then add 30g Glycine, stirred until a gel-like product is formed;

[0051] The product was dried at room temperature for 72 hours, shaped into columnar particles, and then dried in an oven at 50°C for 10 hours to obtain a renewable nanoporous adsorption material for removing carbon dioxide (referred to as CO2 for short). 2 -SORBENT-2).

[0052] CO produced in this example 2 -SORBENT-2 was tested as follow...

Embodiment 3

[0065] 400g triethylenetetramine is dissolved in 2.5kg chloroform to form amine solution (mass fraction is 16%), in amine solution, add 500g porous carbon particle nanoporous carrier, make porous carbon particle nanoporous carrier slowly settle down to In the amine solution, mix well after settling to form a homogeneous mixture;

[0066] Add 30g of polyacrylate with a molecular weight of 6000 to the mixture, stir at room temperature, make triethylenetetramine, porous carbon particle nanoporous carrier and polyacrylate undergo crosslinking reaction for more than 5min, then add 14g of aminopiperazine, stir , until a gel-like product is formed;

[0067] The product was dried at room temperature for 8 hours, shaped into columnar particles, and then dried in an oven at 150°C for 1 hour to obtain a renewable nanoporous adsorption material for removing carbon dioxide (referred to as CO2 for short). 2 -SORBENT-3).

[0068] CO produced in this example 2 -SORBENT-3 was tested as foll...

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Abstract

The invention relates to a renewable nano-porous adsorption material for removing carbon dioxide and a preparation method thereof, and belongs to the technical field of air purification and carbon dioxide removal. The adsorption material comprises the following components in percentage by mass: 30%-70% of a nano porous carrier, 20%-60% of an amine source, 0.1%-30% of a cross-linked polymer and 0.01%-20% of an auxiliary agent, wherein the total mass of the raw material formula of the adsorption material is 100%. Dissolving an amine source in a solvent to form an amine solution, adding the nano-porous carrier, and uniformly mixing; adding a cross-linked polymer, stirring, and carrying out cross-linking reaction for more than 5 minutes; adding an auxiliary agent, and stirring until a gelatinous product is formed; and drying, removing the solvent and molding to obtain the adsorption material. The adsorption material is high in amino content and good in stability, shows excellent carbon dioxide adsorption and renewability, can be used for eliminating carbon dioxide, is long in service life and can be produced in batches.

Description

technical field [0001] The invention relates to a renewable nanoporous adsorption material for removing carbon dioxide and a preparation method thereof, belonging to the technical field of air purification and removal of carbon dioxide. Background technique [0002] In the fresh air inhaled by the human body, the mass fraction of oxygen is 20.95%, carbon dioxide (CO 2 ) mass fraction is about 0.04%, while in the exhaled gas, the mass fraction of oxygen is reduced to about 16%, while the mass fraction of carbon dioxide is increased to about 4.4%. Carbon dioxide is a product of human metabolism. People have to exhale about 1kg of carbon dioxide every day. The volume of 1kg of carbon dioxide at normal temperature and pressure is about 555.86L. When the carbon dioxide content in human blood or in the atmosphere exceeds a certain concentration, a series of adverse reactions will be triggered. When the mass fraction of carbon dioxide is 0.10% to 0.20%, people will feel the air i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01J20/34B01D53/02
CPCB01J20/20B01J20/205B01J20/103B01J20/261B01J20/262B01J20/22B01J20/24B01J20/08B01J20/16B01J20/3483B01D53/02B01J2220/4806B01J2220/4812B01J2220/4825B01J2220/46B01D2257/504B01D2253/102B01D2253/104B01D2253/106B01D2253/20B01D2253/202Y02C20/40
Inventor 曹聪霄邓辉庞锋张龙龙程金斌魏全敏马帅明
Owner 718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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