Formed carbon dioxide absorbing material and preparation method thereof

An adsorption material, carbon dioxide technology, applied in the direction of adsorption, chemical instruments and methods, separation methods, etc., can solve the problems of inconvenient use, loss, and affecting adsorption efficiency, etc., achieve high efficiency, high stability, and facilitate storage and recycling effects

Inactive Publication Date: 2010-08-18
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, these mesoporous molecular sieve adsorption materials are all in powder form. During the adsorption process of carbon dioxide, especially for the adsorption in the air flow state, it is very inconvenient to use. efficiency
If the traditional extrusion molding technology is used for processing, on the one hand, the addition of the binder will affect the properties of the mesoporous molecular sieve channels;

Method used

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  • Formed carbon dioxide absorbing material and preparation method thereof
  • Formed carbon dioxide absorbing material and preparation method thereof
  • Formed carbon dioxide absorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] At room temperature, 2g P123(EO 20 PO 70 EO 20 ) was dissolved in a solution of 60g 2Mol / L HCl and 15g water, slowly added 4.25g tetraethyl orthosilicate while stirring at 40°C, stirred for two minutes, added 8g cotton, and stood at 40°C for 48h. Cool, wash and dry at room temperature to obtain a formed mesoporous molecular sieve-cotton fiber composite material, referred to as S1 / C. Take 0.2g of S1 / C sample and add it to 0.2g of tetraethylenepentamine in 10g of ethanol solution, stir and reflux at 80°C for 2h, then evaporate to dryness at 80°C to obtain a sample loaded with 50% (wt) amine. Samples with different loadings of tetraethylenepentamine were prepared in the same way. The obtained sample is denoted as S1 / C-X, and X represents the weight percent content of tetraethylenepentamine in the sample. The obtained samples were subjected to gas chromatography for CO 2 Adsorption measurements, the adsorption data are listed in Table 1.

Embodiment 2

[0032] At room temperature, dissolve 2g of P123 in a solution of 60g of 2Mol / L HCl and 15g of water, slowly add 4.25g of tetraethyl orthosilicate while stirring at 40°C, stir for two minutes, add 8g of cotton, and let stand at 40°C 24h, then stand at 60°C for 24h. Cool, wash and dry at room temperature to obtain a formed mesoporous molecular sieve-cotton fiber composite material, referred to as S2 / C. Take 0.2g of S2 / C sample and add it into 0.2g of tetraethylenepentamine in 10g of ethanol solution, stir and reflux at 80°C for 2h, then evaporate to dryness at 80°C to obtain a sample loaded with 50% (wt) amine. Samples with different loadings of tetraethylenepentamine were prepared in the same way. The obtained sample is denoted as S2 / C-X, and X represents the weight percent content of tetraethylenepentamine in the sample. The obtained samples were subjected to gas chromatography for CO 2 Adsorption measurements, and the adsorption data are listed in Table 3.

Embodiment 3

[0038] At room temperature, dissolve 2g of P123 in a solution of 60g of 2Mol / L HCl and 15g of water, slowly add 4.25g of tetraethyl orthosilicate while stirring at 40°C, stir for two minutes, add 9g of cotton, and stand at 40°C 24h, then stand at 80°C (or 100°C) for 24h. Cool, wash and dry at room temperature to obtain a mesoporous molecular sieve-cotton fiber composite material, referred to as S3 / C (S4 / C). It was found that under these two conditions, the cotton fibers had been hydrolyzed and the samples had a powdery appearance and were not effectively shaped.

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Abstract

The invention relates to a formed carbon dioxide absorbing material. Cotton fiber is taken as carrier, in situ synthesis is carried out to obtain mesoporous molecular sieve-cotton fiber composite material, and then organic amine is coated, thus obtaining organic amine-mesoporous molecular sieve-cotton fiber formed composite material, namely the formed carbon dioxide absorbing material. In the organic amine-mesoporous molecular sieve-cotton fiber formed composite material of the invention, larger space is kept between cotton fibers, the mesoporous molecular sieves dispersed on the cotton fiber can not be extruded together and further carbon dioxide is difficult to be diffused into interior particle, thus carbon dioxide absorption can be effectively carried out. The organic amine-mesoporous molecular sieve-cotton fiber composite material formed carbon dioxide absorbing material of the invention has the characteristics of high efficiency and high stability. The invention also discloses a preparation method thereof.

Description

technical field [0001] The invention relates to a molding material capable of absorbing carbon dioxide, in particular to an organic amine-mesoporous molecular sieve-cotton fiber composite material for efficiently absorbing carbon dioxide. Background technique [0002] With the development of modern industry, the "greenhouse effect" is becoming more and more serious, which has caused serious harm to the living environment of human beings. The culprit is the excessive emission of carbon dioxide. Excessive carbon dioxide will also affect people's normal life. Studies have shown that when the carbon dioxide content rises to 2%, people will feel a rapid heartbeat and drowsiness, and when the carbon dioxide content rises to 3%, people may die of poisoning. In confined space survival systems, such as submarine cabins, manned spacecraft, dance halls, etc., because people's normal breathing will continuously produce carbon dioxide, the harm of carbon dioxide is particularly prominen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/04
CPCY02C10/08D06M11/79D06M2400/02Y02C20/40
Inventor 淳远韩坤坤马丽朱建华蒋平
Owner NANJING UNIV
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