Amine functionalized activated carbon material as well as preparation method and application thereof

An activated carbon and amine functional technology, which is applied in the field of adsorption and separation of carbonyl sulfide gas, can solve the problems of high cost, complicated preparation process, and difficult industrialization.

Active Publication Date: 2021-07-06
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Invention patent CN106902740 A discloses "a method for loading functional groups on activated carbon fibers mainly characterized by alkalinity". Prepare the sol, then impregnate the above-mentioned sol on the activated carbon, and finally obtain the activated carbon fiber with the main performance of alkalinity through aging and drying, and apply it to the adsorption of acidic pollutants. The preparation process of this method is complicated and the cost is high. Difficult to use in industrialization

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  • Amine functionalized activated carbon material as well as preparation method and application thereof
  • Amine functionalized activated carbon material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of amine functionalized activated carbon material, comprising the following steps:

[0026] 1) First, wash the granular activated carbon (ie, blue carbon, with a particle size of 0.5~1.0 cm) with deionized water until the pH is neutral;

[0027] 2) Mix 2 mL of N-[3-(trimethoxysilyl)propyl]ethylenediamine with 20 mL of deionized water, sonicate for 6 min, then add 10 g of activated carbon washed in step 1), and Reflux and stir at 80°C for 4 h, and finally vacuum-dry at 60°C for 10 h (the vacuum drying pressure is -0.08MPa), and the amine-functionalized activated carbon material is obtained.

Embodiment 2

[0029] A preparation method of amine functionalized activated carbon material, comprising the following steps:

[0030] 1) First, wash the granular activated carbon (ie, blue carbon, with a particle size of 0.5~1.0 cm) with deionized water until the pH is neutral;

[0031] 2) Mix 4 mL of N-[3-(trimethoxysilyl)propyl]ethylenediamine with 20 mL of deionized water, sonicate for 8 min, then add 10 g of activated carbon washed in step 1), and Reflux and stir at 80°C for 6 h, and finally vacuum-dry at 60°C for 10 h (the vacuum drying pressure is -0.08MPa), and the amine-functionalized activated carbon material is obtained.

Embodiment 3

[0033] A preparation method of amine functionalized activated carbon material, comprising the following steps:

[0034] 1) First, wash the granular activated carbon (ie, blue carbon, with a particle size of 0.5~1.0 cm) with deionized water until the pH is neutral;

[0035] 2) Mix 8 mL of N-[3-(trimethoxysilyl)propyl]ethylenediamine with 20 mL of deionized water, sonicate for 10 min, and then add 10 g of activated carbon washed in step 1), Reflux and stir at 80°C for 8 h, and finally vacuum-dry at 60°C for 10 h (the vacuum drying pressure is -0.08MPa) to obtain the amine-functionalized activated carbon material.

[0036] The activated carbon raw material used in step 1) of Example 3 of the present invention and the final adsorbent material were subjected to BET characterization respectively, and the specific surface area of ​​the activated carbon raw material was 435.45 m 2 / g, the specific surface area of ​​the final adsorbent material is 358.31m 2 / g. The amine functionali...

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Abstract

The invention discloses an amine functionalized activated carbon material and a preparation method and application thereof, and the preparation method of the amine functionalized activated carbon material comprises the following steps: firstly, washing activated carbon with deionized water until the pH is neutral; mixing N-[3-(trimethoxysilyl)propyl]ethylenediamine and deionized water according to a volume ratio of 1:(2.5-10), carrying out ultrasonic treatment for 6-10 min, adding the washed activated carbon, carrying out reflux stirring at 70-90 DEG C for 4-8 h, and finally carrying out vacuum drying at 60-80 DEG C for 8-12 h to obtain the amine functionalized activated carbon material. The N-[3-(trimethoxysilyl)propyl]ethylenediamine is functionalized on the activated carbon material, then the obtained amine functionalized activated carbon material is used for removing carbonyl sulfide in mixed gas, and the amine functionalized activated carbon material has the advantages of large specific surface area, high stability and simple preparation method, and has potential industrial application value.

Description

technical field [0001] The invention relates to the technical field of adsorption and separation of carbonyl sulfide gas, in particular to an amine-functionalized activated carbon material and its preparation method and application. Background technique [0002] Activated carbon is prepared by pyrolysis and activation of carbon-containing raw materials such as wood, coal and petroleum coke, usually in powder or granular form, with developed pore structure, large specific surface area and rich surface chemical functional groups. Porous amorphous carbon material with strong specific adsorption capacity. Modification of activated carbon by chemical or physical means can reduce the ash content of activated carbon and improve the adsorption capacity. Surface functional group modification is also a way of modifying activated carbon. By adding a solution containing other functional groups, it reacts with the surface groups of activated carbon itself. , to achieve the purpose of su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/32C01B32/354B01D53/04
CPCB01J20/20B01J20/28016B01J20/28061B01J20/3204C01B32/354B01D53/04C01P2006/12B01D2253/102B01D2257/306Y02C20/40
Inventor 王建国谢亮孔祥宇张乐乐李岩峰
Owner ZHEJIANG UNIV OF TECH
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