Monolithic solid amine adsorbent and preparation method thereof

A solid amine and adsorbent technology, which is applied in the field of monolithic solid amine adsorbent and its preparation, can solve the problems of difficult large-scale application and high energy consumption, and achieve the effects of excellent adsorption capacity, low energy consumption and easy availability of raw materials

Pending Publication Date: 2022-05-24
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the shortcomings of the existing carbon dioxide adsorbents for treating industrial flue gas that are difficult to be applied on a large scale or have high energy consumption, and provide an integral solid amine adsorbent and a preparation method thereof

Method used

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  • Monolithic solid amine adsorbent and preparation method thereof
  • Monolithic solid amine adsorbent and preparation method thereof
  • Monolithic solid amine adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 7 g of tetraethylene pentamine was dissolved in 100 ml of absolute ethanol and stirred for 30 min. 3 g of the carrier obtained in Comparative Example 1 was added to the above solution, and stirring was continued for 30 min. Utilize the rotary evaporator to evaporate the ethanol, the temperature is 45 °C, and after removing the ethanol, the monolithic CO can be obtained 2 adsorbent, the adsorbent CO 2 The adsorption capacity is 190mg / g and the heat capacity is 2.79 J g -1 K -1 , to test the product, get Figure 1-4 .

Embodiment 2

[0059] Dissolve 3 g of tetraethylene pentamine in 100 ml of absolute ethanol and stir for 30 min. 3 g of the carrier obtained in Comparative Example 1 was added to the above solution, and stirring was continued for 30 min. Utilize the rotary evaporator to evaporate the ethanol, the temperature is 45 °C, and after removing the ethanol, the monolithic CO can be obtained 2 adsorbent, the adsorbent CO 2 The adsorption capacity is 154mg / g and the heat capacity is 2.40 J g -1 K -1 .

Embodiment 3

[0061] Dissolve 3 g of tetraethylene pentamine in 100 ml of absolute ethanol and stir for 30 min. 3 g of the carrier obtained in Comparative Example 2 was added to the above solution, and stirring was continued for 30 min. Utilize the rotary evaporator to evaporate the ethanol, the temperature is 45 °C, and after removing the ethanol, the monolithic CO can be obtained 2 adsorbent, the adsorbent CO 2 The adsorption capacity is 144mg / g and the heat capacity is 2.35 J g -1 K -1 .

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Abstract

The invention discloses a monolithic solid amine adsorbent and a preparation method thereof. The monolithic solid amine adsorbent comprises a hollow silicon dioxide microsphere skeleton and an amination reagent loaded on the surface of the skeleton. The monolithic solid amine adsorbent prepared by the invention has the advantages of easily available raw materials and low cost, and is easy to realize large-scale preparation. The prepared carbon dioxide adsorbent has the advantages of being high in mechanical strength, good in plasticity, excellent in adsorption capacity, high in cycling stability, capable of reducing pressure drop in practical application and the like when applied to the industrial carbon dioxide trapping process, the adsorption capacity can reach 180 mg g <-1 >, the adsorption capacity is stable and maintained to be 160 mg g <-1 > or above in continuous 50 times of adsorption and desorption cycles, and the carbon dioxide adsorbent has application prospects in the field of CO2 trapping.

Description

technical field [0001] The invention relates to the technical field of carbon dioxide adsorption, in particular to a monolithic solid amine adsorbent and a preparation method thereof. Background technique [0002] Today's energy structure is dominated by fossil fuels, which inevitably generates a large amount of industrial flue gas. The subsequent problems such as global warming and ocean acidification have attracted great attention. The massive emission of greenhouse gases such as carbon dioxide is considered to be the main cause of the greenhouse effect. Based on the current energy structure dominated by fossil energy, the efficient separation of carbon dioxide from flue gas plays a vital role in improving the climate. [0003] Absorption, adsorption and membrane separation technologies are the three main carbon dioxide capture technologies. Absorption method is currently the most common and mature technology in the industry, but the energy consumption and corrosion prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01J20/103B01J20/22B01J20/28021B01D53/02B01D2257/504B01D2258/0283Y02C20/40
Inventor 岳海荣喻树楠马奎周昶安宋磊
Owner SICHUAN UNIV
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