Carbon dioxide adsorbent and application thereof

A carbon dioxide and adsorbent technology, which is applied in the field of carbon dioxide treatment in air pollution control, can solve the problems of limited adsorption capacity and low content of activated carbon surface groups, and achieve the effects of excellent regeneration performance, low cost and simple operation

Inactive Publication Date: 2013-07-17
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, activated carbons have a low content of surface groups, and the CO 2 The adsorption capacity is limited

Method used

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  • Carbon dioxide adsorbent and application thereof
  • Carbon dioxide adsorbent and application thereof
  • Carbon dioxide adsorbent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Pretreatment of NaY molecular sieves: In a muffle furnace, NaY molecular sieves were calcined at 350° C. for 3.5 hours.

[0027] Add 40ml of absolute ethanol to a 200ml beaker, then add 20ml of aniline, stir and mix. Weigh 3 g of pretreated NaY molecular sieves and add them into the above mixture, stir for 2 h to mix well, and heat to 20°C. Add 58ml of ammonium persulfate aqueous solution preheated to 20°C with a concentration of 1M, carry out polymerization reaction for 20h under stirring, and keep the reaction temperature at 20°C to obtain solid particles. The solid particles were successively washed with distilled water and ethanol, and dried at 75°C.

[0028] Put the dried solid particles into a tube furnace, blow in nitrogen, and raise the temperature to 700°C at 5°C / min. The carbonization reaction time of solid particles at 700°C is 3h. The carbonization reaction product was repeatedly washed with 40% HF, then washed with a large amount of distilled water and e...

Embodiment 2

[0031] Pretreatment of HY-type molecular sieves: In a muffle furnace, HY-type molecular sieves were calcined at 200°C for 8 hours.

[0032] Add 40ml of absolute ethanol to a 200ml beaker, then add 15ml of aniline, stir and mix. Weigh 3g of pretreated HY type molecular sieve and add it into the above mixture, stir for 5h to mix, heat to 90°C and keep it warm. Add 58ml of ammonium persulfate aqueous solution (concentration: 1M) preheated to 90°C, and carry out polymerization reaction at 90°C for 10 hours while stirring to obtain solid particles. The solid particles were successively washed with distilled water and ethanol, and dried at 80°C.

[0033] Put the dried solid particles into a tube furnace, blow in nitrogen gas, and raise the temperature to 750°C at a rate of 2°C / min. The carbonization reaction time of solid particles at 750°C is 3h. The carbonization reaction product was repeatedly washed with 40% HF, then washed with a large amount of distilled water and ethanol u...

Embodiment 3

[0036] NH 4 Pretreatment of Y-type molecular sieve: In the muffle furnace, NH 4 Y-type molecular sieves were calcined at 600°C for 1h.

[0037] Add 40ml of absolute ethanol to a 200ml beaker, then add 35ml of aniline, stir and mix. Weigh 3 g of pretreated NH 4 Y-type molecular sieves were added to the above mixed solution, stirred for 3 hours, and then kept at a constant temperature at 40°C. Add 58ml of ammonium persulfate aqueous solution (concentration: 1M) preheated to 40°C, the polymerization reaction starts, react at 40°C with stirring for 15h, and obtain solid particles. The solid particles were successively washed with distilled water and ethanol, and dried at 75°C.

[0038] Put the dried solid particles into a tube furnace, blow in nitrogen, and raise the temperature to 800°C at a rate of 10°C / min. The carbonization reaction of solid particles at 800°C is 2h. The carbonization reaction product was repeatedly washed with 40% HF, then washed with a large amount of ...

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Abstract

The invention aims at providing a carbon dioxide adsorbent and an application thereof, and belongs to the field of carbon dioxide processing during atmospheric pollution control. The carbon dioxide adsorbent is prepared by adopting a method comprising the following steps of: carrying out polymerization reaction on aniline and a Y-shaped molecular sieve to obtain solid granules; and carrying out carbonation reaction on the solid granules to obtaThe carbon dioxide adsorbent provided by the invention has very high carbon dioxide adsorption capacity, can be used for removing the light-concentration carbon dioxide and is obviously superior to the active carbon in removing effect, easy to operate, superior to the active carbon in regeneration property and low in cost, thereby being used for removing the light-concentration carbon dioxide contained in a gas and achieving good economic benefit and environmental benefit.

Description

[0001] Technical field: [0002] The invention belongs to the field of carbon dioxide treatment in air pollution control, and specifically relates to a carbon dioxide adsorbent and application thereof. Background technique [0003] Global warming is a major environmental problem facing mankind so far, and it is also one of the challenges facing mankind in the 21st century. Among all greenhouse gases, CO 2 High content, long life, the greatest contribution to the greenhouse effect. Therefore, controlling CO 2 The concentration is considered to be a key measure to solve the greenhouse effect. [0004] Activated carbon has a well-developed pore structure, a large specific surface area, and has a strong adsorption capacity for gases, inorganic or organic substances in solutions, and colloidal particles. It has stable chemical properties, high mechanical strength, acid resistance, alkali resistance, and High temperature, easy regeneration and other advantages, is a commonly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02C01B31/20C01B32/50
CPCY02C20/40Y02P20/151
Inventor 刘凤玲卢霞吴梦龙刘杰任玉锐郭照冰
Owner NANJING UNIV OF INFORMATION SCI & TECH
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