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Nitrogen-doped porous carbon granular material for adsorbing CO2 and preparation method of nitrogen-doped porous carbon granular material

A granular material and porous carbon technology, which is applied in the field of nitrogen-doped porous carbon granular materials and its preparation, can solve problems affecting the application of porous carbon, achieve ideal CO2 adsorption stability, good CO2 adsorption capacity, and reduce costs

Pending Publication Date: 2022-03-04
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, large-scale fixed-bed adsorption devices in industrial applications are prone to large pressure drops, which seriously affects the practical application of porous carbons.

Method used

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  • Nitrogen-doped porous carbon granular material for adsorbing CO2 and preparation method of nitrogen-doped porous carbon granular material
  • Nitrogen-doped porous carbon granular material for adsorbing CO2 and preparation method of nitrogen-doped porous carbon granular material
  • Nitrogen-doped porous carbon granular material for adsorbing CO2 and preparation method of nitrogen-doped porous carbon granular material

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Experimental program
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Effect test

Embodiment 1

[0030] Preparation of nitrogen-doped porous carbon materials doped with 25% microalgae

[0031] Preparation of nitrogen-doped porous carbon materials based on poplar wood chips based on in situ synthesis, specifically:

[0032] Step 1: Pretreat poplar wood chips and microalgae, wash poplar wood chips repeatedly with water, and dry in a blast drying oven at 105°C for 24 hours, crush the dried poplar wood chips, and sieve to The size of 300-500μm is ready for use; the microalgae are dried in a blast drying oven at 45°C for 24h;

[0033] Step 2, take pretreated 10g poplar sawdust and 2.5g microalgae, soak in 50mL deionized water, stir magnetically at a speed of 200rpm for 24h, then place them in an oven for drying, and place the dried mixture in a tube In a type furnace, under a nitrogen atmosphere, the heating rate is 10°C / min, the temperature is raised to 600°C, and the temperature is kept at a constant temperature for 1 hour for pyrolysis and carbonization; after cooling to 2...

Embodiment 2

[0037] Preparation of nitrogen-doped porous carbon materials doped with 50% microalgae

[0038] Preparation of nitrogen-doped porous carbon materials based on poplar wood chips based on in situ synthesis, specifically:

[0039] Step 1, with embodiment 1;

[0040]Step 2, take spare 10g of poplar wood chips and 5g of microalgae, soak them in 50mL of deionized water, stir magnetically at a speed of 200rpm for 24h, then place them in an oven for drying, and place the dried mixture in a tube furnace , under a nitrogen atmosphere at a heating rate of 10°C / min, the temperature was raised to 600°C, and kept at a constant temperature for 1 hour for pyrolysis and carbonization; after cooling to 20-25°C, the product was repeatedly washed with deionized water and dried at 110°C , to obtain carbonized products;

[0041] Step 3, weigh the carbonized product and KOH at a mass ratio of 1:2, soak in 100mL deionized water, stir magnetically at a speed of 200rpm for 24h, and then place it in a...

Embodiment 3

[0044] Preparation of nitrogen-doped porous carbon materials doped with 200% microalgae

[0045] Preparation of nitrogen-doped porous carbon materials based on poplar wood chips based on in situ synthesis, specifically:

[0046] Step 1, with embodiment 1;

[0047] Step 2, take spare 10g of poplar wood chips and 20g of microalgae, soak them in 50mL of deionized water, stir magnetically at a speed of 200rpm for 24h, then place them in an oven for drying, and place the dried mixture in a tube furnace , under a nitrogen atmosphere at a heating rate of 10°C / min, the temperature was raised to 600°C, and kept at a constant temperature for 1 hour for pyrolysis and carbonization; after cooling to 20-25°C, the product was repeatedly washed with deionized water and dried at 110°C , to obtain carbonized products;

[0048] Step 3, weigh the carbonized product and KOH at a mass ratio of 1:2, soak in 100mL deionized water, stir magnetically at a speed of 200rpm for 24h, and then place it i...

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Abstract

The invention discloses a nitrogen-doped porous carbon granular material for adsorbing CO2 and a preparation method of the nitrogen-doped porous carbon granular material, and belongs to the field of preparation of biomass porous carbon materials. Poplar sawdust is used as a carbon source, microalgae is used as a nitrogen source, sesbania powder is used as a binder, and the nitrogen-doped porous carbon particle material with ideal CO2 adsorption stability and good mechanical properties is prepared through high-temperature carbonization, KOH activation and extrusion granulation. The preparation method is simple, the production process is environment-friendly, and the preparation method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of preparation of biomass porous carbon materials, in particular to a CO adsorption 2 Nitrogen-doped porous carbon particle material and preparation method thereof. Background technique [0002] Global warming caused by excessive carbon dioxide emissions has aroused great concern. The capture, utilization and storage of carbon dioxide is an important strategy to mitigate the threat of global warming. Among them, the capture of carbon dioxide is the most indispensable step. Amine scrubbing is currently the most mature industrial carbon dioxide capture technology, but the amine scrubbing process is not only energy-intensive, but also produces harmful by-products. Therefore, it is necessary to develop alternative carbon dioxide capture technologies. [0003] A variety of solid adsorbent materials that are expected to replace amine-based solvents have been developed. Among them, biomass porous carbon is ric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01J20/20B01J20/28019B01J20/3078B01J20/3042B01J20/3007B01D53/02B01J2220/4825B01J2220/4843B01D2257/504Y02C20/40
Inventor 孙健金晨柏生斌赵传文
Owner NANJING NORMAL UNIVERSITY
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