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Preparation method and application of nitrogen-doped activated carbon fibrofelt

An activated carbon fiber felt, nitrogen-doped technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of high cost, complicated preparation method, unsuitable for large-scale industrial production, etc. Simple preparation method

Active Publication Date: 2020-12-04
江苏科力特环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The nitrogen-doped carbon materials currently reported mainly include low-dimensional materials such as nitrogen-doped carbon nanotubes, nitrogen-doped graphene, and nitrogen-doped carbon quantum dots. These materials have superior performance, but the preparation method is relatively complicated and the cost is high. , not suitable for large-scale industrial production

Method used

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  • Preparation method and application of nitrogen-doped activated carbon fibrofelt
  • Preparation method and application of nitrogen-doped activated carbon fibrofelt
  • Preparation method and application of nitrogen-doped activated carbon fibrofelt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Take the BET specific surface area as 1300m 2 / g raw material viscose fiber mat 4.0011g, soak in 400mL solution containing urea (18.4g) and formaldehyde (37% formaldehyde, 25mL) molar ratio 1:3, add 18.4mL 1M formic acid solution, react for 90min;

[0038] (2) Put the product in 250mL of 2M hydrochloric acid solution, solidify for 30min, take it out, wash with water, and dry at 105°C for 1h;

[0039] (3) Put it into a muffle furnace, protect it with nitrogen at a flow rate of 25mL / min, carbonize at 400°C, heat up at a rate of 5°C / min, keep it warm for 1h, keep the nitrogen atmosphere until the furnace temperature drops to room temperature, and take out the product;

[0040] (4) Put the product into 250mL carbon residue cleaning solution, the mass ratio of carbon residue cleaning solution is alcohol ether surfactant (AEO-9), solvent oil, ethanolamine and water 10:1:1:88, at room temperature After ultrasonic cleaning for 30 minutes, fully wash with water, and dry at ...

Embodiment 2

[0043] (1) Take the BET specific surface area as 1500m 2 / g 5.0021g of raw viscose fiber felt, soaked in 500mL solution containing urea (23.0g) and formaldehyde (37% formaldehyde, 21mL) with a molar ratio of 1:2, added 22.8mL of 1M formic acid solution, and reacted for 90min;

[0044] (2) Put the product in 250mL of 2M hydrochloric acid solution, solidify for 30min, take it out, wash with water, and dry at 105°C for 1h;

[0045] (3) Put in a muffle furnace, protect with nitrogen at a flow rate of 25mL / min, carbonize at 600°C, heat up at a rate of 5°C / min, keep warm for 1h, keep the nitrogen atmosphere until the furnace temperature drops to room temperature, and take out the product;

[0046] (4) Put the product into 250mL carbon residue cleaning solution, the mass ratio of carbon residue cleaning solution is alcohol ether surfactant (AEO-9), solvent oil, ethanolamine and water 10:1:1:88, at room temperature After ultrasonic cleaning for 30 minutes, fully wash with water, and ...

Embodiment 3

[0049] (1) Take the BET specific surface area as 1800m 2 / g raw material viscose fiber felt 3.5007g, soak in 350mL solution containing urea (18.0g) and formaldehyde (37% formaldehyde, 24.5mL) molar ratio 1:3, add 18mL 1M formic acid solution, react for 90min;

[0050] (2) Put the product in 250mL of 2M hydrochloric acid solution, solidify for 30min, take it out, wash with water, and dry at 105°C for 1h;

[0051] (3) Put it into a muffle furnace, protect it with nitrogen at a flow rate of 25mL / min, carbonize at 800°C, heat up at a rate of 5°C / min, keep it warm for 1h, keep the nitrogen atmosphere until the furnace temperature drops to room temperature, and take out the product;

[0052] (4) Put the product into 250mL carbon residue cleaning solution, the mass ratio of carbon residue cleaning solution is alcohol ether surfactant (AEO-9), solvent oil, ethanolamine and water 10:1:1:88, at room temperature After ultrasonic cleaning for 30 minutes, fully wash with water, and dry at...

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Abstract

The invention discloses a preparation method and application of a nitrogen-doped activated carbon fibrofelt, which comprises the following steps: soaking a viscose-based activated carbon fibrofelt ina mixed solution of urea and formaldehyde, and adding a formic acid solution to react; taking out the activated carbon fibrofelt, curing the activated carbon fibrofelt in a hydrochloric acid solution,taking out, washing and drying; carrying out carbonization treatment in an inert gas atmosphere; and after carbonization treatment, putting a residual carbon cleaning solution, cleaning and drying toobtain the nitrogen-doped activated carbon fibrofelt. The invention provides the preparation method of the viscose-based nitrogen-doped ACF felt with large-area distribution, high surface area and high nitrogen content, and the method is simple and controllable, low in cost and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of activated carbon fiber materials, and in particular relates to a preparation method and application of a nitrogen-doped activated carbon fiber felt. Background technique [0002] Activated Carbon Fiber (ACF) is developed from Carbon Fiber (CF), and is a high-value industrial activated carbon material with a special form. Due to the rich microporous structure on the fiber surface, ACF has a variety of uses, including material concentration, fluid purification, gas separation, energy storage, health protection, etc. At the same time, because the unique textile form of ACF also exhibits the mechanical properties of being able to bend and fold arbitrarily, it is easy to process, transport and use in engineering applications. [0003] In recent years, the doping modification of carbon materials to obtain unique and excellent properties has become a research hotspot. Nitrogen is located next to carbon on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01D53/02B01D2253/102B01D2257/504B01J20/0259B01J20/20B01J2220/4806B01J2220/4812Y02C20/40
Inventor 葛元宇刘世文陈婷婷赵涛
Owner 江苏科力特环保科技有限公司
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