Nitrogen-doped porous carbon material and preparation method and application thereof

A porous carbon material, nitrogen-doped technology, applied in separation methods, chemical instruments and methods, and other chemical processes, etc., can solve problems such as unsuitability for industrialized large-scale production, environmental hazards, and complicated operations, and achieve convenient large-scale production. The effect of application, strong operability and simple preparation method

Inactive Publication Date: 2016-08-17
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are some disadvantages in activation, which puts higher requirements on the operation process. If it is not handled properly, it will easily cause greater harm to the environment.
[0005] In summary, the production of CO 2 High-performance

Method used

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  • Nitrogen-doped porous carbon material and preparation method and application thereof
  • Nitrogen-doped porous carbon material and preparation method and application thereof
  • Nitrogen-doped porous carbon material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 5g of dipotassium ethylenediaminetetraacetic acid and put it in a nickel crucible, place it in a high temperature quartz tube furnace under N 2 Under the protection of air flow (20mL / min), the temperature was raised to 750°C at a rate of 3°C / min, maintained for 1 hour, and then cooled naturally. After pyrolysis, a black composite carbon material was obtained, and then an excess of 5% HCl (v / v) was added solution, immerse the composite carbon material, stir for 1 h, then wash until neutral, and vacuum dry at 80° C. for 12 h to obtain a nitrogen-doped porous carbon material.

[0027] Applying porous carbon materials to CO 2 The method of adsorption is:

[0028] After soaking and cleaning the porous carbon material obtained in (1) with a mixture of distilled water and absolute ethanol (prepared at a volume ratio of 1:1), put it in a blast drying oven at 100°C for 10 hours, and then put it in a vacuum drying oven Dry for 2h. After cooling, weigh a certain mass and ...

Embodiment 2

[0031] Weigh 5g of ethylenediaminetetraacetic acid tripotassium salt into a nickel crucible, place it in a high-temperature quartz tube furnace under the protection of Ar flow (60mL / min), raise the temperature to 650°C at a heating rate of 5°C / min, and maintain it for 3h After natural cooling, a black composite carbon material is obtained after pyrolysis, and then an excess of 10% HNO is added 3 (v / v) solution, immerse the composite carbon material, stir for 0.5 h, then wash, and vacuum dry at 60° C. for 24 h to obtain a nitrogen-doped porous carbon adsorption material.

[0032] Using this material to adsorb CO 2 , the results showed that the adsorption capacity of the material was 5.38mmol / g (273K).

Embodiment 3

[0034] Weigh 5g of ethylenediaminetetraacetic acid disodium salt and put it in a nickel crucible, place it in a high temperature quartz tube furnace under N 2 Under the protection of air flow (100mL / min), the temperature was raised to 900°C at a heating rate of 8°C / min, maintained for 0.5h and then cooled naturally. After pyrolysis, a black composite carbon material was obtained, and then an excess of 3% HNO was added 3 (v / v) solution, immerse the composite carbon material, stir for 2 hours, then wash until neutral, and dry in vacuum at 110° C. for 6 hours to obtain a nitrogen-doped porous carbon adsorption material.

[0035] Using this material to adsorb CO 2 , the results showed that the adsorption capacity of the material was 5.06mmol / g (273K).

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Abstract

The invention provides a nitrogen-doped porous carbon material and a preparation method and application thereof. The preparation method includes steps: weighing ethylene diamine tetraacetic acid metal salt, putting in a nickel crucible, placing in a high-temperature quartz tubular furnace, performing high-temperature pyrolysis under inert gas protection to obtain a black composite carbon material, immersing the composite carbon material in an acid solution, stirring, washing to neutral, and performing vacuum drying to obtain the nitrogen-doped porous carbon material. The nitrogen-doped porous carbon material prepared according to the method has excellent CO2 adsorption performance and stability and has a potential to serve as a commercial adsorbent.

Description

technical field [0001] The invention belongs to the field of porous carbon material preparation, and in particular relates to a nitrogen-doped porous carbon material and its preparation method and application. Background technique [0002] Human overdependence on fossil fuels leads to CO 2 The massive emissions of greenhouse gases, which are the mainstay, have caused a series of environmental and ecological problems such as global warming, rising sea levels, melting glaciers, and rising snow lines, which have begun to affect the fields of agriculture, energy, and politics in human society. Therefore, the development of efficient, feasible and low-cost CO 2 Capture materials and techniques are of great significance. [0003] Currently, CO 2 The separation and capture methods mainly include solvent absorption method, membrane separation method, low temperature separation method and adsorption method. Among these methods, the adsorption method is the material with the most ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/504B01J20/02B01J20/20B01J20/28054Y02C20/40
Inventor 何劲松戴江栋谢阿田田苏君常忠帅闫永胜
Owner JIANGSU UNIV
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