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Preparation of nitrogen doping carbon nanometer fiber adsorption material for carbon dioxide adsorption separation

A technology of carbon nanofibers and adsorption materials, applied in fiber treatment, separation methods, separation of dispersed particles, etc., can solve the problems of poor adsorption selectivity of carbon nanofibers, and meet the needs of carbon dioxide capture, good adsorption capacity, and operability strong effect

Inactive Publication Date: 2017-02-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of nitrogen-doped carbon nanofiber adsorption material for carbon dioxide adsorption and separation, so as to solve the problem of poor carbon nanofiber adsorption selectivity

Method used

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  • Preparation of nitrogen doping carbon nanometer fiber adsorption material for carbon dioxide adsorption separation
  • Preparation of nitrogen doping carbon nanometer fiber adsorption material for carbon dioxide adsorption separation

Examples

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Effect test

Embodiment 1

[0024] A preparation method of nitrogen-doped carbon nanofiber adsorption material for carbon dioxide adsorption and separation, the specific steps are:

[0025] (1) At room temperature of 25°C, first add 0.05g of pyrrole to 9.45g of N,N-dimethylformamide and stir for 1 hour to obtain a solution, then add 0.5g of polyacrylonitrile to the above solution and stir until completely dissolved, Obtain electrospinning raw material, wherein, the mass fraction of polyacrylonitrile is 5.5%, the mass fraction of pyrrole is 0.5%;

[0026] (2) Add the obtained electrospinning raw material into the electrospinning device, and carry out electrospinning under the condition that the static voltage is 10kV, the flow rate of the syringe pump is 0.3mL / h, and the distance between the spinneret and the receiving screen is 6cm, and the obtained Nitrogen-containing hybrid nanofibrous materials;

[0027] (3) Carbonize the nitrogen-containing hybrid nanofibrous material. The specific steps are: first ...

Embodiment 2

[0030] A preparation method of nitrogen-doped carbon nanofiber adsorption material for carbon dioxide adsorption and separation, the specific steps are:

[0031] (1) At room temperature 25°C, first add 0.05g of pyrrole to 9.25g of N,N-dimethylformamide and stir for 1h to obtain a solution, then add 0.7g of polyimide to the above solution and stir until completely dissolved , obtain electrospinning raw material, wherein, the mass fraction of polyimide is 7.5%, the mass fraction of pyrrole is 0.5%;

[0032] (2) Add the obtained electrospinning raw material into the electrospinning device, and carry out electrospinning under the condition that the static voltage is 15kV, the flow rate of the syringe pump is 0.5mL / h, and the distance between the spinneret and the receiving screen is 10cm, and the obtained Nitrogen-containing hybrid nanofibrous materials;

[0033](3) Carbonize the nitrogen-containing hybrid nanofiber material. The specific steps are: firstly heat up to 180°C under...

Embodiment 3

[0036] A preparation method of nitrogen-doped carbon nanofiber adsorption material for carbon dioxide adsorption and separation, the specific steps are:

[0037] (1) At room temperature of 25°C, first add 0.1g of urea-formaldehyde resin to 8.9g of ethanol and stir for 2 hours to obtain a solution, then add 1g of polyvinyl butyral to the above solution and stir until completely dissolved to obtain the electrospinning raw material , wherein, the mass fraction of polyvinyl butyral is 11%, and the mass fraction of urea-formaldehyde resin is 1%;

[0038] (2) Add the obtained electrospinning raw material into the electrospinning device, and carry out electrospinning under the condition that the static voltage is 20kV, the flow rate of the syringe pump is 1mL / h, and the distance between the spinneret and the receiving screen is 15cm, and the obtained Nitrogen hybrid nanofibrous materials;

[0039] (3) Carbonize the nitrogen-containing hybrid nanofiber material. The specific steps ar...

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Abstract

The invention provides a preparation method of a nitrogen doping carbon nanometer fiber adsorption material for carbon dioxide adsorption separation. The method is characterized by comprising the following steps of 1, at room temperature, firstly adding nitrogen-containing compounds into a solvent to be stirred for 1 to 5h to obtain a solution or dispersion solution; then, adding precursor polymers of the carbon nanometer fiber into the solution or the dispersion solution; performing stirring until the complete dissolution to obtain electric spinning raw materials; 2, performing electrostatic spinning on the electric spinning raw materials obtained in the first step, and obtaining nitrogen-containing hybridization nanometer fiber materials; 3, performing carbonization treatment; 4, performing activation treatment to obtain the nitrogen doping carbon nanometer fiber adsorption material for carbon dioxide adsorption separation. The carbon nanometer fiber adsorption material obtained by the method provided by the invention has the advantages of good adsorption volume, high selectivity and circulation stability; the prepared nanometer fiber has good softness and mechanical intensity; the operability is high; the carbon dioxide capture requirements in different discharging places can be met.

Description

technical field [0001] The invention relates to a preparation method of a nitrogen-doped carbon nanofiber adsorption material for carbon dioxide adsorption and separation, and belongs to the technical field of carbon dioxide adsorption and separation. Background technique [0002] Carbon dioxide is one of the greenhouse gases that cause global warming. Excessive emissions will lead to a series of environmental and ecological problems. Therefore, capturing and storing carbon dioxide is of great significance. Adsorption has attracted extensive attention due to its advantages of large adsorption capacity, high selectivity, low energy consumption, and easy separation, and has become one of the research hotspots in the field of carbon dioxide capture and storage. Porous activated carbon material has the advantages of high specific surface area, rich pore structure, stable chemical and thermodynamic properties, etc., and is a commonly used solid adsorbent for carbon dioxide adsorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02D01D5/00
CPCB01D53/02B01D2257/504B01J20/20B01J20/28023D01D5/003Y02P70/62Y02C20/40
Inventor 王先锋张宇菲丁彬俞建勇
Owner DONGHUA UNIV
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