CN109908864A - A kind of preparation method of N doping porous carbon group carbonic anhydride adsorption agent - Google Patents
A kind of preparation method of N doping porous carbon group carbonic anhydride adsorption agent Download PDFInfo
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- CN109908864A CN109908864A CN201910218614.XA CN201910218614A CN109908864A CN 109908864 A CN109908864 A CN 109908864A CN 201910218614 A CN201910218614 A CN 201910218614A CN 109908864 A CN109908864 A CN 109908864A
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- carbonic anhydride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
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Abstract
The invention discloses a kind of N doping porous carbon group carbonic anhydride adsorption agents and preparation method thereof.The preparation method, comprising the following steps: (1) by amino acid and pore creating material investment reaction pot, be uniformly mixed；(2) mixture is placed in high temperature furnace and is heated, nitrogen-doped carbon group carbonic anhydride adsorption agent is made in product washing and drying after cooling.The present invention is simultaneously carbon source and nitrogen source with amino acid, and using potassium hydroxide or sodium hydroxide as pore creating material, preparation method is simple, raw material is cheap and easy to get, N doping porous carbon group carbonic anhydride adsorption agent yield obtained is high, large specific surface area, and absorption property is strong.
Description
Technical field
The present invention relates to inorganic nano material synthesis technical field more particularly to a kind of N doping porous carbon base carbon dioxides
Adsorbent and preparation method thereof.
Background technique
Caused by global warming is the GHG carbon dioxide that mankind's activity generates.Dioxy after current commercialized burning
Change carbon capture and mainly use amine compound, but because of the physicochemical characteristic of itself, there are the solvent loss of equipment burn into, high toxicity,
The problems such as high energy consumption.Carbon-based carbon dioxide absorber is since its is cheap, good chemical stability and thermal stability, extensively
Cause the concern of scientist.
Wherein the carbon material of nitrating has better absorption property than common carbon material, because nitrogen groups and carbon dioxide exist
Stronger active force.But existing nitrating porous carbon group carbonic anhydride adsorption agent synthesis process is cumbersome, improper industrialized production.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of preparation method of N doping porous carbon group carbonic anhydride adsorption agent,
Preparation method is simple, raw material is cheap and easy to get for this, N doping porous carbon group carbonic anhydride adsorption agent yield obtained is high.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of preparation method of N doping porous carbon group carbonic anhydride adsorption agent, comprising the following steps:
(1) amino acid and pore creating material are uniformly mixed；
(2) said mixture is placed in high temperature furnace and is heated, N doping porous carbon group carbonic anhydride adsorption agent is made.
Preferably, in step (1) mixture, the mass ratio 1:0.1-100 of amino acid and pore creating material.
It is further preferred that in step (1) mixture, the mass ratio 1:1-50 of amino acid and pore creating material.
Most preferably, in step (1) mixture, the mass ratio 1:3 of amino acid and pore creating material.
Preferably, detailed process in step (2) are as follows: the mixture is placed in high temperature furnace and is heated, work atmosphere in furnace
Comprising hydrogen, nitrogen and argon gas, it is forced into 1~5 atmospheric pressure, is heated to 300~1500 DEG C of 1~72h of reaction, N doping is made
Porous carbon group carbonic anhydride adsorption agent.
Another aspect of the present invention provides a kind of N doping porous carbon group carbonic anhydride adsorption agent prepared using the above method,
Possess higher specific surface area and carbon dioxide adsorption.
Beneficial effects of the present invention: a kind of preparation method of N doping porous carbon group carbonic anhydride adsorption agent, including it is following
Step: (1) amino acid and pore creating material are uniformly mixed；(2) said mixture is placed in high temperature furnace and is heated, amino acid is in 100-
Thermal polymerization can occur when 250 degrees Celsius, with the further raising of temperature, amino acid polymer can gradually be carbonized, wherein
The nitrogen-containing group of itself can adulterate in situ, and porous N doping porous carbon base carbon dioxide absorption is formed under the action of pore creating material
Agent, preparation method is simple, raw material is cheap and easy to get, N doping porous carbon group carbonic anhydride adsorption agent yield obtained is high.
Detailed description of the invention
Fig. 1 is 1 N doping porous carbon adsorbent transmission electron microscope picture of embodiment；
Fig. 2 is the nitrogen Adsorption and desorption isotherms and graph of pore diameter distribution of the porous carbon-based adsorbent of 1 N doping of embodiment；
Fig. 3 is the carbon dioxide Adsorption and desorption isotherms of the porous carbon-based adsorbent of 1 N doping of embodiment.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.
Embodiment 1: the porous carbon-based adsorbent preparation method of the N doping of the present embodiment, comprising the following steps:
1 kilogram of glycine and 2 kilograms of potassium hydroxide are uniformly mixed by mechanical stirring；
The mixture is placed in high temperature furnace under nitrogen working environment, 700 DEG C of reaction 2h are heated to, it is more that N doping is made
Hole carbon-based adsorbent.
The porous carbon-based adsorbent specific surface area of N doping is 2989m in the present embodiment2/ g, in 25 DEG C and an atmospheric pressure
Under, carbon dioxide adsorption 2.73mmol/g.
Embodiment 2: the porous carbon-based adsorbent preparation method of the N doping of the present embodiment, comprising the following steps:
1 kilogram of proline and 1 kilogram of sodium hydroxide are uniformly mixed by mechanical stirring；
The mixture is placed in high temperature furnace under nitrogen working environment, 650 DEG C of reaction 6h are heated to, it is more that N doping is made
Hole carbon-based adsorbent.
The porous carbon-based adsorbent specific surface area of N doping is 2785m in the present embodiment2/ g, in 25 DEG C and an atmospheric pressure
Under, carbon dioxide adsorption 2.66mmol/g.
For the present invention using amino acid as carbon source and nitrogen source, alkaline matter is pore creating material, under the high temperature conditions, is first polymerize, then take off
Water is carbonized into the porous carbon-based adsorbent of porous N doping, and preparation method is simple, raw material is cheap and easy to get, N doping obtained is more
Hole carbon-based adsorbent yield is high.
It should be noted that and understand, in the spirit and scope for not departing from appended claims the claimed invention
In the case where, various modifications and improvements can be made to the present invention of foregoing detailed description.It is therefore desirable to the technical solution of protection
Range do not limited by given any specific exemplary teachings.
The Applicant declares that the present invention is explained by the above embodiments detailed process equipment and process flow of the invention,
But the present invention is not limited to the above detailed process equipment and process flow, that is, it is above-mentioned detailed not mean that the present invention must rely on
Process equipment and process flow could be implemented.It should be clear to those skilled in the art, any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within of the invention
Within protection scope and the open scope.
Claims (7)
1. a kind of preparation method of N doping porous carbon group carbonic anhydride adsorption agent, which comprises the following steps:
(1) it by amino acid and pore creating material investment reaction pot, is uniformly mixed；
(2) mixture is placed in high temperature furnace and is heated, the porous carbon-based dioxy of N doping is made in product washing and drying after cooling
Change carbon adsorbent.
2. preparation method according to claim 1, which is characterized in that in step (1) described mixed liquor amino acid include and
It is not limited to glycine, alanine, valine, leucine, isoleucine, phenylalanine, proline, tryptophan, serine, junket ammonia
Acid, cysteine, methionine, asparagine, glutamine, threonine, aspartic acid, glutamic acid, lysine, arginine and group
Propylhomoserin；
Pore creating material is alkaline matter, includes and is not limited to potassium hydroxide, sodium hydroxide, sodium carbonate and potassium carbonate；
The mass ratio 1:0.1-100 of amino acid and pore creating material.
3. preparation method according to claim 1, which is characterized in that step (1) hybrid mode is mixed for mechanical stirring
Conjunction and chemical mixing；
Chemical mixing refers to material is completely dissolved in certain solvent after, stir evenly, then remove solvent by the processes such as being evaporated,
The method for finally obtaining uniform mixed material.
4. preparation method according to claim 1, which is characterized in that step (2) high temperature furnace includes intermittent high temperature
Furnace and continuous high-temperature furnace；
Intermittent high temperature furnace includes and is not limited to Muffle furnace and tube furnace；
Continuous high-temperature furnace includes and is not limited to continuous production type high temperature graphitization furnace.
5. preparation method according to claim 1, which is characterized in that detailed process in step (2) are as follows: by the mixture
It is placed in high temperature furnace and heats, work atmosphere includes hydrogen, nitrogen and argon gas in furnace, is forced into 1~5 atmospheric pressure, is heated to 300
N doping porous carbon group carbonic anhydride adsorption agent is made in~1500 DEG C of 1~72h of reaction.
6. a kind of N doping porous carbon group carbonic anhydride adsorption agent prepared using claim 1 the method.
7. N doping porous carbon group carbonic anhydride adsorption agent according to claim 6, it is characterised in that its microscopic feature are as follows:
Higher specific surface area and carbon dioxide adsorption.
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Cited By (5)
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| CN110327905A (en) * | 2019-08-07 | 2019-10-15 | 中国石油化工股份有限公司 | A kind of nitrogenous porous carbon nano-composite material preparation method of polyaniline carbon nanotube base |
| CN110404573A (en) * | 2019-06-28 | 2019-11-05 | 中国科学技术大学 | A kind of preparation method and application of extra small palladium-base alloy material |
| CN111634908A (en) * | 2020-04-22 | 2020-09-08 | 山东大学 | Method for preparing porous carbon by nitrogen and oxygen co-doping porous carbon and L-lysine and application |
| CN113083231A (en) * | 2021-04-12 | 2021-07-09 | 贵州大学 | Preparation method and application of porous carbon adsorbent for deeply removing hydrogen sulfide |
| CN113707459A (en) * | 2021-08-02 | 2021-11-26 | 中北大学 | Preparation method and application of nitrogen-sulfur co-doped three-dimensional porous carbon material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110404573A (en) * | 2019-06-28 | 2019-11-05 | 中国科学技术大学 | A kind of preparation method and application of extra small palladium-base alloy material |
| CN110327905A (en) * | 2019-08-07 | 2019-10-15 | 中国石油化工股份有限公司 | A kind of nitrogenous porous carbon nano-composite material preparation method of polyaniline carbon nanotube base |
| CN111634908A (en) * | 2020-04-22 | 2020-09-08 | 山东大学 | Method for preparing porous carbon by nitrogen and oxygen co-doping porous carbon and L-lysine and application |
| CN111634908B (en) * | 2020-04-22 | 2022-03-01 | 山东大学 | Method for preparing porous carbon by nitrogen and oxygen co-doping porous carbon and L-lysine and application |
| CN113083231A (en) * | 2021-04-12 | 2021-07-09 | 贵州大学 | Preparation method and application of porous carbon adsorbent for deeply removing hydrogen sulfide |
| CN113707459A (en) * | 2021-08-02 | 2021-11-26 | 中北大学 | Preparation method and application of nitrogen-sulfur co-doped three-dimensional porous carbon material |
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