CN106925237A - A kind of porous nano-fibre material for carbon dioxide adsorption and preparation method thereof - Google Patents
A kind of porous nano-fibre material for carbon dioxide adsorption and preparation method thereof Download PDFInfo
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Abstract
The invention provides a kind of porous nano-fibre material for carbon dioxide adsorption and preparation method thereof.The described porous nano-fibre material for carbon dioxide adsorption, it is characterized in that, including porous nano-fibre, described porous nano-fibre carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains the porous nano-fibre material for carbon dioxide adsorption.Obtained porous nano-fibre material of the invention has carbon dioxide adsorption ability and adsorption desorption cyclical stability and anti-grinded hardness index higher, has huge application potential in carbon trapping field.
Description
Technical field
The present invention relates to a kind of porous nano-fibre material for carbon dioxide adsorption and preparation method thereof, belong to dioxy
Change carbon adsorption technical field.
Background technology
In recent years, global warming is one of great environmental problem of facing mankind, is also the sternness of 21 century facing mankind
One of challenge.CO2 emissions in arch-criminal's greenhouse gases of global warming are especially pronounced, are to cause greenhouse effects
Main gas.Therefore, the trapping of carbon dioxide, using with to seal up for safekeeping be considered as the key that solves the problems, such as carbon dioxide discharge-reduction
Behave is simultaneously increasingly becoming the study hotspot of scientific circles.Wherein, adsorbing separation trapping technique has that efficiency high, energy consumption be low, adsorption desorption
The advantages of stable circulation, it has also become one of most potential collecting carbonic anhydride technology.
Exploitation novel absorption material is the key of carbon trapping technique.At present, the sorbing material of numerous studies mainly has：Utilize
The zeolite molecular sieve of chemisorbed, the porous carbon materials based on physical absorption and the metal with superhigh specific surface area have machine frame
The materials such as frame.Though with certain carbon dioxide adsorption performance, it exists above-mentioned porous material in granular form, in fire coal
When being used under the specific environment of power plant flue gas, there is easy efflorescence, adsorbance and adsorption desorption cycle performance reduces and makes rapidly
The defect for separating and recovering is difficult to after, its operability and practical application performance is limited.Porous nano-fibre material is connected with it
Continuous property is good, pore passage structure is abundant and with structural advantages such as certain specific surface areas, can effectively overcome granular materials because of its structure
The applied defect that discontinuity and easy efflorescence are brought, huge application potential is shown in carbon dioxide adsorption field.
The content of the invention
It is an object of the invention to provide a kind of porous nano-fibre material for carbon dioxide adsorption and preparation method thereof,
To solve above-mentioned granular porous material, the easy efflorescence of generally existing, adsorbance and adsorption desorption cycle performance are rapid in use
The problem of reduction.
In order to achieve the above object, the invention provides following technical scheme：
A kind of porous nano-fibre material for carbon dioxide adsorption, it is characterised in that including porous nano-fibre, institute
The porous nano-fibre stated carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains being inhaled for carbon dioxide
Attached porous nano-fibre material.
Present invention also offers the preparation method of the above-mentioned porous nano-fibre material for carbon dioxide adsorption, it is special
Levy and be, including：
Step 1：Make porous nano-fibre；
Step 2：It is 60~78% absolute ethyl alcohols, 20~30% deionized waters and 2~20% hydrogen to prepare containing mass fraction
The mixed solution of sodium oxide molybdena, porous nano-fibre is immersed in above-mentioned mixed solution, the heating in water bath for reaction 5 at 70~100 DEG C
~15min, is washed with deionized into after reacted fiber is soaked into 2~10min in 0.05~0.15mol/L hydrochloric acid
Property, dried at 50~70 DEG C, obtain hydrolyzing porous nano-fibre；
Step 3：Will hydrolysis porous nano-fibre to be placed in mass fraction be 5~50% containing amino-compound or polymer
In the aqueous solution, taken out after 3~6h of hydro-thermal reaction under the conditions of 80~100 DEG C, be washed with deionized to neutrality, at 50~70 DEG C
Drying, is obtained the porous nano-fibre material for carbon dioxide adsorption.
Preferably, the aperture of described porous nano-fibre is 5~50nm, and porosity is 80~95%.
Preferably, the preparation method of described porous nano-fibre includes：
The first step：At room temperature, it is in stirred tank that at least one water-soluble polymer and at least one of spinning is non-
Water-soluble polymer stirring and dissolving obtains the electrospinning raw material that mass fraction is 8~40%, the electrospinning raw material that will be obtained in solvent
Being added in electrostatic spinning apparatus carries out electrostatic spinning, obtains composite nano fiber mould material；
Second step：The composite nano fiber mould material that the first step is obtained is placed in hydrothermal reaction kettle, adds deionization
Water, 6~12h of hydro-thermal reaction at 80~120 DEG C, to remove contained water-soluble polymeric in composite nano fiber mould material
Thing, dries at 50~70 DEG C, obtains porous nano-fibre.
Preferably, the mixing speed in the first step is 100~2500r/min, and mixing time is 8~24h.
Preferably, the electrospinning conditions in the first step are：Electrostatic pressure is 15~40kV, and injection flow rate pump is 0.5
~4mL/h, spinning head is 8~30cm away from receiving screen distance.
Preferably, described water-soluble polymer is polyvinylpyrrolidone, polyvinyl alcohol, PEO, polypropylene
Acid, polyethyleneimine, polyacrylamide, polyethylene glycol, PLA, polycaprolactone, polyglycolic acid, polyhydroxyalkanoatefrom,
Poly butylene succinate, polyacrylic acid resin, carboxymethylcellulose calcium, methylcellulose, ethyl cellulose, hydroxy ethyl fiber
One or more mixture in element, HPMA, poly-quaternary ammonium salt, polyaminoacid.
Preferably, described non-soluble polymer is polyacrylonitrile, polystyrene, polyvinyl chloride, polyvinyl alcohol contracting fourth
It is aldehyde, polypyrrole, makrolon, polyethylene terephthalate, polyether-ether-ketone, polymethyl methacrylate, polyimides, poly-
One or more mixture in vinylidene fluoride.
Preferably, described solvent be DMF, DMA, ethanol, dimethyl sulfoxide (DMSO),
Acetone, hexafluoroisopropanol, dichloromethane, chloroform, tetrahydrofuran, formic acid, acetic acid, ether, carbon tetrachloride, 1,2- dichloroethanes,
Trichloroethanes, 1,1,2- trichloro ethylene, 1,2- dimethoxy-ethanes, 1,2,3,4-tetrahydro-naphthalene, sulfolane, pyrimidine, formamide,
N-hexane, chlorobenzene, dioxane, acetonitrile, ethylene glycol, toluene, hexahydrotoluene, 1,2-dichloroethene, diformazan
Benzene, hexamethylene, 1-METHYLPYRROLIDONE, pentane, methyl phenyl ethers anisole, butyl acetate, three fourth MEEs, isopropyl acetate, methyl four
One or more mixture in hydrogen furans, petroleum ether, trichloroacetic acid, trifluoroacetic acid and pyridine.
Preferably, described is diethanol amine, diethylenetriamine, triethylene tetramine, four containing amino-compound or polymer
The amine of ethene five, monoamine base silane, diamino silanes, triamido silane, melamine, urea, polyethyleneimine and polyacrylamide
One or more mixture in amine.
Compared with prior art, advantages of the present invention is as follows：
1st, the present invention is obtained and can be used for the flexibility of carbon dioxide adsorption by combining electrostatic spinning and graft modification technology
Porous nano-fibre material.Electrospun nano-fibers material has the advantages that specific surface area is big, porosity is high, continuity is good and assigns
Give sorbing material adsorbance higher and preferable stability.Therefore, porous nano-fibre material is so that its continuity is good, hole
The structural advantages such as road structure-rich, can effectively overcome granular materials to lack because of the application that its structure discontinuity and easy efflorescence are brought
Fall into, while it also avoid because device is blocked and secondary pollution caused by material in use efflorescence.
2nd, fibrous material of the invention has the circulation of preferable adsorption desorption steady source of the gas high flow rate, impact be big, under shock conditions
It is qualitative.Porous nano-fibre sorbing material of the invention has huge application potential and dynamogenetic value in carbon trapping field.
3rd, the obtained porous nano-fibre material of the present invention has carbon dioxide adsorption ability and anti-grinded hardness index higher,
There is huge application potential in carbon trapping field.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Spinning polymer in embodiment 1~6 is from polyacrylonitrile (weight average molecular weight is 9~15W), polyvinyl pyrrole
Alkanone (weight average molecular weight is 5.8~130W), polystyrene (weight average molecular weight is 5~20W), polyvinyl alcohol (weight average molecular weight
Be 9~12W), polyvinyl butyral resin (weight average molecular weight be 9~12W), polyacrylic acid (weight average molecular weight is 0.3~0.5W),
Polyacrylamide (weight average molecular weight is 200~1000W), PLA (weight average molecular weight is 3.8~5.4W)；Solvent selects N, N-
Dimethylformamide, DMA and dimethyl sulfoxide (DMSO), by Shanghai, crystalline substance pure reagent Co., Ltd produces；Polyethylene
The weight average molecular weight of imines is 600~1800, purchased from Aladdin；High voltage power supply is from the production of Tianjin Dong Wen high voltage power supplies factory
DW-P303-1ACD8 types.
Embodiment 1
A kind of porous nano-fibre material for carbon dioxide adsorption, including porous nano-fibre, it is described porous to receive
Rice fiber carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains being received for the porous of carbon dioxide adsorption
Rice fibrous material.
The preparation method of the described porous nano-fibre material for carbon dioxide adsorption is：
At 25 DEG C of room temperature, 4g polyacrylonitrile and 5g polyvinylpyrrolidones are stirred molten with 500r/min in stirred tank
Solution stirs 12h in 41gN, dinethylformamide, obtain electrospinning raw material that mass fraction is 18% (8% polyacrylonitrile/
10% polyvinylpyrrolidone), the electrospinning raw material that will be obtained is added in electrostatic spinning apparatus, is 20kV, injection in electrostatic pressure
Flow rate pump 1mL/h, spinning head carries out electrostatic spinning away from receiving screen under conditions of 20cm, obtains polyacrylonitrile/polyethylene pyrrole
Pyrrolidone nano-fiber template material.
Polyacrylonitrile/polyvinylpyrrolidonenanometer nanometer fiber mould material is placed in hydrothermal reaction kettle, addition is gone in right amount
Ionized water, the hydro-thermal reaction 8h at 100 DEG C, to remove institute in polyacrylonitrile/polyvinylpyrrolidonenanometer nanometer fiber mould material
The polyvinylpyrrolidone for containing, gained fiber is dried at 70 DEG C, obtains porous polypropylene nitrile nanofibre, and aperture is 15 DEG C
45nm, porosity is 91%.
Prepare containing the mixed solution that mass fraction is 70% absolute ethyl alcohol, 20% deionized water and 10% NaOH,
Porous polypropylene nitrile nanofibre is immersed in above-mentioned mixed solution, the heating water bath 8min at 80 DEG C, by reacted fiber
It is washed with deionized to neutrality after soaking 8min in 0.12mol/L hydrochloric acid, is dried at 70 DEG C, obtains hydrolyzing porous polypropylene
Nitrile nanofibre.
Hydrolysis porous polypropylene nitrile nanofibre is placed in the aq. polyethyleneimine that mass fraction is 20%, 90
Fiber is taken out after hydro-thermal reaction 4h under the conditions of DEG C, is washed with deionized to neutrality, dried at 70 DEG C, so as to be obtained for dioxy
Change the porous nano-fibre material of carbon adsorption.
Embodiment 2
A kind of porous nano-fibre material for carbon dioxide adsorption, including porous nano-fibre, it is described porous to receive
Rice fiber carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains being received for the porous of carbon dioxide adsorption
Rice fibrous material.
The preparation method of the described porous nano-fibre material for carbon dioxide adsorption is：
At 25 DEG C of room temperature, 4g polyacrylonitrile and 7g polyvinylpyrrolidones are stirred molten with 800r/min in stirred tank
Solution stirs 18h in 39gN, dinethylformamide, obtain electrospinning raw material that mass fraction is 22% (8% polyacrylonitrile/
14% polyvinylpyrrolidone), the electrospinning raw material that will be obtained is added in electrostatic spinning apparatus, is 25kV, injection in electrostatic pressure
Flow rate pump 1.5mL/h, spinning head carries out electrostatic spinning away from receiving screen under conditions of 22cm, obtains polyacrylonitrile/polyethylene
Pyrrolidones nano-fiber template material.
Polyacrylonitrile/polyvinylpyrrolidonenanometer nanometer fiber mould material is placed in hydrothermal reaction kettle, addition is gone in right amount
Ionized water, the hydro-thermal reaction 9h at 100 DEG C, to remove institute in polyacrylonitrile/polyvinylpyrrolidonenanometer nanometer fiber mould material
The polyvinylpyrrolidone for containing, gained fiber is dried at 70 DEG C, obtains porous polypropylene nitrile nanofibre, and aperture is 26~
48nm, porosity is 93%.
Prepare containing the mixed solution that mass fraction is 66% absolute ethyl alcohol, 20% deionized water and 14% NaOH,
Porous polypropylene nitrile nanofibre is immersed in above-mentioned mixed solution, the heating water bath 6min at 75 DEG C, by reacted fiber
It is washed with deionized to neutrality after soaking 10min in 0.15mol/L hydrochloric acid, is dried at 70 DEG C, obtains hydrolysis porous poly- third
Alkene nitrile nanofibre.
Hydrolysis porous polypropylene nitrile nanofibre is placed in the aq. polyethyleneimine that mass fraction is 30%, 95
Fiber is taken out after hydro-thermal reaction 5h under the conditions of DEG C, is washed with deionized to neutrality, dried at 70 DEG C, so as to be obtained for dioxy
Change the porous nano-fibre material of carbon adsorption.
Embodiment 3
A kind of porous nano-fibre material for carbon dioxide adsorption, including porous nano-fibre, it is described porous to receive
Rice fiber carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains being received for the porous of carbon dioxide adsorption
Rice fibrous material.
The preparation method of the described porous nano-fibre material for carbon dioxide adsorption is：
At 25 DEG C of room temperature, in stirred tank by 5g polystyrene and 10g polyvinyl alcohol with 1000r/min stirring and dissolvings in
In 35g DMAs, 20h is stirred, obtain electrospinning raw material (10% polystyrene/20% that mass fraction is 30%
Polyvinyl alcohol), the electrospinning raw material that will be obtained is added in electrostatic spinning apparatus, is 30kV in electrostatic pressure, injects flow rate pump
1.8mL/h, spinning head carries out electrostatic spinning away from receiving screen under conditions of 25cm, obtains polystyrene/polyvinyl alcohol nano
Fibrous template material.
Polystyrene/polyvinyl alcohol nano mould material is placed in hydrothermal reaction kettle, appropriate amount of deionized water is added,
The hydro-thermal reaction 10h at 120 DEG C, to remove contained polyvinyl alcohol in polystyrene/polyvinyl alcohol nano mould material,
Gained fiber is dried at 70 DEG C, expanded polystyrene nanofiber is obtained, aperture is 15~43nm, and porosity is 90%.
Prepare containing the mixed solution that mass fraction is 65% absolute ethyl alcohol, 30% deionized water and 5% NaOH, will
Expanded polystyrene nanofiber is immersed in above-mentioned mixed solution, and the heating water bath 5min at 85 DEG C exists reacted fiber
It is washed with deionized to neutrality after soaking 5min in 0.1mol/L hydrochloric acid, is put into convection oven and is dried at 70 DEG C, obtains water
Solution expanded polystyrene nanofiber.
Hydrolysis expanded polystyrene nanofiber is placed in the melamine aqueous solution that mass fraction is 40%, 100
Fiber is taken out after hydro-thermal reaction 3h under the conditions of DEG C, is washed with deionized to neutrality, dried at 70 DEG C, so as to be obtained for two
Aoxidize the porous nano-fibre material of carbon adsorption.
Embodiment 4
A kind of porous nano-fibre material for carbon dioxide adsorption, including porous nano-fibre, it is described porous to receive
Rice fiber carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains being received for the porous of carbon dioxide adsorption
Rice fibrous material.
The preparation method of the described porous nano-fibre material for carbon dioxide adsorption is：
At 25 DEG C of room temperature, 5g polyvinyl butyral resins and 13g polyacrylic acid are stirred with 900r/min in stirred tank
It is dissolved in 32g DMAs, stirs 24h, obtains electrospinning raw material (10% polyethylene that mass fraction is 36%
Butyral/26% polyacrylic acid), the electrospinning raw material that will be obtained is added in electrostatic spinning apparatus, is 25kV, note in electrostatic pressure
Penetrate flow rate pump 2mL/h, spinning head carries out electrostatic spinning away from receiving screen under conditions of 23cm, obtain polyvinyl butyral resin/
Polyacrylic acid nano fibrous template material.
Polyvinyl butyral resin/polyacrylic acid nano fibrous template material is placed in hydrothermal reaction kettle, addition is gone in right amount
Ionized water, the hydro-thermal reaction 9h at 100 DEG C, to remove institute in polyvinyl butyral resin/polyacrylic acid nano fibrous template material
The polyacrylic acid for containing, gained fiber is dried at 65 DEG C, obtains porous polyethylene butyral nanofiber, and aperture is 10~
38nm, porosity is 89%.
Prepare containing the mixed solution that mass fraction is 68% absolute ethyl alcohol, 24% deionized water and 8% NaOH, will
Porous polyethylene butyral nanofiber is immersed in above-mentioned mixed solution, and the heating water bath 5min at 75 DEG C will be reacted
Fiber is washed with deionized to neutrality after soaking 4min in 0.1mol/L hydrochloric acid, is dried at 65 DEG C, obtains hydrolysis porous
Polyvinyl butyral resin nanofiber.
Hydrolysis porous polyethylene butyral nanofiber is placed in the melamine aqueous solution that mass fraction is 20%,
Fiber is taken out after hydro-thermal reaction 4h under the conditions of 95 DEG C, is washed with deionized to neutrality, dried at 65 DEG C, so as to be obtained use
In the porous nano-fibre material of carbon dioxide adsorption.
Embodiment 5
A kind of porous nano-fibre material for carbon dioxide adsorption, including porous nano-fibre, it is described porous to receive
Rice fiber carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains being received for the porous of carbon dioxide adsorption
Rice fibrous material.
The preparation method of the described porous nano-fibre material for carbon dioxide adsorption is：
At 25 DEG C of room temperature, by 4g polystyrene and 5g polyacrylamides with 1500r/min stirring and dissolvings in stirred tank
In 41g dimethyl sulfoxide (DMSO)s, 24h is stirred, obtain electrospinning raw material (8% polystyrene/10% polypropylene that mass fraction is 18%
Acid amides), the electrospinning raw material that will be obtained is added in electrostatic spinning apparatus, is 30kV in electrostatic pressure, injects flow rate pump 2mL/h, spray
Silk head carries out electrostatic spinning away from receiving screen under conditions of 26cm, obtains POLYSTYRENE/POLYACRYLAMIDE nano-fiber template
Material.
POLYSTYRENE/POLYACRYLAMIDE nano-fiber template material is placed in hydrothermal reaction kettle, appropriate deionization is added
Water, the hydro-thermal reaction 8h at 90 DEG C, to remove contained polypropylene in POLYSTYRENE/POLYACRYLAMIDE nano-fiber template material
Acid amides, gained fiber is dried at 60 DEG C, obtains expanded polystyrene nanofiber, and aperture is 20~50nm, and porosity is
95%.
Prepare containing the mixed solution that mass fraction is 70% absolute ethyl alcohol, 26% deionized water and 4% NaOH, will
Expanded polystyrene nanofiber is immersed in above-mentioned mixed solution, and the heating water bath 10min at 80 DEG C exists reacted fiber
It is washed with deionized to neutrality after soaking 8min in 0.05mol/L hydrochloric acid, is dried at 60 DEG C, obtains hydrolyzing porous polyphenyl second
Alkene nanofiber.
Hydrolysis expanded polystyrene nanofiber is placed in the aq. polyethyleneimine that mass fraction is 40%, 90
Fiber is taken out after hydro-thermal reaction 6h under the conditions of DEG C, is washed with deionized to neutrality, dried at 60 DEG C, so as to be obtained for two
Aoxidize the porous nano-fibre material of carbon adsorption.
Embodiment 6
A kind of porous nano-fibre material for carbon dioxide adsorption, including porous nano-fibre, it is described porous to receive
Rice fiber carries out hydro-thermal reaction after hydrolysis with containing amino-compound or polymer, obtains being received for the porous of carbon dioxide adsorption
Rice fibrous material.
The preparation method of the described porous nano-fibre material for carbon dioxide adsorption is：
At 25 DEG C of room temperature, 4g polyvinyl butyral resins and 12g PLAs are stirred molten with 800r/min in stirred tank
Solution stirs 18h in 34g dimethyl sulfoxide (DMSO)s, obtain electrospinning raw material that mass fraction is 32% (8% polyvinyl butyral resin/
24% PLA), the electrospinning raw material that will be obtained is added in electrostatic spinning apparatus, is 25kV in electrostatic pressure, injects flow rate pump
1mL/h, spinning head carries out electrostatic spinning away from receiving screen under conditions of 20cm, obtains polyvinyl butyral resin/PLA and receives
Rice fibrous template material.
Polyvinyl butyral resin/polylactic acid nano fiber mould material is placed in hydrothermal reaction kettle, add it is appropriate go from
Sub- water, the hydro-thermal reaction 7h at 110 DEG C is contained in polyvinyl butyral resin/polylactic acid nano fiber mould material to remove
PLA, gained fiber is dried at 70 DEG C, obtains porous polyethylene butyral nanofiber, and aperture is 10~40nm,
Porosity is 90%.
Prepare containing the mixed solution that mass fraction is 70% absolute ethyl alcohol, 24% deionized water and 6% NaOH, will
Porous polyethylene butyral nanofiber is immersed in above-mentioned mixed solution, and the heating water bath 7min at 85 DEG C will be reacted
Fiber is washed with deionized to neutrality after soaking 4min in 0.08mol/L hydrochloric acid, is dried at 70 DEG C, obtains hydrolysis porous
Polyvinyl butyral resin nanofiber.
Hydrolysis porous polyethylene butyral nanofiber is placed in the melamine aqueous solution that mass fraction is 30%,
Fiber is taken out after hydro-thermal reaction 4h under the conditions of 100 DEG C, is washed with deionized to neutrality, dried at 70 DEG C, so as to be obtained
For the porous nano-fibre material of carbon dioxide adsorption.
Embodiment 7
The porous nano-fibre material with carbon dioxide adsorption performance to above-mentioned preparation is evaluated：
1st, determined respectively prepared by embodiment 1~6 using full-automatic high-pressure volumetric method gas absorption instrument (ASAP2050)
The specific surface area of porous nano-fibre sorbing material, test result see the table below：
2nd, being used for prepared by embodiment 1~6 is determined respectively using synchronous thermogravimetric analyzer (DSC-Q600 TGA/DSC)
CO of the porous nano-fibre material of carbon dioxide adsorption at 35 DEG C2Adsorbance and adsorption desorption cyclical stability.In experiment first
105 DEG C are risen to the heating rate of 20 DEG C/min in a nitrogen atmosphere, 35 DEG C are cooled to 20 DEG C/min after constant temperature 60min,
Absorbing carbon dioxide at 35 DEG C, adsorption time is 60min, then to switch to and carry out carbon dioxide desorption under nitrogen atmosphere, with 20 DEG C/
The heating rate of min rises to 105 DEG C, and 35 DEG C, constant temperature 60min, the adsorption desorption process are cooled to 20 DEG C/min after constant temperature 60min
Circulate 50 times altogether.The absorption amount loss rate (%) that carbon dioxide adsorption (mmol/g) and adsorption desorption are circulated after 50 times see the table below：
Conclusion：As can be seen from the above table, what the method according to embodiment 1~6 was prepared inhales with carbon dioxide
To the adsorbance of carbon dioxide totally better than commercial activated carbon, maximum can reach 3.8mmol/g to the nano-fiber material of attached performance
Adsorbance；After circulating 50 times through adsorption desorption, absorption amount loss rate is no more than 5%.Therefore method system according to embodiments of the present invention
Standby porous nano-fibre material has good carbon dioxide adsorption performance and excellent adsorption desorption cyclical stability.
Claims (10)
1. a kind of porous nano-fibre material for carbon dioxide adsorption, it is characterised in that described including porous nano-fibre
Porous nano-fibre carry out hydro-thermal reaction with containing amino-compound or polymer after hydrolysis, obtain for carbon dioxide adsorption
Porous nano-fibre material.
2. the preparation method of the porous nano-fibre material for carbon dioxide adsorption described in claim 1, it is characterised in that
Including：
Step 1：Make porous nano-fibre；
Step 2：It is 60~78% absolute ethyl alcohols, 20~30% deionized waters and 2~20% hydroxides to prepare containing mass fraction
The mixed solution of sodium, porous nano-fibre is immersed in above-mentioned mixed solution, at 70~100 DEG C heating in water bath for reaction 5~
15min, is washed with deionized into after reacted fiber is soaked into 2~10min in 0.05~0.15mol/L hydrochloric acid
Property, dried at 50~70 DEG C, obtain hydrolyzing porous nano-fibre；
Step 3：By hydrolyze porous nano-fibre be placed in mass fraction be 5~50% it is water-soluble containing amino-compound or polymer
In liquid, taken out after 3~6h of hydro-thermal reaction under the conditions of 80~100 DEG C, be washed with deionized to neutrality, dried at 50~70 DEG C
It is dry, the porous nano-fibre material for carbon dioxide adsorption is obtained.
3. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 2, and its feature exists
In the aperture of described porous nano-fibre is 5~50nm, and porosity is 80~95%.
4. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 2, and its feature exists
In the preparation method of described porous nano-fibre includes：
The first step：At room temperature, by least one water-soluble polymer of spinning and at least one non-aqueous in stirred tank
Property polymer stirring and dissolving in solvent, obtain the electrospinning raw material that mass fraction is 8~40%, the electrospinning raw material that will obtain is added
Electrostatic spinning is carried out in electrostatic spinning apparatus, composite nano fiber mould material is obtained；
Second step：The composite nano fiber mould material that the first step is obtained is placed in hydrothermal reaction kettle, adds appropriate deionization
Water, 6~12h of hydro-thermal reaction at 80~120 DEG C, to remove contained water-soluble polymeric in composite nano fiber mould material
Thing, dries at 50~70 DEG C, obtains porous nano-fibre.
5. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 4, and its feature exists
In the mixing speed in the described first step is 100~2500r/min, and mixing time is 8~24h.
6. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 4, and its feature exists
In the electrospinning conditions in the described first step are：Electrostatic pressure is 15~40kV, and injection flow rate pump is 0.5~4mL/
H, spinning head is 8~30cm away from receiving screen distance.
7. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 4, and its feature exists
In described water-soluble polymer is polyvinylpyrrolidone, polyvinyl alcohol, PEO, polyacrylic acid, polyethyleneimine
Amine, polyacrylamide, polyethylene glycol, PLA, polycaprolactone, polyglycolic acid, polyhydroxyalkanoatefrom, poly-succinic fourth two
Alcohol ester, polyacrylic acid resin, carboxymethylcellulose calcium, methylcellulose, ethyl cellulose, hydroxyethyl cellulose, HPMA,
One or more mixture in poly-quaternary ammonium salt, polyaminoacid.
8. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 4, and its feature exists
In described non-soluble polymer is polyacrylonitrile, polystyrene, polyvinyl chloride, polyvinyl butyral resin, polypyrrole, poly-
In carbonic ester, polyethylene terephthalate, polyether-ether-ketone, polymethyl methacrylate, polyimides, polyvinylidene fluoride
One or more mixture.
9. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 4, and its feature exists
In described solvent is DMF, DMA, ethanol, dimethyl sulfoxide (DMSO), acetone, hexafluoro are different
Propyl alcohol, dichloromethane, chloroform, tetrahydrofuran, formic acid, acetic acid, ether, carbon tetrachloride, 1,2- dichloroethanes, trichloroethanes, 1,
1,2- trichloro ethylene, 1,2- dimethoxy-ethanes, 1,2,3,4-tetrahydro-naphthalene, sulfolane, pyrimidine, formamide, n-hexane, chlorine
Benzene, dioxane, acetonitrile, ethylene glycol, toluene, hexahydrotoluene, 1,2-dichloroethene, dimethylbenzene, hexamethylene,
1-METHYLPYRROLIDONE, pentane, methyl phenyl ethers anisole, butyl acetate, three fourth MEEs, isopropyl acetate, methyltetrahydrofuran, oil
One or more mixture in ether, trichloroacetic acid, trifluoroacetic acid and pyridine.
10. the preparation method of the porous nano-fibre material of carbon dioxide adsorption is used for as claimed in claim 2, and its feature exists
In described is diethanol amine, diethylenetriamine, triethylene tetramine, TEPA, monoamine containing amino-compound or polymer
One kind or two in base silane, diamino silanes, triamido silane, melamine, urea, polyethyleneimine and polyacrylamide
Plant the mixture of the above.
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| CN109778323A (en) * | 2019-01-17 | 2019-05-21 | 河南科技学院 | Porous copolymer of acrylamide polystyrene composite fibre, preparation method and applications |
| CN110437002A (en) * | 2019-08-22 | 2019-11-12 | 四川大学 | Modifying agent increase soil fertility and preparation method thereof |
| CN110496528A (en) * | 2018-05-16 | 2019-11-26 | 天津工业大学 | A kind of method of normal temperature oxidation formaldehyde |
| CN111074572A (en) * | 2019-12-27 | 2020-04-28 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of fiber for resisting respiratory system viral diseases |
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| CN109778323A (en) * | 2019-01-17 | 2019-05-21 | 河南科技学院 | Porous copolymer of acrylamide polystyrene composite fibre, preparation method and applications |
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| CN111074572A (en) * | 2019-12-27 | 2020-04-28 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of fiber for resisting respiratory system viral diseases |
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| CN113171762A (en) * | 2021-04-27 | 2021-07-27 | 重庆科技学院 | Fiber-based adsorption material, preparation method thereof and application of recovered palladium |
| CN114130376A (en) * | 2021-11-25 | 2022-03-04 | 华南理工大学 | Paper-based composite adsorption material and preparation method and application thereof |
| CN114832792A (en) * | 2022-04-27 | 2022-08-02 | 山东微观生态研究中心有限公司 | Heavy metal trapping agent, preparation method and application thereof in industrial sewage treatment |
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