CN109055914A - The compound fento material of carbon nanotube and its method of a kind of preparation of CVD method and application - Google Patents
The compound fento material of carbon nanotube and its method of a kind of preparation of CVD method and application Download PDFInfo
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- CN109055914A CN109055914A CN201810694605.3A CN201810694605A CN109055914A CN 109055914 A CN109055914 A CN 109055914A CN 201810694605 A CN201810694605 A CN 201810694605A CN 109055914 A CN109055914 A CN 109055914A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/26—Deposition of carbon only
Abstract
The invention belongs to the technical field of composite material, the compound fento material of carbon nanotube and its method and the application of a kind of CVD method preparation are disclosed.Method: (1) microfibre and wood-fibred by wet paper manufacturing method is made fento composite material precursor and drying；(2) fento composite material precursor is sintered in protective gas, obtains support precursor；(3) support precursor is placed in air and is calcined, obtain fento composite material carrier；(4) fento composite material carrier is placed in reaction unit, is passed through protective gas, be warming up to the temperature of carbon source decomposition, constant temperature is passed through carbon source and is reacted, and obtains the compound fento material of carbon nanotube.Method of the invention is simple, and prepared material can effectively reduce bed pressure drop, mass transfer enhancement heat transfer, and carbon nanotube and fento carrier have strong interaction, carbon nanotube leaching rate is effectively reduced, carbon nanotube homoepitaxial can effectively improve adsorption reaction efficiency in fento material surface.
Description
Technical field
The invention belongs to the technical fields of composite material, and in particular to a kind of carbon nano tube growth is in the compound of fento surface
Material and the preparation method and application thereof.The composite material is to utilize wet papermaking technology and chemical vapour deposition technique (CVD)
Technology is prepared.
Background technique
Carbon nanotube has many excellent properties, such as good thermal stability, chemical stability, mechanical performance, greatly
Draw ratio, reasonable pore-size distribution and good hydrophobicity.Currently, scientists have been found that carbon nanotube in Industry Waste
There is huge potentiality and advantage in the application of water process.But nevertheless, carbon nanotube industrially application still
Receive many restrictions.Industrially the more reactor of application is fixed bed reactors, because it possesses operation continuously, treating capacity
Greatly, the advantages that reaction process intermediate product is few, and reaction product quality is higher.But for common carbon nanotube, due to
Their partial size is too small, if directly applied in fixed bed reactors, it will forms very big bed resistance and mass transfer and passes
Resistance to heat so as to cause mass-transfer efficiency decline, reaction contacting efficiency decline, while increasing bed pressure drop.If by carbon nanometer
Pipe directly applies in the reaction of fixed bed wastewater treatment, and it is excessive that excessive resistance is easy to cause carbon nanotube to leach, and has secondary dirt
The danger of dye.Accordingly, it is desirable to develop a kind of economy it is new and effective and can be reduced carbon nanotube leaching make full use of
The method of carbon nanotube.
Fento composite material is a kind of with high porosity, the material of pore volume and unique tridimensional network.
Compared with conventional particles fixed bed, bed resistance and bed pressure is can be effectively reduced in the high porosity of fento composite material
Drop, to improve contacting efficiency and reaction efficiency.Meanwhile if carrier using metallic fiber as fento composite material, also
It can make material that there is good heat transfer property, be conducive to highly exothermic and highly endothermic reaction.In order to further increase and improve
The performance of fento composite material, such as: absorption property, catalytic performance, people generally can prepare fento together with other compositions
At covering material.Such as Sathistsuksanoh (N.Sathitsuksanoh, H.Yang, D.R.Cahela, et
al.Immobilization of CO2by aqueous K2CO3using microfibrous media entrapped
small particulates for battery and fuel cell applications[J].Journal of Power
Sources.173 (1) (2007) 478-486.) et al. be prepared for nickel fiber cladding active carbon fento composite material and be applied to
CO2Absorption in；Kalluri(R.R.Kalluri,D.R.Cahela,B.J.Tatarchuk.Comparative
heterogeneous contacting efficiency in fixed bed reactors:Opportunities for
new microstructured systems[J].Applied Catalysis B Environmental.90(3–4)
(2009) 507-515.) et al. be also prepared for stainless steel cladding Pd/y-Al2O3Catalyst is simultaneously applied to NH3Decomposition reaction in.
Phase although fento covering material has some superiority of fento composite material, between its particle and fento carrier for coating
Interreaction force is smaller, therefore particle is easy to be lost during the reaction.
How to obtain a kind of carbon nanotube be uniformly dispersed and not easily run off, stable structure and in fixed bed under pressure drop,
Resistance is small, contacting efficiency is high, and the good composite material of performance is one of people's problem to be solved.
Summary of the invention
A kind of preparation of the compound fento material of carbon nanotube the object of the present invention is to provide carbon nano tube growth in surface
Method.For the present invention by combining carbon nanotube with fento composite material, solution carbon nanotube particulate partial size is too small, is applied to
Bed pressure drop is excessive when fixed bed reactors, and mass and heat transfer resistance is larger, and carbon nanotube leaches the problems such as more.Present invention preparation
The compound fento material porosity with higher of carbon nanotube out, unique tridimensional network and uniform carbon nanotube
Distribution, can both play carbon nanotube in the advantage of industrial application, and can also embody fento composite material in fixation
Advantage in bed reaction process.Meanwhile the present invention, compared with traditional fento covering material, carbon nanotube is directly synthesized in fento
The surface of carrier has strong interaction force between carbon nanotube and carrier, therefore solves the leaching of covering material particle
The problem of, simultaneously because carbon nano tube growth is on the surface of the material, carbon nanotube is more evenly distributed compared with covering material, therefore can
To effectively improve its service efficiency and service life.Composite material of the invention has extraordinary performance and effect.
Another object of the present invention is to provide the compound fento materials of the carbon nanotube obtained by above-mentioned preparation method.
A further object of the present invention is to provide the applications of the compound fento material of above-mentioned carbon nanotube.The carbon nanotube is multiple
It closes fento material and is used as fixed bed adsorbent, especially wastewater treatment fixed bed adsorbent.Carbon nanotube prepared by the present invention is raw
Be longer than the compound fento material of carbon nanotube on surface with a thickness of 1-2mm, composite material of the invention is used as fixed bed adsorbent
When, compared to traditional fixed bed adsorbent, using this product can make fixed bed bed pressure drop reduce by 50% or more, inhale simultaneously
Attached rate and adsorption efficiency are improved to some extent, and be used for liquid phase reactor when, carbon nanotube does not leach out loss.
The compound fento material of carbon nanotube of the invention can also be used to prepare fixed bed catalyst.
The purpose of the present invention is achieved through the following technical solutions:
A kind of preparation method of the compound fento material of carbon nanotube, comprising the following steps:
(1) fento composite material precursor and drying is made by wet paper manufacturing method in microfibre and wood-fibred；
(2) it will be sintered in protective gas by dry fento composite material precursor, it is compound to obtain fento
Material support presoma；
(3) support precursor is placed in air and is calcined, obtain molding fento composite material carrier；
(4) fento composite material carrier is placed in reaction unit, is passed through protective gas, be warming up to the temperature of carbon source decomposition
Degree, constant temperature are passed through carbon source and are reacted, and obtain the compound fento material of carbon nanotube.
Wood-fibred described in step (1) is needle-leaved wood fibre and/or broad-leaved wood fiber.
Microfibre described in step (1) is stainless steel fibre, one in nickel fiber, copper fiber, glass fibre, polymer fiber
Kind or more, length 1-5mm, diameter is 5~10 μm.Wood-fibred beating degree is 20~30 °, and water content is 80%~90%.
Microfibre described in step (1): the mass ratio of wood-fibred are as follows: (1~8): 10.
Dry condition described in step (1) is 100 DEG C~110 DEG C dry 30~120min.
The temperature of sintering described in step (2) is 950~1100 DEG C, and the time of sintering is 15~30min；The sintering is excellent
It is selected as temperature programming sintering, 450~550 DEG C of 10~30min of constant temperature are specifically risen to from room temperature with 3~7 DEG C/min, then with 3
~7 DEG C/min is continuously heating to 950~1100 DEG C of 15~30min of constant temperature.
Protective gas described in step (2) is nitrogen, helium or argon gas.The protective gas atmosphere passes through repeatedly repeatedly
Lead to the operation of protection gas after vacuumizing again to realize.
The temperature of calcining described in step (3) is 400~550 DEG C, and the time of calcining is 240~360min；The calcining
Condition preferably with 1~5 DEG C/min rise to 400~550 DEG C from room temperature, 400-550 DEG C of 240~360min of constant temperature.
The temperature that carbon source described in step (4) is decomposed is 600~800 DEG C, and the time of constant temperature is 15~30min；The liter
The heating rate of temperature is 6~10 DEG C/min；Being passed through the time reacted after carbon source is 20~60min.
Protective gas described in step (4) is nitrogen, helium or argon gas.The protective gas atmosphere passes through repeatedly repeatedly
Lead to the operation of protection gas after vacuumizing again to realize.
Carbon source described in step (4) is more than one in methane, ethane, ethylene or acetylene, carbon source and protective gas body
Product flow-rate ratio is (30-50): (300-500).
When being passed through carbon source, it is not turned off protective gas and is passed through carbon source in the case where being passed through protective gas.
The compound fento material of carbon nanotube is prepared by the above method.
The compound fento material of carbon nanotube is used as fixed bed adsorbent.The fixed bed adsorbent adsorbs organic matter.
The organic matter is phenol and its derivatives.
The compound fento material of carbon nanotube of the invention can also be used to prepare fixed bed catalyst.
The pore size of composite material of the invention is adjustable, and structure is uniform, and load capacity is high, easily prepares, and has ideal machine
Tool intensity, the interaction force between carbon nanotube and fento carrier is strong, is applied to fixed-bed adsorber, can play carbon simultaneously
The advantage of nanotube and fento composite material both can significantly reduce bed resistance, increase mass-and heat-transfer efficiency and contacting efficiency,
To improving adsorption efficiency, and carbon nanotube can be made to be uniformly distributed on carrier, and reduce carbon nanotube in the reaction
It leaches and is lost.Tridimensional network can greatly eliminate channel, air-teturning mixed phenomenon and radial diffusion limitation etc. simultaneously, promote absorption
And catalytic efficiency.
The invention has the following advantages over the prior art:
(1) low manufacture cost, production method is simple, stable product quality, and using flexible works well, and has preferable
Industrial application value；
(2) material of the invention has the advantage of microfibre and carbon nano-tube material simultaneously, maintains leading for carbon nanotube
The performance of electrical property, chemical stability and microfibre, such as the thermal stability of stainless steel fibre, ductility and corrosion resistance；
(3) it is used as large pore material, bed pressure drop can be effectively reduced in the compound fento material of carbon nanotube, and mass transfer enhancement passes
Heat promotes catalytic efficiency；
(4) carbon nanotube and fento carrier have strong phase interaction in the compound fento material of carbon nanotube of the invention
With effectively reducing carbon nanotube leaching rate in reaction process；
(5) carbon nanotube distribution is more uniform in the compound fento material of carbon nanotube of the invention, and carbon nanotube is uniformly given birth to
It is longer than fento material surface, can effectively improve adsorption reaction efficiency.
Detailed description of the invention
Fig. 1 is surface sweeping Electronic Speculum (SEM) figure of the compound fento material of carbon nanotube prepared by embodiment 1, wherein a, b, c difference
Scheme for the SEM of different amplification；
Fig. 2 is transmission electron microscope (TEM) figure of the compound fento material of carbon nanotube prepared by embodiment 1, wherein a, and b is difference
The figure of amplification factor, c are the partial enlarged view of b；
Fig. 3 is the compound fento material adsorption applications of carbon nanotube of the preparation of embodiment 1 in fixed bed and granulated carbon nanometer
The absorption H103 resin comparison diagram of pipe ADSORPTION IN A FIXED BED m-methyl phenol.
Specific embodiment
Combined with specific embodiments below and attached drawing the invention will be further described, but embodiments of the present invention are not
It is limited to this.
The compound fento material of the carbon nanotube prepared in the embodiment of the present invention with a thickness of 1-2mm, consolidate compared to traditional
Bed fixed adsorber can make fixed bed bed pressure drop reduce by 20%~70% using composite material of the invention, and adsorption efficiency has
Certain to be promoted, when being used for liquid phase reactor, the leaching rate of carbon nanotube can be reduced to 0.
Embodiment 1
A kind of preparation method of the compound fento material of carbon nanotube, comprising the following steps:
(1) preparation of fento composite material carrier:
(1-1) weighs 7g stainless steel fibre (model SS-316L, length 3mm, diameter are 6.5 μm), 10g needlebush
Fiber is added in 2L water, after dissociating 10min in standard fibre dissociation device, the filtering shaping on manual handsheet machine, and 110 DEG C of bakings
The dry obtained fento composite material precursor of press；
Presoma is placed in progress temperature programming sintering in the high temperature shell and tube sintering furnace of nitrogen protection by (1-2)；Sintering
Before, sintering furnace first vacuumizes, and then leads to protection gas, and repetitive operation three times, then heats up by following procedure: with the speed of 5 DEG C/min
Rate, in 480 DEG C of constant temperature 20min, is then warming up to 1050 DEG C from room temperature to 480 DEG C with 4.7 DEG C/min, is sintered in 1050 DEG C
20min is then naturally cooling to room temperature, obtains fento composite material carrier presoma；
Fento composite material carrier presoma is placed in Muffle furnace by (1-3), is heated up by following procedure: with 1 DEG C/min's
Rate, in 550 DEG C of constant temperature 360min, obtains fento composite material carrier from room temperature to 550 DEG C；
(2) preparation of the compound fento material of carbon nanotube of the carbon nano tube growth in surface
Fento composite material carrier is placed in reaction unit, is passed through high pure nitrogen, flow 500mL/min, with 10 DEG C/
Min heating rate is warming up to 700 DEG C, and constant temperature 30min makes carrier reach 700 DEG C；It is passed through acetylene carbon source, flow 50ml/min,
Continue 60min, decompose carbon source and go out carbon nanotube in homoepitaxial on carrier surface, cooled to room temperature obtains carbon and receives
The compound fento material of mitron.The compound fento material of carbon nanotube manufactured in the present embodiment with a thickness of 1-2mm, pass through chemical gaseous phase
Sedimentation (CVD) preparation.
Scanning electron microscope (SEM) figure of the compound fento material of carbon nanotube manufactured in the present embodiment is as shown in Figure 1.The present embodiment
Transmission electron microscope (TEM) figure of the compound fento material of the carbon nanotube of preparation is as shown in Figure 2.It can be seen that carbon nanometer from SEM figure
The surface for the tridimensional network that pipe homoepitaxial is formed in stainless steel fibre, and diameter is about 50nm.Scheming us by TEM can
To see that one end of carbon nanotube is connected with stainless steel fibre, it was demonstrated that carbon nanotube is strictly to be grown directly upon stainless steel fibre
On surface.Carbon nanotube prepared by the present invention is multi-walled carbon nanotube, and wall thickness is about 12nm, and there are about 37 layers of graphite linings, interlayers
Away from about 0.35nm.
The performance test of the compound fento material of carbon nanotube:
The compound fento material of carbon nanotube obtained is used for the pressure fall-off test of fixed bed reaction first.It is sent out by experiment
It is existing, using the fixed bed reactors of material mating 3cm particle carbon nanotube filling 1cm of the invention, under the same conditions, pressure drop
Only the 33% of the fixed bed reactors of 4cm particle carbon nanotube filling, it was demonstrated that bed resistance can be effectively reduced in the present invention, mentions
High mass-and heat-transfer efficiency.
In addition, the m-methyl phenol that the compound fento material of carbon nanotube produced by the present invention is used for fixed bed reaction is adsorbed
Test.Bed is 1cm product of the present invention and 3cm particle carbon nanotube, and adsorption temp is 30 DEG C, feed flow rate 2ml/min,
Methylphenol initial concentration is 10mg/L.As a comparison, it tests while using the carbon nano-tube filled fixed bed of 4cm particle in phase
Adsorption experiment is carried out under the conditions of.Experiment gained absorption H103 resin is as shown in Figure 3.By calculating, particle ADSORPTION IN A FIXED BED effect
Rate is 75%, uses ADSORPTION IN A FIXED BED efficiency of the invention as 79%.Meanwhile by curve as can be seen that using the present invention
The slope of Breakthrough Curves for Fixed Beds be significantly greater than particle fixed bed, illustrate that the present invention can effectively improve the contact of adsorption process
Efficiency, to improve the rate of adsorption.
Embodiment 2
A kind of preparation method of the compound fento material of carbon nanotube, comprising the following steps:
(1) preparation of fento composite material carrier:
(1-1) weighs 6g stainless steel fibre (model SS-316L, length 2mm, diameter are 6.5 μm), 10g needlebush
Fiber is added in 2L water, after dissociating 10min in standard fibre dissociation device, the filtering shaping on manual handsheet machine, and 110 DEG C of bakings
The dry obtained fento composite material precursor of press；
Presoma is placed in progress temperature programming sintering in the high temperature shell and tube sintering furnace of nitrogen protection by (1-2)；Sintering
Before, sintering furnace first vacuumizes, and then leads to protection gas, and repetitive operation three times, then heats up by following procedure: with the speed of 5 DEG C/min
Rate, in 480 DEG C of constant temperature 20min, is then warming up to 1050 DEG C from room temperature to 480 DEG C with 4.7 DEG C/min, is sintered in 1050 DEG C
20min is then naturally cooling to room temperature, obtains fento composite material carrier presoma；
Fento composite material carrier presoma is placed in Muffle furnace by (1-3), is heated up by following procedure: with 1 DEG C/min's
Rate, in 550 DEG C of constant temperature 360min, obtains fento composite material carrier from room temperature to 550 DEG C；
(2) preparation of the compound fento material of carbon nanotube of the carbon nano tube growth in surface
Fento composite material carrier is placed in reaction unit, is passed through high pure nitrogen, flow 500mL/min, with 10 DEG C/
Min heating rate is warming up to 600 DEG C, and constant temperature 30min makes carrier reach 600 DEG C；It is passed through ethylene carbon source, flow 50ml/min,
Continue 40min, decompose carbon source and go out carbon nanotube in homoepitaxial on carrier surface, cooled to room temperature obtains carbon and receives
The compound fento material of mitron.The application preparation the compound fento material of carbon nanotube with a thickness of 1-2mm.
The compound fento material of carbon nanotube produced by the present invention is used for the m-methyl phenol absorption test of fixed bed reaction.
Bed is 1cm product of the present invention and 3cm particle carbon nanotube, and adsorption temp is 30 DEG C, feed flow rate 2ml/min, methyl
Initial phenol concentration is 10mg/L.By calculate, use ADSORPTION IN A FIXED BED efficiency of the invention be 80%, and pass through curve can
To find out, the slope using Breakthrough Curves for Fixed Beds of the invention is larger, illustrates that the present invention can effectively improve adsorption process
Contacting efficiency, to improve the rate of adsorption.
Embodiment 3
A kind of preparation method of the compound fento material of carbon nanotube, comprising the following steps:
(1) preparation of fento composite material carrier:
(1-1) weighs 7g stainless steel fibre (model SS-316L, length 3mm, diameter are 6.5 μm), 10g needlebush
Fiber is added in 2L water, after dissociating 10min in standard fibre dissociation device, the filtering shaping on manual handsheet machine, and 110 DEG C of bakings
The dry obtained fento composite material precursor of press；
Presoma is placed in progress temperature programming sintering in the high temperature shell and tube sintering furnace of nitrogen protection by (1-2)；Sintering
Before, sintering furnace first vacuumizes, and then leads to protection gas, and repetitive operation three times, then heats up by following procedure: with the speed of 5 DEG C/min
Rate, in 480 DEG C of constant temperature 20min, is then warming up to 1050 DEG C from room temperature to 480 DEG C with 4.7 DEG C/min, is sintered in 1050 DEG C
20min is then naturally cooling to room temperature, obtains fento composite material carrier presoma；
Fento composite material carrier presoma is placed in Muffle furnace by (1-3), is heated up by following procedure: with 1 DEG C/min's
Rate, in 550 DEG C of constant temperature 240min, obtains fento composite material carrier from room temperature to 550 DEG C；
(2) preparation of the compound fento material of carbon nanotube of the carbon nano tube growth in surface
Fento composite material carrier is placed in reaction unit, is passed through high pure nitrogen, flow 400mL/min, with 10 DEG C/
Min heating rate is warming up to 700 DEG C, and constant temperature 30min makes carrier reach 700 DEG C；It is passed through ethylene carbon source, flow 40ml/min,
Continue 60min, decompose carbon source and go out carbon nanotube in homoepitaxial on carrier surface, cooled to room temperature obtains carbon and receives
The compound fento material of mitron.The application preparation the compound fento material of carbon nanotube with a thickness of 1-2mm.
The compound fento material of carbon nanotube produced by the present invention is used for the m-methyl phenol absorption test of fixed bed reaction.
Bed is 1cm product of the present invention and 3cm particle carbon nanotube, and adsorption temp is 30 DEG C, feed flow rate 2ml/min, methyl
Initial phenol concentration is 10mg/L.By calculate, use ADSORPTION IN A FIXED BED efficiency of the invention be 79%, and pass through curve can
To find out, the slope using Breakthrough Curves for Fixed Beds of the invention is larger, illustrates that the present invention can effectively improve adsorption process
Contacting efficiency, to improve the rate of adsorption.
Claims (10)
1. a kind of preparation method of the compound fento material of carbon nanotube, it is characterised in that: the following steps are included:
(1) fento composite material precursor and drying is made by wet paper manufacturing method in microfibre and wood-fibred；
(2) it will be sintered in protective gas by dry fento composite material precursor, obtain fento composite material
Support precursor；
(3) support precursor is placed in air and is calcined, obtain molding fento composite material carrier；
(4) fento composite material carrier is placed in reaction unit, is passed through protective gas, be warming up to the temperature of carbon source decomposition,
Constant temperature is passed through carbon source and is reacted, and obtains the compound fento material of carbon nanotube.
2. the preparation method of the compound fento material of carbon nanotube according to claim 1, it is characterised in that: carbon in step (4)
Source and protective gas volume flow ratio are (30~50): (300~500)；
The temperature of sintering described in step (2) is 950~1100 DEG C；The temperature of calcining described in step (3) is 400~550 DEG C.
3. the preparation method of the compound fento material of carbon nanotube according to claim 1, it is characterised in that: institute in step (4)
Stating carbon source is more than one in methane, ethane, ethylene or acetylene；
Microfibre described in step (1) be stainless steel fibre, nickel fiber, copper fiber, glass fibre, in polymer fiber one kind with
On.
4. the preparation method of the compound fento material of carbon nanotube according to claim 1, it is characterised in that: institute in step (4)
The temperature for stating carbon source decomposition is 600~800 DEG C；Being passed through the time reacted after carbon source is 20~60min.
5. the preparation method of the compound fento material of carbon nanotube according to claim 1, it is characterised in that: institute in step (1)
State microfibre: the mass ratio of wood-fibred are as follows: (1~8): 10；
The time of sintering described in step (2) is 15~30min；The time of calcining described in step (3) is 240~360min.
6. the preparation method of the compound fento material of carbon nanotube according to claim 1, it is characterised in that: institute in step (2)
It states and is sintered to temperature programming sintering, 450~550 DEG C of 10~30min of constant temperature are specifically risen to from room temperature with 3~7 DEG C/min, then
950~1100 DEG C of 15~30min of constant temperature are continuously heating to 3~7 DEG C/min；
The condition of calcining described in step (3) is to rise to 400~550 DEG C from room temperature with 1~5 DEG C/min, 400-550 DEG C of constant temperature
240~360min；
The time of constant temperature described in step (4) is 15~30min；The heating rate of the heating is 6~10 DEG C/min.
7. the preparation method of the compound fento material of carbon nanotube according to claim 1, it is characterised in that: institute in step (2)
Stating protective gas is nitrogen, helium or argon gas；
Protective gas described in step (4) is nitrogen, helium or argon gas；
Wood-fibred described in step (1) is needle-leaved wood fibre and/or broad-leaved wood fiber；Dry condition described in step (1) is
100 DEG C~110 DEG C dry 30~120min.
8. a kind of compound fento material of carbon nanotube obtained by any one of claim 1~7 preparation method.
9. the application of the compound fento material of carbon nanotube according to claim 8, it is characterised in that: the carbon nanotube is compound
Fento material is used as fixed bed adsorbent.
10. the application of the compound fento material of carbon nanotube according to claim 8, it is characterised in that: the carbon nanotube is multiple
It closes fento material and is used to prepare fixed bed catalyst.
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| CN111673086A (en) * | 2020-05-27 | 2020-09-18 | 华南理工大学 | Porous fiber liquid absorption core with surface in-situ grown carbon nano tube and preparation method |
| CN112973693A (en) * | 2021-03-23 | 2021-06-18 | 北京师范大学珠海校区 | Microfiber composite nano metal catalyst and preparation method and application thereof |
| CN112973693B (en) * | 2021-03-23 | 2022-01-04 | 北京师范大学珠海校区 | Microfiber composite nano metal catalyst and preparation method and application thereof |
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