CN109701548A - A kind of monoblock type VOCs catalyst for catalytic combustion and preparation method thereof - Google Patents
A kind of monoblock type VOCs catalyst for catalytic combustion and preparation method thereof Download PDFInfo
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Abstract
The invention proposes a kind of monoblock type VOCs catalyst for catalytic combustion and preparation method thereof; first by macromolecular fibre felt carbonization treatment under certain condition; pore-creating is re-activated after obtaining carbon fiber felt; then by the carbon fiber felt of activity component impregnation to activation, it is dry after again under inert gas protection through specific temperature calcination processing up to monoblock type VOCs catalyst for catalytic combustion.The VOCs catalyst prepared using the preparation method has many advantages, such as that catalysis initial temperature is low, operating temperature range is wide, catalytic activity is high and the long-life.The present invention has the advantages such as preparation method is simple and effective, operation is easy, raw material sources are extensive, integral catalyzer stable structure obtained, thermal conductivity is good, Active components distribution is uniform, has pore structure abundant, has Specific adsorption to small molecule volatile organic matter, improve the problem of traditional monoblock type VOCs catalyst activity deficiency, preparation cost is low simultaneously, and product property is stablized, and is suitable for industrialized production.
Description
Technical field
The present invention relates to VOCs purification treatment technology fields, are related to a kind of preparation method of VOCs catalyst for catalytic combustion,
Specifically a kind of monoblock type VOCs catalyst for catalytic combustion and preparation method thereof.
Background technique
Volatile organic matter (volatile organic compounds, abbreviation VOCs), which refers to, has higher saturated vapor
Pressure, the organic compound that volatilization is easier in normal temperature and pressure are a kind of relatively common and very important atmosphere pollution
Object.Volatile organic matter is mainly derived from the industries such as petrochemical industry, pharmacy, printing, spraying, motor vehicle and shoemaking, including hydrocarbon
Class, aldehydes, esters, ketone, halogenated hydrocarbons, aromatic hydrocarbon, polycyclic aromatic hydrocarbon etc..In the case where high concentration, VOCs can make human body certain
Lesion occurs in a short time for organ and body, or even causes acute poisoning；Even if being in the ring for a long time under low concentration
Also slow poisoning can be generated in border, it some times happens that phenomena such as carcinogenic, mutagenesis.
Production by Catalytic Combustion Process is one of method the most mature used by current VOCs field of purification, refers to and makees in catalyst
Under, VOCs is reacted with oxygen at low temperature and generates harmless carbon dioxide and water, to achieve the purpose that eliminate pollution.Cause
This, preparation high-performance catalyst for catalytic combustion is the key that the place of degradation removal VOCs.Traditional monoblock type VOCs catalyst is
Active component is loaded on honeycomb support, but gained loaded catalyst often has bad mechanical strength, mass-and heat-transfer
The disadvantages such as energy is poor, be easily saturated, load active component is easy to fall off, catalytic activity is low.
Since loaded catalyst has the advantages that preparation is easy, carrier diversity, filtration resistance is small, it has been increasingly becoming
The hot spot of VOCs catalyst for catalytic combustion research.Chinese patent CN201110422286.9 alumina globule is carrier, with oxidation
Aluminium, cerium oxide, gallium oxide, cerium zirconium sosoloid mixture as coating, using Pd as active component, by pretreatment, coating
Catalyst is made in preparation, dipping and the post-processing of slurries.Chinese patent 201710126503 using cordierite honeycomb ceramic as carrier,
Pd is distributed on carrier and obtains powder through drying and roasting, then add binder, slurry is made in lubricant water, green coated on violet
Catalyst is made through drying and roasting on stone honeycomb ceramic carrier.But above-mentioned method for preparing catalyst and catalyst itself are deposited
It is many and diverse in preparation process, the problems such as cost of raw material is high, active component is easily detached from the carrier, mechanical strength is low.
Summary of the invention
The object of the present invention is to provide a kind of preparation sides of integral catalyzer suitable for the removing of low concentration VOCs low temperature
Method can reach effective system of integral catalyzer by Vehicle element, carrier impregnation, three one step preparation method of calcination processing
Standby purpose.The present invention has preparation method simple and effective, and raw material are easy to get, and integral catalyzer shape obtained is regular, compare table
Area is big, catalyst activity component good dispersion, the advantage that active site is more and catalytic activity is high.
The present invention provides a kind of monoblock type VOCs catalyst for catalytic combustion and preparation method thereof, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme:
A kind of preparation method of monoblock type VOCs catalyst for catalytic combustion, in turn includes the following steps:
(1) it will be carbonized to obtain carbon fiber felt again after macromolecular fibre felt oxidative stabilization；
(2) it activates the carbon fiber felt that step (1) obtains to obtain active carbon fiber felt carrier；
(3) soluble metallic salt of producible active component is dissolved into water in proportion, then incipient impregnation to work
Property carbon fiber felt carrier in and dry removal moisture content, obtain carbon fiber felt loaded article；
(4) under inert gas protection, carbon fiber felt loaded article obtained by step (3) is carried out at calcining in 400~600 DEG C
Reason is cooled to after room temperature up to monoblock type VOCs catalyst for catalytic combustion.
Preferably, in step (1), the macromolecular fibre is various conventional fibres in the art.
It is highly preferred that the macromolecular fibre is polyurethane fiber, pitch-based fiber, polystyrene fibre in step (1)
Dimension, polyester fiber, acrylic fiber, Fypro, polypropylene fibre, polyacrylonitrile fibre, polyvinyl chloride fibre fiber, in cellulose fibre
1 kind or at least two kinds of of combination.
Preferably, in step (1), the size of the fibrofelt can be determining according to actual operation requirements and be adjusted.
It is highly preferred that the size of the fibrofelt is that thickness is not less than 0.5cm, and length is not less than 10cm in step (1),
Width is not less than 5cm.
Preferably, in step (1), the oxidative stabilization can be used the various conventional stabilization methods in this field and carry out.
It is highly preferred that the oxidative stabilization is that macromolecular fibre felt is placed in oxidation furnace, then under an oxygen-containing atmosphere
So that fiber molecule is crosslinked reaction through certain temperature reaction and obtains stabilized fibrofelt.
It is further preferred that the oxidation furnace be specially rotary furnace, Muffle furnace, superhigh temperature baking oven, in fluidized-bed reactor
1 kind or at least two kinds of of combination.
It is further preferred that the oxygen-containing atmosphere is one of air or oxygen gas and inert gas by volume 10
The gaseous mixture of~50:100 mixing.
It is further preferred that the flow velocity of the oxygen-containing atmosphere is 0.1~30L/min.
It is further preferred that the reaction temperature is 200~300 DEG C；The reaction time is 1~12h.
Preferably, in step (1), the various conventional silicon carbide equipment processing in this field are can be used in the carbonization.
It is highly preferred that the carbonization is using shaft furnace, atmosphere furnace, batch-type furnace, roller kilns, a kind in pushed bat kiln or extremely
Few 2 kinds of combination.
It is further preferred that the carbonization is using atmosphere furnace.
Preferably, in step (1), the carbonization is to be heated up under inert gas protection with the rate of 0.5~20 DEG C/min
To carburizing temperature.
It is highly preferred that the carburizing temperature is 750~1100 DEG C.
It is further preferred that the carburizing temperature is 800~900 DEG C.
Preferably, in step (1), the time of the carbonization treatment is 2~6 hours.
It is highly preferred that the time of the carbonization treatment is 2~4 hours.
Preferably, in step (2), the various Conventional activation methods processing in this field are can be used in the activation.
It is highly preferred that the activation is to carry out surface structural modification, the activation to gained carbon fiber felt using activator
Agent is vapor, carbon dioxide, a kind or at least two kinds of combinations in hydrogen peroxide.
It is highly preferred that the activation is using a kind or at least 2 in rotary furnace, fixed bed reactors, fluidized-bed reactor
Kind combination carries out.
It is highly preferred that the activator is vapor, a kind or at least two kinds of combinations in carbon dioxide, hydrogen peroxide.
Preferably, in step (2), the activation temperature is 600~800 DEG C.
Preferably, in step (2), the activation time is 1~3 hour.
Preferably, in step (3), the active component is the metal oxide with electron hole.
It is highly preferred that the active component is copper oxide, a kind or at least two kinds of in manganese oxide, cerium oxide, cobalt oxide
Combination.
Preferably, in step (3), the soluble metallic salt is mantoquita, manganese salt, cerium salt and cobalt salt.
It is highly preferred that the soluble metallic salt be copper, manganese, cerium, the sulfate of cobalt, nitrate, a kind in chlorate or
Combination of more than two kinds.
Preferably, in step (3), the drying carries out in electrically heated drying cabinet, and drying temperature is 80~150 DEG C.
Preferably, in step (3), in the carbon fiber felt loaded article, active component copper oxide, manganese oxide, cerium oxide,
Cobalt oxide respectively accounts for the 1~15% of active carbon fiber felt gross mass.
It is highly preferred that active component copper oxide accounts for the 1 of active carbon fiber felt gross mass in the carbon fiber felt loaded article
~5%.
It is highly preferred that active component manganese oxide accounts for active carbon fiber felt gross mass in the carbon fiber felt loaded article
10~15%.
It is highly preferred that active component cerium oxide accounts for active carbon fiber felt gross mass in the carbon fiber felt loaded article
10~15%.
It is highly preferred that active component cobalt oxide accounts for the 1 of active carbon fiber felt gross mass in the carbon fiber felt loaded article
~5%.
Preferably, in step (4), the inert gas is a kind or at least two kinds of of combination in nitrogen, helium and argon gas.
Preferably, in step (4), the calcining is carried out in box atmosphere furnace or Muffle furnace.
Preferably, in step (4), the calcination time is 1~4 hour.
The present invention provides the monoblock type VOCs efficient catalytic combustion catalysts as made from above-mentioned preparation method.Wherein, institute
It states monoblock type VOCs efficient catalytic combustion catalyst to be negative the regular carbon felt block of carrying active component, specific surface area is not less than
50m2/g。
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get each preferable reality of the present invention
Example.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is from the concept of integral catalyzer, using the good fibrofelt of high mechanical strength and flexibility as matrix,
Pore-creating is activated through special process, middle micropore abundant and manufacture Large ratio surface structure are artificially introduced, then by activity component impregnation
Into duct, the dispersibility and nanoscale of active component are improved, avoids the problem of active component falls off, catalyst is whole
Stability and service life significantly improve.In addition, high-specific surface area and middle micropore abundant help to adsorb and capture VOCs points
Son provides more reactivity sites, keeps the light-off temperature of VOCs catalyst lower, and significantly improves its catalysis burning
Catalytic activity.
It is provided by the invention a kind of using active carbon fiber felt as the monoblock type VOCs catalyst for catalytic combustion and its system of carrier
Preparation Method.Active carbon fiber felt has structure uniform, and pore structure is flourishing, and large specific surface area, vapour lock is small, and permeability height etc. is excellent
Point.Raw material sources used in the present invention are extensive, environmentally protective, cheap, reduce the production of VOCs catalyst for catalytic combustion
Cost；Used technique and equipment are simple, easy to operate, easy to implement, and integral catalyzer shape obtained is regular, gas
Flow resistance power is low and is evenly distributed.
The present invention also has a characteristic that
1, the present invention generates support type monoblock type VOCs catalysis combustion by impregnating, calcining using active carbon fiber felt as carrier
Catalyst is burnt, preparation process is simple, and raw material are easy to get, and production cost is low, commercial viability with higher.
2, the monoblock type active carbon fiber felt used in the present invention helps to maintain catalyst structure stability, can enhance work
Binding force between property component and carrier, active component good dispersion, active site is more, not easily to fall off, it is not necessary that binder is added,
Avoid secondary pollution.
3, the present invention uses active carbon fiber felt for carrier, and carrier itself is multi-pore structure, and air-flow pressure reduces, catalysis combustion
Reaction resistance is small when burning VOCs；Biggish specific surface area increases the contacting efficiency with reactant VOCs simultaneously, improves catalysis
Activity improves the problem of the catalytic activity deficiency of traditional monoblock type VOCs catalyst, is conducive to industrialization promotion.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
Polyester fiber felt is cut by the dimensions of long 15cm, width 10cm, thickness 2cm, puts into rotary furnace and is passed through 2L/
Then the air of min is warming up to 230 DEG C with 2 DEG C/min and reacts 8 hours, discharges after being cooled to room temperature；Gained fibrofelt is packed into
In atmosphere furnace, 800 DEG C are warming up to 2 DEG C/min in a nitrogen atmosphere and is carbonized 2 hours, is discharged after being cooled to room temperature；By gained carbon
Change fibrofelt to be fitted into rotary furnace, be passed through the vapor of 200mL/min, is warming up to 600 DEG C with 2 DEG C/min and activates 2 hours, cooling
It discharges after to room temperature；By copper sulphate, manganese sulfate, cobaltous sulfate, cerous sulfate respectively according to the 5% of activated carbon fiber felt substrate quality,
5%, 3%, 3% ratio mixed dissolution in water and is impregnated into carbon fiber felt, is then placed in 100 DEG C of air dry oven
The carbon fiber felt for loading active component presoma, is finally fitted into atmosphere furnace by dry water intaking, in a nitrogen atmosphere with 2 DEG C/
Min is warming up to 500 DEG C and calcines 2 hours, discharges after being cooled to room temperature up to monoblock type VOCs efficient catalytic combustion catalyst.
Embodiment 2
Polyester fiber felt is cut by the dimensions of long 15cm, width 10cm, thickness 2cm, puts into rotary furnace and is passed through 2L/
Then the air of min is warming up to 230 DEG C with 2 DEG C/min and reacts 8 hours, discharges after being cooled to room temperature；Gained fibrofelt is packed into
In atmosphere furnace, 800 DEG C are warming up to 2 DEG C/min in a nitrogen atmosphere and is carbonized 2 hours, is discharged after being cooled to room temperature；By gained carbon
Change fibrofelt to be fitted into rotary furnace, be passed through 200mL/min carbon dioxide gas, is warming up to 600 DEG C with 2 DEG C/min and activates 2 hours,
It discharges after being cooled to room temperature；By copper sulphate, manganese sulfate, cobaltous sulfate, cerous sulfate respectively according to activated carbon fiber felt substrate quality
5%, 8%, 3%, 3% ratio mixed dissolution in water and is impregnated into carbon fiber felt, is then placed in 100 DEG C of forced air drying
The carbon fiber felt for loading active component presoma, is finally fitted into atmosphere furnace, in a nitrogen atmosphere with 2 by dry water intaking in case
DEG C/min is warming up to 500 DEG C and calcines 2 hours, it is cooled to after room temperature and discharges up to monoblock type VOCs efficient catalytic combustion catalyst.
Embodiment 3
Pitch-based fiber felt is cut by the dimensions of long 15cm, width 10cm, thickness 2cm, puts into rotary furnace and is passed through 2L/
Then the air of min is warming up to 270 DEG C with 2 DEG C/min and reacts 4 hours, discharges after being cooled to room temperature；Gained fibrofelt is packed into
In atmosphere furnace, 800 DEG C are warming up to 2 DEG C/min in a nitrogen atmosphere and is carbonized 2 hours, is discharged after being cooled to room temperature；By gained carbon
Change fibrofelt to be fitted into rotary furnace, be passed through the vapor of 200mL/min, is warming up to 600 DEG C with 2 DEG C/min and activates 2 hours, cooling
It discharges after to room temperature；By copper sulphate, manganese sulfate, cobaltous sulfate, cerous sulfate respectively according to the 5% of activated carbon fiber felt substrate quality,
5%, 3%, 3% ratio mixed dissolution in water and is impregnated into carbon fiber felt, is then placed in 100 DEG C of air dry oven
The carbon fiber felt for loading active component presoma, is finally fitted into atmosphere furnace by dry water intaking, in a nitrogen atmosphere with 2 DEG C/
Min is warming up to 500 DEG C and calcines 2 hours, discharges after being cooled to room temperature up to monoblock type VOCs efficient catalytic combustion catalyst.
Embodiment 4
Polyacrylonitrile fibre felt is cut by the dimensions of long 15cm, width 10cm, thickness 2cm, puts into rotary furnace and is passed through
Then the air of 2L/min is warming up to 250 DEG C with 2 DEG C/min and reacts 6 hours, discharges after being cooled to room temperature；By gained fibrofelt
It is fitted into atmosphere furnace, is warming up to 800 DEG C in a nitrogen atmosphere with 2 DEG C/min and is carbonized 2 hours, discharge after being cooled to room temperature；By institute
It obtains carbon fibre felt to be fitted into rotary furnace, is passed through 200mL/min carbon dioxide gas, 600 DEG C of activation 2 are warming up to 2 DEG C/min
Hour, it discharges after being cooled to room temperature；By copper sulphate, manganese sulfate, cobaltous sulfate, cerous sulfate respectively according to activated carbon fiber felt matrix matter
5%, 8%, 3%, 3% ratio mixed dissolution of amount in water and is impregnated into carbon fiber felt, is then placed in 100 DEG C of air blast
The carbon fiber felt for loading active component presoma, is finally fitted into atmosphere furnace, in nitrogen atmosphere by dry water intaking in drying box
Under be warming up to 500 DEG C with 2 DEG C/min and calcine 2 hours, be cooled to after room temperature to discharge and be urged up to the burning of monoblock type VOCs efficient catalytic
Agent.
Embodiment 5
Polyacrylonitrile fibre felt is cut by the dimensions of long 15cm, width 10cm, thickness 2cm, puts into rotary furnace and is passed through
Then the air of 2L/min is warming up to 250 DEG C with 2 DEG C/min and reacts 6 hours, discharges after being cooled to room temperature；By gained fibrofelt
It is fitted into atmosphere furnace, is warming up to 800 DEG C in a nitrogen atmosphere with 2 DEG C/min and is carbonized 2 hours, discharge after being cooled to room temperature；By institute
It obtains carbon fibre felt to be fitted into rotary furnace, is passed through the vapor of 200mL/min, be warming up to 600 DEG C with 2 DEG C/min and activate 2 hours,
It discharges after being cooled to room temperature；By copper sulphate, manganese sulfate, cobaltous sulfate, cerous sulfate respectively according to activated carbon fiber felt substrate quality
5%, 5%, 3%, 3% ratio mixed dissolution in water and is impregnated into carbon fiber felt, is then placed in 100 DEG C of forced air drying
The carbon fiber felt for loading active component presoma, is finally fitted into atmosphere furnace, in a nitrogen atmosphere with 2 by dry water intaking in case
DEG C/min is warming up to 500 DEG C and calcines 2 hours, it is cooled to after room temperature and discharges up to monoblock type VOCs efficient catalytic combustion catalyst.
Comparative example 1
Pitch-based fiber felt is cut by the dimensions of long 15cm, width 10cm, thickness 2cm, puts into rotary furnace and is passed through 2L/
Then the air of min is warming up to 270 DEG C with 2 DEG C/min and reacts 4 hours, discharges after being cooled to room temperature；Gained fibrofelt is packed into
In atmosphere furnace, 800 DEG C are warming up to 2 DEG C/min in a nitrogen atmosphere and is carbonized 2 hours, is discharged after being cooled to room temperature；By copper sulphate,
Manganese sulfate, cobaltous sulfate, cerous sulfate are molten according to 5%, 5%, 3%, the 3% ratio mixing of activated carbon fiber felt substrate quality respectively
It in Xie Yushui and is impregnated into carbon fiber felt, is then placed in 100 DEG C of air dry oven dry water intaking, load is finally had into work
Property component presoma carbon fiber felt be fitted into atmosphere furnace, in a nitrogen atmosphere with 2 DEG C/min be warming up to 500 DEG C calcine 2 hours,
It discharges after being cooled to room temperature up to comparison VOCs catalyst for catalytic combustion.
Comparative example 2
Polyacrylonitrile fibre felt is cut by the dimensions of long 15cm, width 10cm, thickness 2cm, puts into rotary furnace and is passed through
Then the air of 2L/min is warming up to 250 DEG C with 2 DEG C/min and reacts 6 hours, discharges after being cooled to room temperature；By gained fibrofelt
It is fitted into atmosphere furnace, is warming up to 800 DEG C in a nitrogen atmosphere with 2 DEG C/min and is carbonized 2 hours, discharge after being cooled to room temperature；By sulphur
Sour copper, manganese sulfate, cobaltous sulfate, cerous sulfate are respectively according to 5%, 5%, 3%, 3% ratio of activated carbon fiber felt substrate quality
Mixed dissolution is in water and is impregnated into carbon fiber felt, is then placed in 100 DEG C of air dry oven dry water intaking, will finally bear
The carbon fiber felt of carrying active component presoma is fitted into atmosphere furnace, is warming up to 500 DEG C of calcinings in a nitrogen atmosphere with 2 DEG C/min
It 2 hours, discharges after being cooled to room temperature up to comparison VOCs combustion catalyst.
Above-described embodiment 1~5 and the catalyst of comparative example 1~2 are subjected to specific surface area and active testing, catalyst are loaded on
It is simulation gas, 30000h with the toluene of 500ppm concentration in fixed-bed reactor-1The synthesis of air of air speed is carrier gas (O2
Volume fraction is 20%, N2As Balance Air) carry out organic exhaust gas low-temperature catalytic oxidation performance evaluation.Reaction front and back toluene contains
Amount is detected by Shimadzu GC-2010Pro gas chromatographic detection, specific surface area by Mike's ASAP2460 specific surface area measuring instrument, detection
It the results are shown in Table 1.
Table 1
As it can be seen from table 1 VOCs catalyst made from Examples 1 to 5 is substantially better than comparative example 1 and comparative example 2 is made
VOCs catalyst.VOCs specific surface area of catalyst made from Examples 1 to 5 is significantly better than comparative example 1~2, has better
Catalysis oxidation toluene performance, toluene oxidation decomposition temperature are lower.After tested, VOCs catalyst made from Examples 1 to 5 is to toluene
The T50 (catalytic temperature of 50% purifying rate) of catalysis oxidation is substantially within 100 DEG C, T90 (the catalysis temperature of 90% purifying rate
Degree) within 120 DEG C, show splendid low-temperature catalyzed response characteristic.This mainly has benefited from the porous and Large ratio surface of carrier
The active component of long-pending feature, pore structure and bigger serface abundant and load forms synergistic effect, and reaction is effectively reduced
Energy barrier realizes low-temp reaction characteristic.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of preparation method of monoblock type VOCs catalyst for catalytic combustion, includes the following steps:
1) it will be carbonized to obtain carbon fiber felt again after macromolecular fibre felt oxidative stabilization；
2) it activates the carbon fiber felt that step (1) obtains to obtain active carbon fiber felt carrier；
3) soluble metallic salt of producible active component is dissolved into proportion in water, then incipient impregnation to active carbon fiber
It ties up in felt carrier and drying removes moisture content, obtain carbon fiber felt loaded article；
4) calcination processing, drop under inert gas protection, are carried out to load type carbon fibrofelt obtained by step (3) in 400~600 DEG C
Up to monoblock type VOCs catalyst for catalytic combustion after warming to room temperature.
2. preparation method as described in claim 1, it is characterised in that: in step (1), the macromolecular fibre is that polyurethane is fine
Dimension, pitch-based fiber, styroflex, polyester fiber, acrylic fiber, Fypro, polypropylene fibre, polyacrylonitrile are fine
Dimension, polyvinyl chloride fibre fiber, a kind or at least two kinds of of combination in cellulose fibre；The thickness of the fibrofelt is not less than 0.5cm, length
Not less than 10cm, width is not less than 5cm.
3. preparation method as described in claim 1, it is characterised in that: in step (1), the oxidative stabilization is by macromolecule
Fibrofelt is placed in oxidation furnace, then so that fiber molecule is crosslinked reaction through certain temperature reaction under an oxygen-containing atmosphere and is obtained surely
Surely the fibrofelt changed；
Wherein, the oxidation furnace is rotary furnace, Muffle furnace, superhigh temperature baking oven, a kind or at least two kinds of in fluidized-bed reactor
Combination；The oxygen-containing atmosphere is one of air or oxygen gas and inert gas mixing of mixing of 10~50:100 by volume
Close gas；The flow velocity of the oxygen-containing atmosphere is 0.1~30L/min；The reaction temperature is 200~300 DEG C；The reaction time is
1~12h.
4. preparation method as described in claim 1, it is characterised in that: in step (1), it is described carbonization refer to using shaft furnace,
Atmosphere furnace, batch-type furnace, roller kilns, a kind or at least two kinds of of combination in pushed bat kiln；The carbonization is under inert gas protection
Carburizing temperature is warming up to the rate of 0.5~20 DEG C/min；The carburizing temperature is 750~1100 DEG C, the carbonization treatment
Time is 2~6 hours.
5. preparation method as described in claim 1, it is characterised in that: in step (2), the activation is using activator to institute
Carbon fiber felt carry out surface structural modification, specifically 1 in rotary furnace, fixed bed reactors, fluidized-bed reactor kind or
At least two kinds of combinations carry out；The activator is vapor, carbon dioxide, a kind or at least two kinds of combinations in hydrogen peroxide；It is described
Activation temperature is 600~800 DEG C；The activation time is 1~3 hour.
6. preparation method as described in claim 1, it is characterised in that: in step (3), the active component is copper oxide, oxygen
Change manganese, cerium oxide, a kind or at least two kinds of of combination in cobalt oxide；The soluble metallic salt is mantoquita, manganese salt, cerium salt and cobalt
Salt；The drying carries out in electrically heated drying cabinet, and drying temperature is 80~150 DEG C.
7. preparation method as described in claim 1, it is characterised in that: in step (3), in the carbon fiber felt loaded article,
Active component copper oxide, manganese oxide, cerium oxide, cobalt oxide respectively account for the 1~15% of active carbon fiber felt gross mass.
8. preparation method as described in claim 1, it is characterised in that: in step (4), the calcining be in box atmosphere furnace or
It is carried out in Muffle furnace, the calcination time is 1~4 hour；The inert gas is for a kind in nitrogen, helium and argon gas or extremely
Few 2 kinds of combination.
9. a kind of monoblock type VOCs catalyst for catalytic combustion, is prepared by any one of claim 1~8 the method.
10. a kind of monoblock type VOCs catalyst for catalytic combustion as claimed in claim 9 is in the use of degradation removing low concentration VOCs
On the way.
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| CN112387286A (en) * | 2020-12-08 | 2021-02-23 | 山东大学 | Flexible woven-plastic catalytic material and preparation method and application thereof |
| CN113134363A (en) * | 2021-05-06 | 2021-07-20 | 桂林理工大学 | Biochar catalyst for treating organic wastewater containing antibiotics, preparation method of biochar catalyst and method for degrading organic wastewater containing antibiotics |
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| CN112387286A (en) * | 2020-12-08 | 2021-02-23 | 山东大学 | Flexible woven-plastic catalytic material and preparation method and application thereof |
| CN112387286B (en) * | 2020-12-08 | 2021-12-03 | 山东大学 | Flexible woven-plastic catalytic material and preparation method and application thereof |
| CN113134363A (en) * | 2021-05-06 | 2021-07-20 | 桂林理工大学 | Biochar catalyst for treating organic wastewater containing antibiotics, preparation method of biochar catalyst and method for degrading organic wastewater containing antibiotics |
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