CN103433063B - A kind of cordierite of surface modification and its preparation method and application - Google Patents
A kind of cordierite of surface modification and its preparation method and application Download PDFInfo
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- CN103433063B CN103433063B CN201310358768.1A CN201310358768A CN103433063B CN 103433063 B CN103433063 B CN 103433063B CN 201310358768 A CN201310358768 A CN 201310358768A CN 103433063 B CN103433063 B CN 103433063B
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Abstract
The invention discloses cordierite of a kind of surface modification and its preparation method and application, cordierite dielectric surface is made to wrap up one layer of SiOC presoma first with sol impregnation method, then the polystyrene microsphere utilizing emulsion polymerization to prepare cross-links with cordierite sample, finally composite crosslinking body is pyrolyzed, surface must be arrived there is the cordierite of nanometer porous structure.Technical scheme overcomes the defect that existing particulate matter filtering bodies main passive regeneration process temperature is too high, nano level pore space structure reduces the ignition point of carbon black, improve the conversion ratio of carbon black, beneficially particulate matter filtering bodies to regenerate in diesel engine vent gas processing procedure.
Description
Technical field
The invention belongs to be catalyzed carbon-smoke combustion technical field, more particularly, relate to a kind of making on cordierite surface and receive
The preparation method and applications of meter level porous.
Background technology
Diesel car occupies increasing share by feat of good mobility and economy at automotive field, but
In succession put into effect stricter Abgasgesetz along with various countries, exhaust emissions of diesel engine has become as restriction diesel engine to be developed further
Bottleneck factor.And particulate matter (PM) the especially PM2.5 in diesel engine vent gas has stronger carcinogenesis to human body.At present,
Particulate matter filtering bodies (DPF) is one of post-processing technology generally acknowledging the discharge of maximally effective reduction diesel particulate at present.But
Along with the deposition of soot particulate, pressure drop raises, causes the reduction of engine power and fuel economy, it is necessary to carry out DPF
Regeneration.The regeneration of DPF mainly has two ways: one is initiative regeneration, i.e. makes dpf temperature reach particulate matter by external energy
Ignition point, be deposited on filtering bodies dielectric surface particulate matter burning；Another kind is passive regeneration, i.e. relatively low
Under Tail Pipe Temperature, it is achieved the oxidation of particulate matter.Owing to during initiative regeneration, temperature is higher, cause DPF in regenerative process
Crackle easily occurs, damages the performance of DPF；Therefore, passive regeneration becomes the main side of particulate matter filtering bodies (DPF) regeneration research
To.It is deposited on the ignition point of the particulate matter of DPF dielectric surface and two factors about the macroscopic view of particulate matter and microcosmic physicochemical property
Exposure level with DPF dielectric surface Yu particulate matter.Therefore, if the pattern changing DPF dielectric surface is allowed to and particulate matter chi
Very little match reach be in close contact, just can significantly reduce the passive regeneration of the ignition point of particulate matter, beneficially DPF.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, overcome existing particulate matter filtering bodies (DPF) main
The defect that passive regeneration process temperature is too high, it is provided that the preparation method of the cordierite of a kind of surface modification.Through surface modification
Cordierite can significantly reduce the ignition point of soot, beneficially DPF regenerates in diesel engine vent gas processing procedure.
The technical purpose of the present invention is achieved by following technical proposals:
Cordierite of a kind of surface modification and preparation method thereof, is carried out as steps described below:
Step 1, prepares polystyrene microsphere (PS) and the crosslinked colloidal sol of SiOC presoma mix homogeneously
Weigh the hydrogen containing siloxane (PHMS) and 1 of equal in quality number, 3,5,7-tetramethyl-1,3,5,7-tetravinyl
Cyclotetrasiloxane (D4Vi) mix, be then added thereto to methyl vinyl silicone coordination platinum catalyst, more wherein
Add the polystyrene microsphere (PS) of 0.1-1. mass fraction, be uniformly dispersed.
In above-mentioned preparation process, select ultrasonic disperse mode that system is disperseed.
In above-mentioned preparation process, methyl vinyl silicone coordination platinum catalyst (platinum selected by described coordination platinum catalyst
Content: 300ppm) purchased from Shenzhen platinum complex company limited, its chemical formula is as follows:
Catalyst charge is 1% the 3% of hydrogen containing siloxane and t etram-ethyltetravinylcyclotetrasiloxane gross mass,
The number of its addition is main affects the speed that cross-linking reaction is carried out.
Described polystyrene microsphere (PS) selects the polystyrene microsphere often selected in method for preparing template, as utilized emulsion
Polymerization prepares polystyrene (PS) microsphere, but needs the even particle size distribution of the polystyrene microsphere selected, the most single, example
Such as the PS microsphere of emulsion polymerization synthesis, its particle diameter is 200nm, and favorable dispersibility.According to volume ratio distilled water: dehydrated alcohol
=100:30 prepares ethanol water, with the PH of the NaOH solution regulation ethanol water that concentration is 0.1-0.3mol/L, makes solution
PH ＞ 7, then the butyl titanate ethanol solution that mass fraction is 4-8% is joined in above-mentioned ethanol water,
At 30-40 DEG C, stirring reaction 40min, obtains stable TiO 2 sol；The TiO 2 sol obtained is transferred to four mouthfuls
In flask, it is passed through protective gas nitrogen (N2), addition dodecyl sodium sulfate (emulsifying agent) in four-hole boiling flask the most successively,
Stupid ethylene, Ammonium persulfate. (initiator), 60-75 DEG C of constant temperature stirring reaction 8-10h, obtain polystyrene microsphere emulsion.Use quality
Concentration be 5% NaOH solution emulsion is carried out breakdown of emulsion, system is filtered, washs, at 60 DEG C be dried 24h obtain PS microsphere
Powder (the photonic crystal of opals structure preparation of Tang Rongnian, PS/TiO2 composite and sign, electronic component and material, 2003
Year).
Step 2, utilizes sol impregnation method to make cordierite dielectric surface parcel polystyrene microsphere (PS) and SiOC presoma
The crosslinked colloidal sol of mix homogeneously
When impregnating, being impregnated by cordierite medium in crosslinked colloidal sol, dip time (i.e. soaking) is at least
30min, preferably 2 4h.
Before impregnating, select cordierite dielectric surface is anticipated: cordierite is cut into length: wide: high=
8-10mm:8-10mm:15-17mm, puts into immersion 3-5h in the mixed solution that volume ratio acetone/ethanol is 3, is then placed in 60 DEG C
Baking oven is dried 2-3h；Dried sample is soaked in the nitric acid (HNO that concentration is 0.5-1mol/L3) 3-5h in solution, leaching
Sample deionized water after bubble puts into drying for standby in drying baker after cleaning.
After the infusion has taken place, air blast through hole after taking-up, make upper PS Yu the SiOC presoma of cordierite dielectric surface attachment
Crosslinked colloidal sol, is subsequently placed in constant temperature 4h at 50 DEG C, obtains the composite crosslinking body of cordierite, PS microsphere and SiOC presoma.
Step 3, is pyrolyzed the composite crosslinking body of preparation in step 2, must arrive surface and have nanometer porous structure
Cordierite
First it is pyrolyzed in inert environments: be warming up to from room temperature 20 25 DEG C according to the programming rate of 1-2 DEG C/min
700～900 DEG C, constant temperature 1 2h, then drop to room temperature 20 25 with the cooling rate of 3～6 DEG C/min in inert gas shielding
DEG C, by the composite crosslinking body after pyrolysis in atmosphere of inert gases, it is pyrolyzed the most again, according to the liter of 1-2 DEG C/min
Temperature speed is warming up to 700～900 DEG C from room temperature 20 25 DEG C, and then constant temperature 1h is down to the cooling rate with 3～6 DEG C/min
Room temperature 20 25 DEG C；
Described inert environments selects noble gas to be achieved, and is first passed through noble gas to get rid of in high temperature process furnances stove
Continuing after air to be passed through noble gas, be the most first passed through noble gas 4-6min, throughput controls, at 200-400sccm, to drain
After air in stove, continue to be passed through gas；Described noble gas selects argon, nitrogen or helium.
Having nanoscale Hierarchical porosity structure through modified cordierite dielectric surface, pore size distribution$ is more uniform,
Pore diameter range concentrates on 100-150nm, and pore structure thickness is 2-4 PS microsphere layer；Modified cordierite makes the conversion of carbon black
Rate significantly improves.The scanning electron microscope of 14 displays (uses HIT's X-650 scanning electron microscopy with reference to the accompanying drawings
Mirror) photo understands, and PS microsphere is orderly close-packed structure, shows to use the PS microsphere prepared of emulsion polymerization to have shape rule
Then, size structure homogeneous, diameter range integrated distribution is at 170-200nm；Composite crosslinking body through in argon, air sintering after,
The micro-sphere crosslinked part of PS has been formed in situ pore space structure, and the orderly closely packed pattern of PS microsphere obtains at cordierite dielectric surface
The duplication of height.PS microsphere and hole diameter in contrast accompanying drawing, find that the hole diameter after having sintered is slightly less than PS microsphere, this
It is owing to the framework of cavity structure is SiOC, during sintered into SiOC by SiOC presoma, a certain degree of contraction can occur
Caused.
By the cordierite dielectric surface after having sintered is done EDX energy spectrum analysis, show, modified dielectric surface
Elemental composition is Si, O, C and possibly together with a small amount of La, the atomic ratio that they are shared: [Si]=24.4%, [O]=58.84%,
[C]=15.27%；Therefore can tentatively judge sintering complete after dielectric surface composition be: Si1.6O3.85C。
Thermogravimetry (TGA) is used to investigate the modified cordierite (embodiment 1,4 and 5) of surface texture to carbon black particle
Catalytic oxidation performance.For simplifying experimentation, use the carbon black diesel oil substitute of Germany's goldschmidt chemical corporation (DegussaAG)
Dry soot in machine emission of carbon smoke particle, both main components are identical, and crystal grain is similar with specific surface area.Experimental apparatus is the U.S.
Perkin-Elmer company Pyris Diamond thermal analyzer, measuring temperature range is 30 800 DEG C, air atmosphere, gas stream
Speed 20.0ml/min, 10 DEG C/min of heating rate.Thermogravimetric curve is converted into soot conversion ratio and can obtain a smooth and continuous
Different temperatures under curve to soot conversion ratio, knowable to accompanying drawing 5, surface is that the modified cordierite of ordered porous structural is (real
Execute example 5) conversion ratio of carbon black is substantially better than unmodified cordierite at the very start, (the initiation temperature of pure white carbon black when 500 DEG C
Ti), surface is that the cordierite of ordered porous structural modification reaches 75% to the conversion ratio of carbon black, and not through any modification
The conversion ratio of carbon black is only had 30% by cordierite, and this shows, nano level pore space structure reduces the ignition point of carbon black, improves
The conversion ratio of carbon black.In accompanying drawing 5, the conversion ratio of carbon black is failed to show and is substantially better than embodiment 1 by embodiment 4, this is because real
Execute the pore space structure skewness in example 4, and be not multilayered structure, fail to show charcoal under the effect of systematic error
The raising of black conversion ratio.As can be seen here, the surface modification cordierite obtained according to technical solution of the present invention is realizing soot conversion
Middle realization is applied, it is achieved the temperature that soot converts is 30 800 DEG C, preferably 300 800 DEG C.
Accompanying drawing explanation
Fig. 1 is the SEM figure of the polystyrene microsphere piled up in order.
Fig. 2 is surface unmodified cordierite inner surface SEM figure.
Fig. 3 is that the cordierite inner surface SEM after surface modification schemes (1).
Fig. 4 is that the cordierite inner surface SEM after surface modification schemes (2)..
Fig. 5 is the cordierite sample conversion ratio activity curve to carbon black.
Detailed description of the invention
Further illustrating technical scheme below in conjunction with specific embodiment, wherein (PHMS analyzes containing hydrogen silicone oil
Pure) purchased from Jilin Huafeng Organic Silicon Co., Ltd.；1,3,5,7 tetramethyl 1,3,5,7 tetravinyl cyclotetrasiloxane
(D4Vi, analytical pure) purchased from Zhejiang San Men thousand rainbow Industrial Co., Ltd.；Methyl vinyl silicone coordination platinum catalyst (Pt%=
3000ppm) purchased from Shenzhen platinum complex company limited.
Embodiment 1
Cordierite is cut into length: wide: height=10mm:10mm:5mm, soaks in the mixed solution that acetone/ethanol volume ratio is 3
After bubble 4h, at 60 DEG C, it is dried 4h；Then dried cordierite is placed in the HNO that concentration is 1mol/L3Solution soaks 4h,
After repeatedly rinsing with distilled water, at 100 DEG C, it is dried 12h standby.It is that 1:1 weighs hydrogen containing siloxane (PHMS) according to mass ratio
With 1,3,5,7 tetramethyl 1,3,5,7 tetravinyl cyclotetrasiloxane (D4Vi) each 1g mixes in beaker, excusing from death vibration
10min, makes both be sufficiently mixed, and droplet concentration of instillation is the methyl vinyl silicone coordination platinum catalysis of 3000ppm wherein
Continue excusing from death vibration 10min after agent, obtain SiOC precursor solution.The cordierite of above-mentioned pretreatment is put in SiOC solution and soak
Air blast through hole after bubble 30min, makes cordierite dielectric surface adhere to last layer SiOC precursor solution, is then dried 4-at 60 DEG C
6h, prepares the sample at cordierite dielectric surface parcel SiOC presoma.
It is above-mentioned cordierite sample under the argon of flowing to be pyrolyzed, is first passed through 5min argon to drain furnace air, gas
Flow is 300sccm, continues to be passed through argon, is first according to the heating rate of 1 DEG C/min and rises to 440 DEG C of constant temperature 1h, then with 1 DEG C/
The heating rate of min rises to 800 DEG C, and constant temperature 1h cools to room temperature with the furnace；Then by the crosslinked of pyrolysis in argon in air
Pyrolysis, rises to 800 DEG C according to the heating rate of 1 DEG C/min from room temperature, after constant temperature 1h, cools to room temperature with the furnace, prepare surface
The cordierite sample of one layer of SiOC of parcel: SiOC@cordierite.
Embodiment 2
Cordierite is cut into length: wide: height=10mm:10mm:5mm, soaks in the mixed solution that acetone/ethanol volume ratio is 3
After bubble 4h, at 60 DEG C, it is dried 4h；Then dried cordierite is placed in the HNO that concentration is 1mol/L3Solution soaks 4h,
After repeatedly rinsing with distilled water, at 100 DEG C, it is dried 12h standby.It is that 1:1 weighs hydrogen containing siloxane (PHMS) according to mass ratio
With 1,3,5,7 tetramethyl 1,3,5,7 tetravinyl cyclotetrasiloxane (D4Vi) mix in beaker, excusing from death vibration 10min,
Make both be sufficiently mixed, after instilling a methyl vinyl silicone coordination platinum catalyst wherein, continue excusing from death vibration 10min,
Obtain SiOC precursor solution.The cordierite of above-mentioned pretreatment is put into SiOC solution soaks air blast through hole after 30min, make violet
Cordierite dielectric surface attachment last layer SiOC precursor solution, is then dried 4-6h at 60 DEG C, prepares at cordierite medium
The sample of surface parcel SiOC presoma.
Take 100ml distilled water and 30ml dehydrated alcohol in 250ml beaker, after room temperature magnetic agitation 10min by concentration be
The PH ≈ 9 of the NaOH solution regulation ethanol water of 0.1mol/L, transfers to 250ml four-hole boiling flask by the ethanol water obtained
In；The butyl titanate ethanol solution that 10ml mass fraction is 4% is added, stirring reaction at 40 DEG C in four-hole boiling flask
40min, obtains stable titania gel；0.2g dodecyl sodium sulfate (emulsifying agent) is added successively in four-hole boiling flask,
It is passed through protective gas N2, addition 5ml styrene and 0.2g Ammonium persulfate. (initiator), then isothermal reaction 8h at 75 DEG C,
Obtain polystyrene microsphere (PS) emulsion of the homogeneous monodispersity of size structure.With the NaOH solution breakdown of emulsion that concentration is 5%, to body
System carries out filtering, washs, 60 DEG C of dry 24h are standby.
Weigh hydrogen containing siloxane (PHMS) and 1,3,5,7-tetramethyl-1,3,5,7-tetravinyl cyclotetrasiloxanes
(D4Vi) each 1g is in 8ml beaker, excusing from death vibration 10min, makes both be sufficiently mixed, and instilling concentration in beaker is 3000ppm
Methyl vinyl silicone coordination platinum catalyst one, continue supersonic vibration 10min, obtain SiOC precursor solution；Forward
Drive polystyrene microsphere (PS) the ultrasonic disperse 2h afterwards adding 0.1g in liquid solution, obtain the PS suspension of polymolecularity.By upper
State the cordierite sample through pretreatment and transfer in PS suspension, after dipping 4h, air blast through hole after taking-up, it is subsequently placed in 50 DEG C
Lower constant temperature 4h, obtains composite crosslinking body.
Complex crosslinked is pyrolyzed under the argon of flowing, is first passed through 5min argon to drain furnace air, throughput
For 300sccm, continuing to be passed through argon, the heating rate being first according to 1 DEG C/min rises to 440 DEG C of constant temperature 1h, then with 1 DEG C/min's
Heating rate rises to 800 DEG C, and constant temperature 1h cools to room temperature with the furnace；Then by the hottest for the crosslinked of pyrolysis in argon
Solve, rise to 800 DEG C according to the heating rate of 1 DEG C/min from room temperature, after constant temperature 1h, cool to room temperature with the furnace, obtain inner surface tool
There is the cordierite of nano micropore structure.
Embodiment 3
The pre-treatment of cordierite in the present embodiment, surface SiOC presoma parcel and the preparation of PS microsphere, SiOC forerunner
The preparation of liquid solution is with embodiment 2, except for the difference that: add ultrasonic disperse after the PS microsphere of 0.4g in SiOC precursor solution
2h, obtains the PS suspension of polymolecularity.The above-mentioned cordierite sample through pretreatment is transferred in PS suspension, impregnates 4h
After, air blast through hole after taking-up, it is subsequently placed in constant temperature 4h at 50 DEG C, obtains composite crosslinking body.
Complex crosslinked is first pyrolyzed under the argon of flowing, passes first into 5min argon to drain furnace air, gas
Flow is 300sccm, continues to be passed through argon, is first according to the heating rate of 1 DEG C/min and rises to 440 DEG C of constant temperature 1h, then with 1 DEG C/
The heating rate of min rises to 800 DEG C, and constant temperature 1h cools to room temperature with the furnace；Then by the crosslinked of pyrolysis in argon at air
Middle pyrolysis, is placed in the crosslinked of pyrolysis in Muffle furnace, rises to 800 DEG C according to the heating rate of 1 DEG C/min from room temperature, constant temperature 1h
After, cool to room temperature with the furnace, obtain inner surface and there is the cordierite of nano micropore structure.
Embodiment 4
The front place of cordierite, surface SiOC presoma parcel and the preparation of PS microsphere, SiOC presoma in the present embodiment
The preparation of solution is with embodiment 2, except for the difference that: add ultrasonic disperse 2h after the PS microsphere of 0.8g in SiOC precursor solution,
Obtain the PS suspension of polymolecularity.The above-mentioned cordierite sample through pretreatment is transferred in PS suspension, after dipping 4h,
Air blast through hole after taking-up, is subsequently placed in constant temperature 4h at 50 DEG C, obtains composite crosslinking body.
Complex crosslinked is first pyrolyzed under the argon of flowing, passes first into 5min argon to drain furnace air, gas
Flow is 300sccm, continues to be passed through argon, is first according to the heating rate of 1 DEG C/min and rises to 440 DEG C of constant temperature 1h, then with 1 DEG C/
The heating rate of min rises to 800 DEG C, and constant temperature 1h cools to room temperature with the furnace；Then by the crosslinked of pyrolysis in argon at air
Middle pyrolysis, is placed in the crosslinked of pyrolysis in Muffle furnace, rises to 800 DEG C according to the heating rate of 1 DEG C/min from room temperature, constant temperature 1h
After, cool to room temperature with the furnace, obtain inner surface and there is the cordierite of nano micropore structure.
Embodiment 5
The preparation of the pre-treatment of cordierite in the present embodiment, surface SiOC presoma parcel and PS microsphere emulsion is with implementing
Example 2, except for the difference that: PS microsphere emulsion is not carried out breakdown of emulsion, but SiOC presoma will be wrapped up through pre-treatment and surface
Cordierite sample and 100ml polystyrene microsphere (PS) emulsion liquid are transferred in centrifuge tube, under rotating speed is 4000r/min from
Heart 24h, obtains polystyrene microsphere (PS) and the complex of cordierite, the complex obtained is dried at 60 DEG C 72h standby.
Weigh methyl hydrogen polysiloxanes (PHMS) and 1,3,5,7-tetramethyl-1,3,5,7-tetravinyl cyclotetrasiloxanes
(D4Vi) each 2g is in 8ml beaker, excusing from death vibration 10min, makes both be sufficiently mixed, and instilling concentration in beaker is 3000ppm
Methyl vinyl silicone coordination platinum catalyst one, continue supersonic vibration 10min, obtain SiOC precursor solution；Will be dry
Complex after dry is placed in SiOC precursor solution, at room temperature through vacuum pump sucking filtration 2h repeatedly, in emptying PS microsphere gap
Air, then sample is placed in constant temperature 4h at 50 DEG C, obtains the crosslinked of complex.
The crosslinked of complex is pyrolyzed under the argon of flowing, is first passed through 5min argon to drain furnace air, air-flow
Amount is 300sccm, continues to be passed through argon, and the heating rate being first according to 1 DEG C/min rises to 440 DEG C of constant temperature 1h, then with 1 DEG C/min
Heating rate rise to 800 DEG C, constant temperature 1h, cool to room temperature with the furnace；Then by the crosslinked of pyrolysis in argon in atmosphere
Pyrolysis, is placed in the crosslinked of pyrolysis in Muffle furnace, rises to 800 DEG C according to the heating rate of 1 DEG C/min from room temperature, constant temperature 1h
After, cool to room temperature with the furnace, after the sample after having sintered is carried out through hole process, obtain inner surface and have nano ordered
The cordierite of many hollow structures.
Above the present invention is done exemplary description, it should explanation, in the situation of the core without departing from the present invention
Under, any simple deformation, amendment or other those skilled in the art can not spend the equivalent of creative work equal
Fall into protection scope of the present invention.
Claims (5)
1. the cordierite of a surface modification, it is characterised in that be Si through modified cordierite medium composition1.6O3.85C, table
Mask has nanoscale Hierarchical porosity structure, and pore size distribution$ is more uniform, and pore diameter range concentrates on 100-150nm, according to following
Step is carried out:
Step 1, prepares polystyrene microsphere and the crosslinked colloidal sol of SiOC presoma mix homogeneously, i.e. weighs equal in quality number
Hydrogen containing siloxane and 1,3,5,7-tetramethyl-1,3,5,7-tetravinyl cyclotetrasiloxanes mix, the most wherein
Addition methyl vinyl silicone coordination platinum catalyst, then it is added thereto to the polystyrene microsphere of 0.1 mass fraction, dispersion is all
Even；
Step 2, utilizes sol impregnation method to make cordierite dielectric surface parcel polystyrene microsphere and SiOC presoma mix homogeneously
Crosslinked colloidal sol；
Step 3, is pyrolyzed the composite crosslinking body of preparation in step 2, must arrive surface and have the violet green grass or young crops of nanometer porous structure
Stone, is first pyrolyzed in inert environments: according to 1-2 DEG C/min programming rate from room temperature 20 25 DEG C be warming up to 700～
900 DEG C, constant temperature 1 2h, then drop to room temperature 20 25 DEG C with the cooling rate of 3～6 DEG C/min in inert gas shielding, will
Composite crosslinking body after being pyrolyzed in atmosphere of inert gases, is pyrolyzed, according to the programming rate of 1-2 DEG C/min the most again
It is warming up to 700～900 DEG C from room temperature 20 25 DEG C, constant temperature 1h, is then down to room temperature with the cooling rate with 3～6 DEG C/min
20—25℃。
The cordierite of a kind of surface modification the most according to claim 1, it is characterised in that in described step 1, selects super
System is disperseed by sound dispersing mode；Described polystyrene microsphere selects the PS microsphere of emulsion polymerization synthesis, and its particle diameter is
200nm, and favorable dispersibility；Described coordination platinum catalyst selects methyl vinyl silicone coordination platinum catalyst, described methyl
In vinylsiloxane coordination platinum catalyst, platinum content is 300ppm, and described catalyst charge is hydrogen containing siloxane and tetramethyl
1% the 3% of base tetravinyl cyclotetrasiloxane gross mass, its chemical formula is as follows:
The cordierite of a kind of surface modification the most according to claim 1, it is characterised in that in described step 2, is being carried out
During dipping, cordierite medium is impregnated in crosslinked colloidal sol, dip time at least 30min；Before impregnating, choosing
Select and cordierite dielectric surface is anticipated: cordierite is cut into length: be wide: height=8-10mm:8-10mm:15-17mm, put
Enter immersion 3-5h in the mixed solution that volume ratio acetone/ethanol is 3, be then placed in 60 DEG C of baking ovens being dried 2-3h；Will be dried
Sample be soaked in 3-5h in the aqueous solution of nitric acid that concentration is 0.5-1mol/L, sample deionized water after immersion is put after cleaning
Enter drying for standby in drying baker；After the infusion has taken place, air blast through hole after taking-up, make the cordierite dielectric surface upper PS of attachment with
The crosslinked colloidal sol of SiOC presoma, is subsequently placed in constant temperature 4h at 50 DEG C, obtains answering of cordierite, PS microsphere and SiOC presoma
Close crosslinked.
The cordierite of a kind of surface modification the most according to claim 3, it is characterised in that in described step 2, during dipping
Between be 2 4h.
The cordierite of a kind of surface modification the most according to claim 1, it is characterised in that in described step 3, be first passed through
Noble gas 4-6min, throughput controls at 200-400sccm, after draining the air in stove, continues to be passed through gas；Described inertia
Gas selects argon, nitrogen or helium.
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| CN201310358768.1A CN103433063B (en) | 2013-08-15 | 2013-08-15 | A kind of cordierite of surface modification and its preparation method and application |
| CN201510411867.0A CN105032456B (en) | 2013-08-15 | 2013-08-15 | Surface is modified application of the cordierite in soot conversion is realized |
| CN201510413337.XA CN105032458B (en) | 2013-08-15 | 2013-08-15 | A kind of method for preparing the modified cordierite in surface |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101612575A (en) * | 2009-07-10 | 2009-12-30 | 天津大学 | Fe 2O 3And V 2O 5The use for diesel engine Catalysts and its preparation method of double activity component |
| CN102125855A (en) * | 2010-12-29 | 2011-07-20 | 天津大学 | SiOC porous ceramic supported La0.9K0.1CoO3 nano particle catalyst and preparation method |
| CN102836732A (en) * | 2012-09-14 | 2012-12-26 | 天津大学 | SiOC porous ceramics-loaded La0.9Sr0.1CoO3 nano particle catalyst prepared by fibre template method |
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| CN1191127C (en) * | 2002-04-26 | 2005-03-02 | 中国石油化工股份有限公司 | Method of loading automobile tail gas purifying catalyst onto honeycomb carrier |
| CN101053838A (en) * | 2007-05-23 | 2007-10-17 | 中国科学院山西煤炭化学研究所 | Cordierite-base copper oxide/ gamma-aluminium oxide catalyst used for flue gas denitration and preparation method and application |
| CN101982234B (en) * | 2010-09-16 | 2012-09-05 | 中国石油天然气集团公司 | Three-dimensionally ordered macroporous gold-loaded catalyst for catalytic combustion with composite oxide as carrier |
| CN101992089B (en) * | 2010-10-29 | 2012-08-08 | 中国石油大学(北京) | Three-dimensional ordered porous-mesoporous iron-based perovskite oxide catalyst and preparation method thereof |
| JP5818244B2 (en) * | 2011-03-25 | 2015-11-18 | 国立研究開発法人物質・材料研究機構 | Metal catalyst structure and method for producing the same |
| CN102794175B (en) * | 2012-08-30 | 2014-07-30 | 北京工业大学 | Thermal-stability three-dimensional ordered macro-porous carbon smoke combustion catalyst and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101612575A (en) * | 2009-07-10 | 2009-12-30 | 天津大学 | Fe 2O 3And V 2O 5The use for diesel engine Catalysts and its preparation method of double activity component |
| CN102125855A (en) * | 2010-12-29 | 2011-07-20 | 天津大学 | SiOC porous ceramic supported La0.9K0.1CoO3 nano particle catalyst and preparation method |
| CN102836732A (en) * | 2012-09-14 | 2012-12-26 | 天津大学 | SiOC porous ceramics-loaded La0.9Sr0.1CoO3 nano particle catalyst prepared by fibre template method |
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| CN105032458B (en) | 2017-06-06 |
| CN105032456B (en) | 2018-06-26 |
| CN105032458A (en) | 2015-11-11 |
| CN105032456A (en) | 2015-11-11 |
| CN103433063A (en) | 2013-12-11 |
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