CN103801154B - Catalytic filtering material with TiO2 thin film protective layer and preparation method for catalytic filtering material - Google Patents

Catalytic filtering material with TiO2 thin film protective layer and preparation method for catalytic filtering material Download PDF

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CN103801154B
CN103801154B CN201410073295.5A CN201410073295A CN103801154B CN 103801154 B CN103801154 B CN 103801154B CN 201410073295 A CN201410073295 A CN 201410073295A CN 103801154 B CN103801154 B CN 103801154B
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filtrate
tio
oxidation catalyst
catalyst
filter
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CN103801154A (en
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郑玉婴
汪谢
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福州大学
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • B01D53/8628Processes characterised by a specific catalyst
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063Titanium; Oxides or hydroxides thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/32Manganese, technetium or rhenium
    • B01J23/34Manganese
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02Impregnation, coating or precipitation
    • B01J37/03Precipitation; Co-precipitation
    • B01J37/036Precipitation; Co-precipitation to form a gel or a cogel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
    • B01J37/341Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
    • B01J37/343Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20707Titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/2073Manganese
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The invention provides a catalytic filtering material with a TiO2 thin film protective layer and a preparation method for the catalytic filtering material. The preparation method comprises the following steps of loading a denitration catalyst on a filtering material serving as a substrate by using an ultrasonic method, and wrapping the surface of the filtering material with a layer of TiO2 by using a sol-gel method to prepare the catalytic filtering material with the TiO2 thin film protective layer. According to the catalytic filtering material and the preparation method, the problem of high falling rate of the denitration catalyst in a using process is solved by the TiO2 thin film protective layer; TiO2 has a great number of acid sites, so that the denitration efficiency of the catalyst can be greatly improved, and the loading capacity of the catalyst is reduced; in addition, the condition that the service life of a polyphenylene sulfide needled mat filtering material is shortened by the abrasion of particles in flue gas can also be avoided by the TiO2 thin film protective layer; the catalytic filtering material with the TiO2 thin film protective layer is high in economy and practicability.

Description

There is TiO 2oxidation catalyst filter filtrate of thinfilm protective coating and preparation method thereof

Technical field

The invention belongs to filtration art, be related specifically to one and there is TiO 2oxidation catalyst filter filtrate of thinfilm protective coating and preparation method thereof.

Background technology

Environmental pollution is the positive urgent need to solve the problem of each developing country.China is a coal-fired big country, discharges a large amount of pollutants in burning of coal process.According to relevant statistics, in air pollutants 87% SO 2, the NO of 67% x, the CO of 71% and the flue dust of 60% derive from burning of coal.And in various coal combustion equipment, the flue dust of station boiler discharge accounts for more than 40%, nitrogen oxide emission accounts for more than 36.1% of national total release, and along with the development of fossil-fired unit, their ratio is in the trend increased year by year.Along with the enhancing of our expanding economy and people's environmental consciousness, the pollution problem of discharged from coal-fired boiler is more and more concerned.

At present, industrial mainly to settle sack cleaner to filter dust in flue gas, being wherein most widely used of polyphenylene sulfide Nomex.Flue dust dust content after it filters is general all lower than 30mg/Nm 3, have even at 10mg/Nm 3below, and sack cleaner can also effectively trap the maximum superfine granule (i.e. respirable dust) of less than 2.5 μm of harm.

But, but also there is no effective control method as the nitrogen oxide of one of toxic gas in flue gas.NO xnot only be detrimental to health, but also be the major reason forming acid rain and photochemical fog.Current China is also very undesirable for the control effects of nitrogen oxide.Work out effective NO xcontrol technology, develop applicable China's actual conditions and the denitration technology having an independent intellectual property right becomes particularly important.In numerous denitride technologies, SCR (SCR) is nitric efficiency denitride technology that is the highest, maturation the most.SCR method is under special catalyst effect, with ammonia or other reducing agent optionally by NO xbe reduced to N 2and H 2the method of O.Because it has high efficiency and practicality, now become the study hotspot in denitrogenation field.

Abroad, someone proposes the concept of oxidation catalyst filter very early, namely prepares a kind of material with dedusting simultaneously and denitration, so not only can reduce the complexity of plant tail gas cleaning system, also can save place and reduce treatment cost etc.Al 2o 3porous ceramic filter is a kind of common catalytic filter material, but this filtering material serviceability temperature high (>300 DEG C), filter efficiency is low, is difficult to promote in practice.Although there be the not report of major general's low-temperature denitration catalyst load on Nomex filtrate in recent years, mostly have catalyst loadings large, the difficult problem such as easily come off, and prospects for commercial application is not very bright and clear.Therefore, prepare efficiently, the oxidation catalyst filter filtrate with larger prospects for commercial application becomes the focus of numerous researcher concern, is also industrial difficult point.Successfully develop a kind of like this oxidation catalyst filter filtrate and will bring huge economic benefit.

Summary of the invention

One is the object of the present invention is to provide to have TiO 2oxidation catalyst filter filtrate of thinfilm protective coating and preparation method thereof.Disclosed by the invention have TiO 2the oxidation catalyst filter filtrate of thinfilm protective coating possesses the function of dedusting and denitration simultaneously, has stronger economy and practicality.

For achieving the above object, the present invention adopts following technical scheme:

One has TiO 2the preparation method of the oxidation catalyst filter filtrate of thinfilm protective coating is: take filtrate as matrix, by ultrasonic method denitration catalyst-supported on filtrate, then wraps up one deck TiO through sol-gal process at filter material surface 2, obtained have TiO 2the oxidation catalyst filter filtrate of thinfilm protective coating.

Described filtrate is polyphenylene sulfide Nomex filtrate, and be take polyphenylene sulfide fibre as raw material, be prepared from through shredding, compound batch mixing, combing, lapping, acupuncture, thermal finalization and press polish of singing, average pore size is 37 μm.

Described denitrating catalyst is through the obtained amorphous nanometer MnO of liquid-phase coprecipitation 2particle.

On filtrate, the weight of denitration catalyst-supported accounts for the 4wt% ~ 10wt% of filtrate weight.

There is TiO 2the preparation method of the oxidation catalyst filter filtrate of thinfilm protective coating, specifically comprises the following steps:

(1) amorphous nanometer MnO is obtained by liquid-phase coprecipitation 2catalyst, is ground to Powdered, sieving for standby;

(2) by MnO 2particle adds in ethanol, ultrasonic disperse 0.5 ~ 12h, forms uniform aaerosol solution;

(3) polyphenylene sulfide Nomex filtrate (as shown in Figure 1) is immersed in the aaerosol solution of step (2), continue ultrasonic 0.5 ~ 12h, make MnO 2catalyst is evenly attached to polyphenylene sulfide Nomex filter material surface (as shown in Figure 2); Then filtrate is taken out, obtain oxidation catalyst filter filtrate 80 ~ 180 DEG C of dryings; To press before and after the load of polyphenylene sulfide Nomex filtrate of poor quality calculates divided by original quality for the load capacity of catalyst, controls by the concentration changing aaerosol solution;

(4) butyl titanate is dissolved in ethanol, be mixed with the solution of 0.07 ~ 0.15mol/L, oxidation catalyst filter filtrate obtained in step (3) is immersed 0.5 ~ 12h in this solution, fully adsorb after butyl titanate solution until filter material surface, taken out, drying at room temperature 0.5 ~ 12h, be finally immersed in the water make butyl titanate be hydrolyzed polycondensation formed TiO 2film;

(5) repeat step (4), make every root fiber surface in filtrate deposit one deck TiO 2film (as shown in Figure 3 and Figure 4); TiO 2the thickness of film controls by the concentration of butyl titanate ethanolic solution and the number of operations of immersion absorption-hydrolytie polycondensation;

What a kind of preparation method as above obtained has TiO 2the oxidation catalyst filter filtrate of thinfilm protective coating, effectively can remove the dust in industrial tail gas and nitrogen oxide, and when the load capacity of catalyst is no more than 10%, denitration rate can reach more than 90%.

Beneficial effect of the present invention is:

1. the present invention is by filter material surface denitration catalyst-supported, makes it possess the function of dedusting and denitration simultaneously; Make originally complicated industrial post processing mode become simple, save space, place and processing cost greatly;

2. preparation method provided by the invention is simple, is sent out wrap up one deck TiO at filter material surface by collosol and gel 2thinfilm protective coating, not only solves denitrating catalyst and in use holds a caducous difficult problem, and due to TiO 2there is a large amount of sour sites, can greatly improve the denitration efficiency of catalyst, reduce the load capacity of catalyst.In addition, this TiO 2thinfilm protective coating also can protect PPS filtrate to reduce its service life from the wearing and tearing of particle in flue gas.

Accompanying drawing explanation

The SEM figure of original polyphenylene sulfide Nomex filtrate in Fig. 1 embodiment 3;

Load nanometer MnO in Fig. 2 embodiment 3 2the SEM figure of the oxidation catalyst filter filtrate of catalyst;

In Fig. 3 embodiment 3, there is TiO 2the SEM figure of the oxidation catalyst filter filtrate of thinfilm protective coating;

TiO in Fig. 4 embodiment 3 2the surface-element constituent analysis of the oxidation catalyst filter filtrate of parcel;

In the test of Fig. 5 catalyst activity, self-control tubular type SCR reactor assembly figure; In figure, 1 is vapour source; 2 is pressure-reducing valve; 3 is mass flowmenter; 4 is blender; 5 is air preheater; 6 is catalytic bed; 7 is test filtrate; 8 is flue gas analyzer.

Detailed description of the invention

The present invention's the following example further illustrates the present invention, but protection scope of the present invention is not limited to the following example.

Polyphenylene sulfide (PPS) Nomex filtrate in the following example prepares by the following method: take polyphenylene sulfide fibre as raw material, prepare Nomex filtrate through shredding, compound batch mixing, combing, lapping, acupuncture, thermal finalization and press polish of singing.

Amorphous MnO 2catalyst is obtained by laxative remedy, first configures three kinds of solution:

Solution 1: take 0.03mol manganese acetate and be dissolved in 150mL distilled water;

Solution 2: take 1g polyethylene glycol and be dissolved in 50mL distilled water;

Solution 3: take 0.02mol potassium permanganate and be dissolved in 100mL distilled water;

Dropwise be added drop-wise to by solution 2 in solution 1, fully stir simultaneously, and then add solution 3, vigorous stirring 6h, filter, collect the solid on filter paper, with distilled water lotion 4 times, suction filtration, in vacuum drying chamber, 110 DEG C of dry 6h, can obtain MnO xparticle, through pulverizing, grinding and sieve, makes 100 object particles.

embodiment 1

The amorphous MnO obtained by 0.2g 2catalyst is added in the ethanol of 20mL, ultrasonic disperse 1h, and forming concentration is the MnO of 10mg/mL 2then diameter is that the circular PPS filtrate of 3.8cm immerses in above-mentioned suspension by suspension, after continuing ultrasonic 1h, takes out at 110 DEG C dry.Must the catalyst loadings of this oxidation catalyst filter filtrate be 7% as calculated.Immersed in 0.07mol/L butyl titanate ethanolic solution by this oxidation catalyst filter filtrate, drying at room temperature 1h after standing adsorption 1h, is finally immersed in deionized water and is fully hydrolyzed 0.5h again, makes the butyl titanate polycondensation being adsorbed on filter material surface form TiO 2gel layer.Repeat above-mentioned immersion absorption-hydrolytie polycondensation to operate and make for 4 times the every root fiber surface in filtrate deposit the thin TiO of one deck 2protective layer.

The denitration performance of this oxidation catalyst filter filtrate carries out evaluation (see figure 5) in self-control tubular type SCR reactor.NO and NH 3volume fraction is 0.05 %, O 2volume fraction is 5 %, and all the other are N 2, gas flow rate is 700mLmin -1, temperature is set to 160 DEG C, and recording denitration rate with Britain's KM940 flue gas analyzer is 90%.

embodiment 2

The amorphous MnO obtained by 0.1g 2catalyst adds in the ethanol of 10mL, ultrasonic disperse 0.5h, and forming concentration is the MnO of 10mg/mL 2suspension, then by diameter be 3.8cm circular PPS filtrate immerse in above-mentioned suspension, after continuing ultrasonic 2h, to take out at 90 DEG C dry.Must the catalyst loadings of this oxidation catalyst filter filtrate be 7% as calculated.Immersed in 0.07mol/L butyl titanate ethanolic solution by this oxidation catalyst filter filtrate, drying at room temperature 0.5h after standing adsorption 0.5h, is finally immersed in deionized water and is fully hydrolyzed 20min again, makes the butyl titanate polycondensation being adsorbed on filter material surface form TiO 2gel layer.Repeat the TiO that above-mentioned immersion absorption-hydrolytie polycondensation operates the every root fiber surface deposition thick layer made for 6 times in filtrate 2protective layer.

The denitration performance of this oxidation catalyst filter filtrate carries out evaluation (see figure 5) in self-control tubular type SCR reactor.NO and NH 3volume fraction is 0.05 %, O 2volume fraction is 5 %, and all the other are N 2, gas flow rate is 700mLmin -1, temperature is set to 160 DEG C, and recording denitration rate with Britain's KM940 flue gas analyzer is 92%.

embodiment 3

The amorphous MnO obtained by 0.3g 2catalyst adds in the ethanol of 20mL, ultrasonic disperse 1h, and forming concentration is the MnO of 15mg/mL 2suspension, then by diameter be 3.8cm circular PPS filtrate immerse above-mentioned suspension molten in, after continuing ultrasonic 1h, to take out at 110 DEG C dry.Must the catalyst loadings of this oxidation catalyst filter filtrate be 9.6% as calculated.Immersed in 0.15mol/L butyl titanate ethanolic solution by this oxidation catalyst filter filtrate, drying at room temperature 1h after standing adsorption 1h, is finally immersed in deionized water and is fully hydrolyzed 0.5h again, makes the butyl titanate polycondensation being adsorbed on filter material surface form TiO 2gel layer.Repeat the TiO that above-mentioned immersion absorption-hydrolytie polycondensation operates the every root fiber surface deposition thick layer made for 3 times in filtrate 2protective layer.

The denitration performance of this oxidation catalyst filter filtrate carries out evaluation (see figure 5) in self-control tubular type SCR reactor.NO and NH 3volume fraction is 0.05 %, O 2volume fraction is 5 %, and all the other are N 2, gas flow rate is 700mLmin -1, temperature is set to 160 DEG C, and recording denitration rate with Britain's KM940 flue gas analyzer is 96%.

Comparison diagram 1, Fig. 2 can find, in Fig. 2, polyphenylene sulfide Nomex filter material surface obviously adheres to a lot of nano particle, shows MnO 2catalyst success load is at filter material surface; Comparison diagram 2 and Fig. 3 can find, in Fig. 3, filter material surface has film wrapped, and TiO is described 2successfully be wrapped in filter material surface; In order to verify this conclusion further, obtained for the present embodiment is had TiO by us 2the oxidation catalyst filter filtrate of thinfilm protective coating has done surface-element analysis, and analysis result is: C:66.10 wt%, O:4.92 wt%, S:26.52 wt%, Ti:1.8 wt%, Mn:0.66 wt%; This result further demonstrate that filter material surface has MnO 2and TiO 2.

We are to oxidation catalyst filter filtrate parcel TiO in an experiment 2denitration performance before and after film compares, and finds that oxidation catalyst filter filtrate is at parcel TiO 2after film, denitration rate does not wrap up TiO 2improve greatly before.This is mainly because relative to simple nanometer MnO 2catalyst granules, the TiO of increase 2film can provide more sour site absorbing ammonia, thus accelerates the reduction of NO.It should be noted that denitration rate and the TiO of this oxidation catalyst filter filtrate 2it doesn't matter for the thickness of film, increases TiO 2the thickness of film can not improve the denitration rate of filtrate, but thinner TiO 2film can not make again fiber filtering be wrapped by (TiO completely 2the thickness of protective layer controls by the concentration of butyl titanate ethanolic solution and the number of operations of immersion absorption-hydrolytie polycondensation).This has illustrated main matter or the MnO of catalytic action 2catalyst, TiO 2the effect of film is parcel catalyst, prevents it from coming off, and provides more sour site absorbing ammonia, so that MnO 2catalyzed conversion NO.The load capacity of catalyst is larger, and denitration rate is higher, but too high load capacity is disadvantageous to commercial Application.Therefore, need control operation condition to obtain when lower load capacity, obtain comparatively suitable denitration rate.We experimental studies have found that best preparation condition is the MnO of load on filtrate 2weight account for 7% of filtrate weight, the concentration of butyl titanate ethanolic solution is 0.07mol/L, and repeated impregnations-hydrolysis number of times is 4 times, and the oxidation catalyst filter filtrate denitration rate of acquisition can reach 90%.

The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (6)

1. one kind has TiO 2the preparation method of the oxidation catalyst filter filtrate of thinfilm protective coating, is characterized in that: take filtrate as matrix, by ultrasonic method denitration catalyst-supported on filtrate, then wraps up one deck TiO through sol-gal process at filter material surface 2film, obtained have TiO 2the oxidation catalyst filter filtrate of thinfilm protective coating; Described denitrating catalyst is amorphous manganese dioxide.
2. according to claim 1 have TiO 2the preparation method of the oxidation catalyst filter filtrate of thinfilm protective coating; it is characterized in that: described filtrate is polyphenylene sulfide Nomex filtrate; be take polyphenylene sulfide fibre as raw material, be prepared from through shredding, compound batch mixing, combing, lapping, acupuncture, thermal finalization and press polish of singing.
3. according to claim 1 have TiO 2the preparation method of the oxidation catalyst filter filtrate of thinfilm protective coating, is characterized in that: described denitrating catalyst is through the obtained amorphous nanometer MnO of liquid-phase coprecipitation 2particle.
4. according to claim 1 have TiO 2the preparation method of the oxidation catalyst filter filtrate of thinfilm protective coating, is characterized in that: on filtrate, the weight of denitration catalyst-supported accounts for the 4wt% ~ 10wt% of filtrate weight.
5. according to claim 1 have TiO 2the preparation method of the oxidation catalyst filter filtrate of thinfilm protective coating, is characterized in that: comprise the following steps:
(1) amorphous nanometer MnO is obtained by liquid-phase coprecipitation 2catalyst, is ground to Powdered, sieving for standby;
(2) by MnO 2particle adds in ethanol, ultrasonic disperse 0.5 ~ 12h, forms uniform aaerosol solution;
(3) polyphenylene sulfide Nomex filtrate is immersed in the aaerosol solution of step (2), continue ultrasonic 0.5 ~ 12h, make MnO 2catalyst is evenly attached to polyphenylene sulfide Nomex filter material surface; Then filtrate is taken out, obtain oxidation catalyst filter filtrate 80 ~ 180 DEG C of dryings;
(4) butyl titanate is dissolved in ethanol, be mixed with the solution of 0.07 ~ 0.15mol/L, oxidation catalyst filter filtrate obtained in step (3) is immersed 0.5 ~ 12h in this solution, fully adsorb after butyl titanate solution until filter material surface, taken out, drying at room temperature 0.5 ~ 12h, be finally immersed in the water make butyl titanate be hydrolyzed polycondensation formed TiO 2film;
(5) repeat step (4), make every root fiber surface in filtrate deposit one deck TiO 2film.
6. what a preparation method as claimed in claim 1 obtained has TiO 2the oxidation catalyst filter filtrate of thinfilm protective coating, is characterized in that: effectively can remove the dust in industrial tail gas and nitrogen oxide, and when the load capacity of catalyst is no more than 10%, denitration rate can reach more than 90%.
CN201410073295.5A 2014-03-03 2014-03-03 Catalytic filtering material with TiO2 thin film protective layer and preparation method for catalytic filtering material CN103801154B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103801154B (en) * 2014-03-03 2015-06-03 福州大学 Catalytic filtering material with TiO2 thin film protective layer and preparation method for catalytic filtering material
CN105413703A (en) * 2014-09-16 2016-03-23 中国科学院青岛生物能源与过程研究所 Denitrification catalyst, and preparation and application thereof
CN104492189B (en) * 2014-11-30 2017-01-18 成都易态科技有限公司 Integrated dust removal-denitration treatment method for industrial furnace gas and special device for integrated treatment method
CN105457646B (en) * 2015-12-16 2018-08-28 浙江天蓝环保技术股份有限公司 A kind of middle low-temperature denitration catalyst and preparation method thereof with protective layer
CN106268855A (en) * 2016-08-08 2017-01-04 西安热工研究院有限公司 A kind of low temperature NO oxidation catalyst and preparation method thereof and using method
CN106334372B (en) * 2016-09-21 2018-06-15 福州大学 The ferromanganese composite filtering material of thiophene-based conductive polymer in-stiu coating and its preparation
CN107413114A (en) * 2017-08-03 2017-12-01 福州大学 The manganese dioxide di-iron trioxide of a kind of Chitosan-coated/PPS composite denitration filtrates and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0483537A (en) * 1990-07-24 1992-03-17 Toyota Central Res & Dev Lab Inc Preparation of photocatalyst
CN1824885A (en) * 2005-02-23 2006-08-30 郑孟松 Method for making photocatalyst coating fiber containing protective film
CN102886255A (en) * 2012-06-21 2013-01-23 华北电力大学 MnO2-TiO2-carbon nano tube porous inorganic ceramic membrane low-temperature denitration catalyst and preparation method thereof
US8404202B2 (en) * 2009-06-23 2013-03-26 Ford Global Technologies, Llc Urea-resistant catalytic units and methods of using the same
CN103191603A (en) * 2013-04-09 2013-07-10 福州大学 Catalytic filtration material with denitration and dust removal functions and preparation method of catalytic filtration material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1805268A2 (en) * 2004-09-14 2007-07-11 Millennium Chemicals, Inc. Composition useful for providing nox removing coating on material surface
CN102120116A (en) * 2011-02-24 2011-07-13 福州大学 Denitration catalyst-supported compound filter material and preparation method thereof
CN102512878B (en) * 2011-12-28 2013-10-09 南京际华三五二一特种装备有限公司 Dust removal and waste gas decomposition double-effect filter material and preparation method thereof
CN103801154B (en) * 2014-03-03 2015-06-03 福州大学 Catalytic filtering material with TiO2 thin film protective layer and preparation method for catalytic filtering material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0483537A (en) * 1990-07-24 1992-03-17 Toyota Central Res & Dev Lab Inc Preparation of photocatalyst
CN1824885A (en) * 2005-02-23 2006-08-30 郑孟松 Method for making photocatalyst coating fiber containing protective film
US8404202B2 (en) * 2009-06-23 2013-03-26 Ford Global Technologies, Llc Urea-resistant catalytic units and methods of using the same
CN102886255A (en) * 2012-06-21 2013-01-23 华北电力大学 MnO2-TiO2-carbon nano tube porous inorganic ceramic membrane low-temperature denitration catalyst and preparation method thereof
CN103191603A (en) * 2013-04-09 2013-07-10 福州大学 Catalytic filtration material with denitration and dust removal functions and preparation method of catalytic filtration material

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