CN104148102A - Compound photocatalyst used for purification of volatile organic waste gas, and preparation method thereof - Google Patents
Compound photocatalyst used for purification of volatile organic waste gas, and preparation method thereof Download PDFInfo
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- CN104148102A CN104148102A CN201410433175.1A CN201410433175A CN104148102A CN 104148102 A CN104148102 A CN 104148102A CN 201410433175 A CN201410433175 A CN 201410433175A CN 104148102 A CN104148102 A CN 104148102A
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- ceramic carrier
- honeycomb ceramic
- preparation
- volatile organic
- tio
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- 239000007789 gas Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000010815 organic waste Substances 0.000 title claims abstract description 17
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 10
- 238000000746 purification Methods 0.000 title claims abstract description 8
- 150000001875 compounds Chemical class 0.000 title abstract 3
- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 19
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims description 28
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 22
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 230000000593 degrading effect Effects 0.000 abstract description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract 4
- 239000000377 silicon dioxide Substances 0.000 abstract 4
- 229910003191 Nb-TiO2 Inorganic materials 0.000 abstract 3
- 229910052681 coesite Inorganic materials 0.000 abstract 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract 3
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 abstract 3
- 229910052682 stishovite Inorganic materials 0.000 abstract 3
- 229910052905 tridymite Inorganic materials 0.000 abstract 3
- 229910019660 Nb(OH)5 Inorganic materials 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000011368 organic material Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 3
- 238000007084 catalytic combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 206010064571 Gene mutation Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Abstract
The invention relates to a compound photocatalyst used for purification of a volatile organic waste gas, and a preparation method thereof. The compound photocatalyst is composed of a cordierite honeycomb ceramic carrier and Nb-TiO2, SmVO4, C3N4, Nb2O5, Ag2O and SiO2. A total load of Nb-TiO2, SmVO4, C3N4, Nb2O5, Ag2O and SiO2 is 20-100 g/L of the cordierite honeycomb ceramic carrier. A target product is obtained by the steps of coating the surface of the cordierite honeycomb ceramic carrier uniformly with Nb-TiO2, SmVO4, C3N4, Nb(OH)5, AgOH (in terms of Ag2O), silica (in terms of SiO2) according to a mass ratio of 50: 30: 8: 1.9: 0.1: 10; blowing redundant slurry in pores of the cordierite honeycomb ceramic carrier by using a high-pressure gas; drying at a temperature of 110 DEG C; and roasting at a temperature of 500 DEG C. The photocatalyst has high performance for degrading volatile organic materials, and is simple in preparation process.
Description
Technical field
The present invention relates to a kind of composite photo-catalyst for purification of volatile organic waste gas and preparation method thereof, belong to the environmental catalysis Material Field of atmospheric environment protection.
Background technology
Volatile organic matter be cause atmosphere pollution mainly contain one of pest, also be to cause photochemical pollution, form the main source of fine particle (PM2.5), cause the abnormal (J.J.Spivey of mankind's central nervous system, respiratory system, immune system, reproductive system etc., Ind.Eng.Chem Res 1987,26:2165-2180), cause acute and slow poisoning, carcinogenic and gene mutation etc.Although catalytic combustion is widely used in the purification of volatile organic waste gas, the operating temperature of catalytic combustion is generally more than 300 DEG C.Because catalytic combustion technology temperature is higher, be not suitable for the volatile organic waste gas of low concentration, the processing of indoor low concentration volatile organic matter.Because photochemical catalyst is at room temperature worked, therefore there is unique advantage in processing low concentration volatile organic matter field.But the key of the photocatalysis equipment of volatile organic waste gas is photochemical catalyst.
At present, photochemical catalyst research field is mainly the degraded of organic wastewater, relatively less in volatile organic waste gas process field, and catalyst is mainly also fine catalyst.But fine catalyst cannot be used for the processing of volatile organic waste gas, catalyst must load for this reason.Chinese invention patent CN 103100368A discloses the preparation method of the integral catalyzer of a kind of VOCs of degraded, prepares TiO by sol-gel process
2when photochemical catalyst, with Pd to its modification, then by gunite by Pd-TiO
2load to porous ceramic surface, obtain catalyst.Chinese invention patent CN 1887416A discloses foamed nickel supported modified Nano TiO
2preparation method, catalyst is for degradation of formaldehyde and volatile organic matter.But, preparation method's more complicated of this catalyst.Therefore, how improving catalyst performance and simplify catalyst preparation process, is the emphasis of this area research.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of composite photo-catalyst for purification of volatile organic waste gas and preparation method thereof, and for solving this technical problem, the technical solution used in the present invention is:
For a composite photo-catalyst for purification of volatile organic waste gas, by cordierite honeycomb ceramic carrier and Nb-TiO
2, SmVO
4, C
3n
4, Nb
2o
5, Ag
2o, SiO
2composition, Nb-TiO
2, SmVO
4, C
3n
4, Nb
2o
5, Ag
2o and SiO
2total load amount is 20～100g/L of cordierite honeycomb ceramic carrier.
Composite photo-catalyst of the present invention is by Nb-TiO
2, SmVO
4, C
3n
4, Nb (OH)
5(with Nb
2o
5meter), AgOH is (with Ag
2o meter), Ludox is (with SiO
2meter) be 50:30:8:1.9:0.1:10 in mass ratio, be evenly coated in cordierite honeycomb ceramic carrier surface, and blow out slurries unnecessary in honeycomb ceramic carrier hole with gases at high pressure, be dried 500 DEG C of roastings through 110 DEG C.
Described Nb-TiO
2preparation method be according to mol ratio Ti:Nb=97:3, take corresponding TiO
2and Nb (OH)
5, mixed grinding is after 4 hours, 500 DEG C of air atmosphere roastings 4 hours.
The catalyst that adopts preparation method of the present invention to make has higher photocatalytic activity, and the light-concentration volatile organic exhaust gas of effectively degrading, can be used for indoor air purification.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is made further and being illustrated, but the present invention is not limited to these embodiment.
Embodiment 1
(1) Nb-TiO
2preparation: according to mol ratio Ti:Nb=97:3, take corresponding TiO
2and Nb (OH)
5, mixed grinding is after 4 hours, 500 DEG C of air atmosphere roastings 4 hours.
(2) cordierite honeycomb ceramic carrier surface active composition load: according to Nb-TiO
2, SmVO
4, C
3n
4, Nb (OH)
5(with Nb
2o
5meter), AgOH is (with Ag
2o meter), Ludox is (with SiO
2meter) mass ratio be 50:30:8:1.9:0.1:10; Take respectively Nb-TiO
2500g, SmVO
4300g, C
3n
480g, Nb (OH)
5(with Nb
2o
5meter) 19g, AgOH be (with Ag
2o meter) 1g, Ludox be (with SiO
2meter) 100g, add water to gross mass and be after 2000g ball milling 4 hours, then add red fuming nitric acid (RFNA) acidity is adjusted to pH=5.5.By cordierite honeycomb ceramic carrier (300 orders/in
2) flood, and blow out slurries unnecessary in cordierite honeycomb ceramic carrier hole with gases at high pressure.Then through 110 DEG C dry, 500 DEG C of roastings 4 hours.The content of catalyst floating coat is 100g/L (coating weight with 500 DEG C of roastings after 4 hours calculates).
(3) catalyst activity evaluation is carried out in photo catalysis reactor, and catalyst is 100mm (length), 35mm (wide), 5mm (height), and catalyst surface irradiates with a ultraviolet lamp tube, and ultraviolet ray intensity is 20mw/cm
2.Air carries benzene or ethyl acetate is that (concentration of benzene is 30mg/m to simulation volatile organic waste gas
3, or the concentration of ethyl acetate is 40mg/m
3) by catalyst, air mass flow is 100ml/min.Before and after reaction, volatile organic matter concentration adopts gas-chromatography (FID) analysis.The one way elimination factor of volatile organic waste gas is in table 1.
Embodiment 2
(1) Nb-TiO
2preparation method identical with embodiment 1.
(2) cordierite honeycomb ceramic carrier surface active composition load: according to Nb-TiO
2, SmVO
4, C
3n
4, Nb (OH)
5(with Nb
2o
5meter), AgOH is (with Ag
2o meter), Ludox is (with SiO
2meter) mass ratio be 50:30:8:1.9:0.1:10; Take respectively Nb-TiO
2500g, SmVO
4300g, C
3n
480g, Nb (OH)
5(with Nb
2o
5meter) 19g, AgOH be (with Ag
2o meter) 1g, Ludox be (with SiO
2meter) 100g, add water to gross mass and be after 4000g ball milling 4 hours, then add red fuming nitric acid (RFNA) acidity is adjusted to pH=5.5.By cordierite honeycomb ceramic carrier (300 orders/in
2) flood, and blow out slurries unnecessary in cordierite honeycomb ceramic carrier hole with gases at high pressure.Then through 110 DEG C dry, 500 DEG C of roastings 4 hours.The content of catalyst floating coat is 50g/L (coating weight with 500 DEG C of roastings after 4 hours calculates).
(3) catalyst performance method of testing is identical with embodiment 1, and the one way elimination factor of volatile organic waste gas is in table 1.
Embodiment 3
(1) Nb-TiO
2preparation method identical with embodiment 1.
(4) cordierite honeycomb ceramic carrier surface active composition load: according to Nb-TiO
2, SmVO
4, C
3n
4, Nb (OH)
5(with Nb
2o
5meter), AgOH is (with Ag
2o meter), Ludox is (with SiO
2meter) mass ratio be 50:30:8:1.9:0.1:10; Take respectively Nb-TiO
2500g, SmVO
4300g, C
3n
480g, Nb (OH)
5(with Nb
2o
5meter) 19g, AgOH be (with Ag
2o meter) 1g, Ludox be (with SiO
2meter) 100g, add water to gross mass and be after 10000g ball milling 4 hours, then add red fuming nitric acid (RFNA) acidity is adjusted to pH=5.5.By cordierite honeycomb ceramic carrier (300 orders/in
2) flood, and blow out slurries unnecessary in cordierite honeycomb ceramic carrier hole with gases at high pressure.Then through 110 DEG C dry, 500 DEG C of roastings 4 hours.The content of catalyst floating coat is 20g/L (coating weight with 500 DEG C of roastings after 4 hours calculates).
(5) catalyst performance method of testing is identical with embodiment 1, and the one way elimination factor of volatile organic waste gas is in table 1.
The one way elimination factor of the volatile organic waste gas of table 1 embodiment catalyst
As can be seen here, photochemical catalyst of the present invention is for the catalyticing purifying effect of volatile organic matter, and as can be seen from Table 1, along with the increase of load capacity, the performance of catalyst improves.This catalyst has the features such as preparation technology is simple, low cost of manufacture.
Claims (3)
1. for a composite photo-catalyst for purification of volatile organic waste gas, it is characterized in that: by cordierite honeycomb ceramic carrier and Nb-TiO
2, SmVO
4, C
3n
4, Nb
2o
5, Ag
2o, SiO
2composition, Nb-TiO
2, SmVO
4, C
3n
4, Nb
2o
5, Ag
2o and SiO
2total load amount is 20～100g/L of cordierite honeycomb ceramic carrier.
2. the preparation method of catalyst described in claim 1, is characterized in that: by Nb-TiO
2, SmVO
4, C
3n
4, with Nb
2o
5the Nb (OH) calculating
5, with Ag
2o calculate AgOH, with SiO
2the mass ratio of Ludox calculating is 50:30:8:1.9:0.1:10, is evenly coated in cordierite honeycomb ceramic carrier surface, and blows out slurries unnecessary in honeycomb ceramic carrier hole with gases at high pressure, through 110 DEG C dry, 500 DEG C of roastings make end product.
3. preparation method claimed in claim 2, is characterized in that: described Nb-TiO
2preparation method be according to mol ratio Ti:Nb=97:3, take corresponding TiO
2and Nb (OH)
5, mixed grinding is after 4 hours, 500 DEG C of air atmosphere roastings 4 hours.
Priority Applications (1)
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|---|---|---|---|
| CN201410433175.1A CN104148102B (en) | 2014-08-28 | 2014-08-28 | A kind of composite photo-catalyst for purification of volatile organic waste gas and its preparation method |
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|---|---|---|---|
| CN201410433175.1A CN104148102B (en) | 2014-08-28 | 2014-08-28 | A kind of composite photo-catalyst for purification of volatile organic waste gas and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104148102A true CN104148102A (en) | 2014-11-19 |
| CN104148102B CN104148102B (en) | 2016-06-01 |
Family
ID=51873842
Family Applications (1)
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549210A (en) * | 2014-12-22 | 2015-04-29 | 湖北盟科纸业有限公司 | Photocatalytic reagent and application on aluminized paper |
| CN105195203A (en) * | 2015-10-22 | 2015-12-30 | 江苏大学 | Preparation method and application of visible light response Nb2O5/g-C3N4 heterojunction material |
| CN105195221A (en) * | 2015-07-06 | 2015-12-30 | 阜阳师范学院 | Composite photocatalyst SiO2/g-C3N4 as well as preparation method and application thereof |
| CN111250134A (en) * | 2020-02-14 | 2020-06-09 | 郑州普利飞尔环保科技有限公司 | Modified TiO2Composite g-C3N4Visible light photocatalytic antibacterial ceramic and preparation method and application thereof |
| CN114011399A (en) * | 2021-11-08 | 2022-02-08 | 江苏理工学院 | Niobium compound photocatalyst and preparation method and application thereof |
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| CN114011399A (en) * | 2021-11-08 | 2022-02-08 | 江苏理工学院 | Niobium compound photocatalyst and preparation method and application thereof |
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|---|---|
| CN104148102B (en) | 2016-06-01 |
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