CN104971765A - Catalyst and method for decomposing volatile organic compounds - Google Patents
Catalyst and method for decomposing volatile organic compounds Download PDFInfo
- Publication number
- CN104971765A CN104971765A CN201510361976.6A CN201510361976A CN104971765A CN 104971765 A CN104971765 A CN 104971765A CN 201510361976 A CN201510361976 A CN 201510361976A CN 104971765 A CN104971765 A CN 104971765A
- Authority
- CN
- China
- Prior art keywords
- volatile organic
- catalyst
- gas
- organic matter
- decomposing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention provides a catalyst for decomposing volatile organic compounds. The catalyst comprises a mesoporous material, which has a pore diameter of 2-50 nm and a specific surface area of 600-1000 m2/g; silver loaded on the mesoporous material, and a transition metal oxide loaded on the mesoporous material; wherein the transition metal oxide is composed of cerium oxide and manganese oxide and accounts for 1 to 30 wt% of the total weight of the catalyst, and the particle size of silver and transition metal oxide is in a range of 2 to 50 nm. The invention further provides a method for decomposing volatile organic compounds.
Description
The application is the applying date is on December 21st, 2009, application number is 200910261911.9, and denomination of invention is the divisional application of the application for a patent for invention of " catalyst of decomposing volatile organic matters and method ".
Technical field
The present invention relates to a kind of catalyst, particularly relates to a kind of catalyst and method of decomposing volatile organic matters.
Background technology
Air pollution serious harm health and environment.For the harm of decreasing pollution thing, European Union sets the reduction targets of the year two thousand twenty: such as SO
2, NOx, VOCs, ammonia, PM2.5 comparatively should reduce 82%, 60%, 51%, 27%, 59% in 2000 respectively.Imposing empty dirty expense is one of the pollutant decrement strategy in Taiwan.Based on the harmfulness of VOCs, Environmental Protection Administration levied the empty dirty expense of VOCs from 2006, and planned to start to improve rate in 2010, and estimation will bring up to 25 ~ 30 yuan from script per kilogram 12 yuan.
According to statistics in 2003, Taiwan was discharged into volatile organic matter (VolatileOrganic Compounds, VOCs) in air every year more than 864,000 tonne.Research is pointed out, with incinerate method process low concentration Wind Volume VOCs difficulty, the CO of the consumption energy and derivative discharge
2all high.Therefore, existing many energy-saving design are developed at present, and such as, semiconductor dealer is most with hydrophobic zeolite runner Adsorption Concentration VOCs, afterwards little air quantity high concentration VOCs is carried out direct high temperature incineration process or heat accumulation type incineration process.But, even if select heat accumulation type incineration still to need to use fuel.According to TSIA statistics, the gas use amount about 26,530,000m of ten large semiconductor dealers before current Taiwan
3in/year, expense about 3.9 hundred million yuan/year is (with 14.65 yuan/m
3calculate), CO2 emissions reach 55,700 tons/year.Energy-conservation and when warming up day by day high of subject under discussion, dealer is thereupon day by day urgent for the demand of the exhaust gas treatment technology of lower energy cost, low-carbon emission.
TaiWan, China patent I255324 discloses a kind of organic waste gas treatment system and method, utilizes concentration runner to adsorb and goes out concentrated organic exhaust gas with desorption, and through the direct high temperature pyrolysis of plasma flare and rapid oxidation concentrates waste gas.In addition, the heat energy preheating that more utilizes plasma flare to produce for the concentrated waste gas of air inlet process temperature and the thermal source of concentration runner desorption and regeneration is provided.
TaiWan, China patent M320434 discloses a kind of purifier of high-effect inspissator collocation high-level oxidation technology process organic exhaust gas, it arranges an advanced oxidation processing unit in the downstream of exhaust concentrator desorption handling part, with oxidation processes exhaust concentrator the organic substance that concentrates.
But no matter utilize plasma or advanced oxidation still to need to use the energy, it reduces the limited efficiency of operating cost, cannot really deal with problems.
Catalyst incinerates clear and definite economize energy characteristic and shows its VOCs treatment technology being tool potentiality.Catalyst for complete oxidation VOCs is broadly divided into two classes: the transition metal oxides such as the precious metal such as platinum or palladium and chromium, cobalt, copper, nickel and manganese.Low-temperature catalytic oxidation VOCs great potential pointed out by many patents and document.
United States Patent (USP) the 4th, 304,761 disclose the method for oxidation of methanol waste gas by silver catalyst.Silver makes methyl alcohol be converted into carbon dioxide at high proportion in relatively low reaction temperature.But platinum and palladium then produce a large amount of aldehydes accessory substances.
Summary of the invention
The object of the present invention is to provide a kind of catalyst that effectively can reduce the decomposing volatile organic matters of energy resource consumption and CO2 emissions, and use the method for this catalyst decomposes volatile organic matter
One embodiment of the present invention, provides a kind of catalyst of decomposing volatile organic matters, comprising: a Hole material; And a silver metal, support in this Hole material.
One embodiment of the present invention, catalyst of the present invention also can comprise a transition metal oxide, supports in this Hole material.
One embodiment of the present invention, provides a kind of method of decomposing volatile organic matters, comprising: provide one containing the gas of volatile organic matter; And making this gas containing volatile organic matter and above-mentioned catalyst exposure, the gas making this contain volatile organic matter decomposes and is oxidized to carbon dioxide and water.
Silver metal surface easily adsorb oxygen and there is oxidation speciality, and transition metal oxide also has adsorb oxygen and provide oxygen to promote the ability of the complete oxidation of VOCs to silver further.The present invention is based on this characteristic, designs and produces out one and supports catalyst material in Hole with silver metal and transition metal oxide, VOCs can be decomposed and be oxidized to the catalyst of carbon dioxide and water.It should be noted that the oxidation reaction under this catalyst exists can be carried out under cryogenic conditions, efficiently solve the power consumption of conventional high-temperature incineration and the problem of derivative CO2 emission.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, is described in detail below:
Accompanying drawing explanation
Fig. 1 is the XRD collection of illustrative plates of silver/SBA-15 that embodiments of the invention 1 obtain;
Fig. 2 is the acetone gas removal efficiency utilizing silver/iron oxide/SBA-15 catalyst in embodiments of the invention 4;
Fig. 3 is the isopropyl alcohol gas removal efficiency utilizing silver/cerium oxide/SBA-15 catalyst in embodiments of the invention 6.
Detailed description of the invention
One embodiment of the present invention, provides a kind of catalyst of decomposing volatile organic matters, comprises a Hole material, and a silver metal, supports in Hole material.
One embodiment of the present invention, catalyst of the present invention also comprises a transition metal oxide, supports in Hole material.
Above-mentioned Hole material can be silica, aluminium oxide or sieve and silica-sesquioxide, such as SBA-15.Hole material aperture is substantially between 2 ~ 50nm, and specific area is between 600 ~ 1,000m
2/ g.Silver metal is or/and transition metal oxide nano-particles is supported on surface and the duct of Hole material.Above-mentioned transition metal oxide can comprise chromium oxide, cobalt oxide, cerium oxide, nickel oxide, iron oxide, magnesia, manganese oxide or its combination.
The average grain diameter of silver metal is substantially between 2 ~ 50nm.The percentage by weight of silver metal in catalyst is substantially between 1 ~ 30wt%.The average grain diameter of transition metal oxide is substantially between 2 ~ 50nm.The percentage by weight of transition metal oxide in catalyst is substantially between 1 ~ 30wt%.
Catalyst of the present invention can by above-mentioned Hole material by methods such as impregnation, ion-exchange or deposition-precipitation by silver metal or/and transition metal oxide nano-particles supports in Hole material and is formed.Period (or before using) carries out a heat treatment to this catalyst, namely lasts the heat treatment process of a few hours through a temperature between 100 ~ 800 DEG C.
Catalyst of the present invention can support in a honeycomb carrier further, and the material of this honeycomb carrier can be aluminium oxide, silica, sieve and silica-sesquioxide, metal or metal oxide.
One embodiment of the present invention, provides a kind of method of decomposing volatile organic matters, comprises the following steps.First, one is provided containing the gas of volatile organic matter.Afterwards, make the gas containing volatile organic matter and above-mentioned catalyst exposure, make the gas containing volatile organic matter decompose and be oxidized to carbon dioxide and water.
The above-mentioned gas containing volatile organic matter can be engine exhaust, organic solvent volatile gas body or contaminated air, and the volatile organic matter in gas can comprise alkanes, alkene class, the fragrance same clan, ketone, ethers, alcohols, organic acid, amine or its mixture, such as be common in the isopropyl alcohol (IPA) of semiconductor and opto-electronics exhaust, acetone (acetone), propylene glycol monomethyl ether (Propylene glycol monomethyl ether, or propylene glycol monomethyl ether acetate (Propylene glycol monomethyl ether acetate PGME), PGMEA) etc.
The temperature of the above-mentioned gas and catalyst exposure that contain volatile organic matter can lower than 300 DEG C, such as 100 ~ 300 DEG C.Another containing the gas of volatile organic matter and the space velocity cardinal principle of catalyst particles contact between 3,000 ~ 200,000hr
-1.In addition, containing the space velocity of the gas of volatile organic matter and above-mentioned catalyst-loaded honeycomb carrier contact substantially between 1,000 ~ 20,000hr
-1.
Silver surface is easy to adsorb oxygen and forms oxidation catalyst.According to this characteristic, the invention provides a kind of catalyst, comprise a Hole material, support silver or/and transition metal oxide, volatile organic matter can be completely oxidized to carbon dioxide and water.Specifically, under this catalyst action, VOCs oxidation can be carried out at low temperatures, can effectively reduce energy resource consumption and CO2 emissions.
The preparation (1) of [embodiment 1] catalyst of the present invention
Utilize co-precipitation principle, in the process of preparation SBA-15, first add surfactant and form Hole template, then, add metal precursor, afterwards, add silicon source, to form the Hole silica supporting silver.
Detailed preparation method is described as follows: add surfactant P123 and red fuming nitric acid (RFNA) in deionized water for stirring to dissolving completely, its percentage by weight is 1:3:30.Then, adding weight is that the silver nitrate of 2 times, surfactant is stirred to and dissolves completely, afterwards, adding weight is that the TEOS of 2.1 times of P123 stirs 20 hours, after stirring 48 hours in 95 DEG C again, carry out 3 filtrations, water wash procedures, drying, 500 DEG C of heat treatments, after 5 hours, form the Hole silica supporting 10wt% silver.The XRD collection of illustrative plates of this silver/SBA-15 catalyst is as Fig. 1.Result shows, and is silver/SBA-15.
[embodiment 2] the present invention decomposes the effect (1) containing volatile organic matter gas
First, the acetone gas of one 1,000ppm is provided.Afterwards, under 150 ~ 300 DEG C of reaction temperatures, the silver/SBA-15 catalyst exposure of the 10wt% making acetone gas and 0.1 gram, [embodiment 1] obtained, to decompose acetone gas for carbon dioxide and water.The space velocity of acetone gas and silver/SBA-15 catalyst exposure is 10,000hr
-1.
The present embodiment decomposes the result display of acetone gas, can reach the removal efficiency of 95% in 250 DEG C.
The preparation (2) of [embodiment 3] catalyst of the present invention
Utilize deposition-precipitation support silver and iron oxide in SBA-15.
Detailed preparation method is described as follows: add surfactant P123 and be stirred in 2M hydrochloric acid and dissolve completely, its percentage by weight is 1:40.Then, afterwards, adding weight is that the TEOS of 2.1 times of P123 stirs 24 hours, then after stirring 24 hours in 90 DEG C, carries out filtering for 3 times, water wash procedures, and drying, 500 DEG C of heat treatments, after 5 hours, form Hole silica SBA-15.
Add silver nitrate and ferric nitrate and urea in deionized water for stirring to dissolving completely, its percentage by weight is 1:7:2:200.Afterwards, add the SBA-15 that weight is 1.5 times of silver nitrate, and uniform stirring.Instillation nitric acid adjusted to ph is between 2 ~ 3.Then, temperature is maintained 90 DEG C, continue stirring after 16 hours, carry out 3 filtrations, water wash procedures, drying, 500 DEG C of heat treatments, after 5 hours, form silver/iron oxide/SBA-15.
[embodiment 4] the present invention decomposes the effect (2) containing volatile organic matter gas
First, the acetone gas of a 500ppm is provided.Afterwards, under 150 ~ 300 DEG C of reaction temperatures, make silver/iron oxide/SBA-15 catalyst exposure that [embodiment 3] of acetone gas and 0.1 gram is obtained, to decompose acetone gas for carbon dioxide and water.The space velocity of acetone gas and silver/iron oxide/SBA-15 catalyst exposure is 176,000hr
-1.
The present embodiment decomposes the result display of acetone gas, can reach the removal efficiency of 95%, as shown in Figure 2 in 250 DEG C.
The preparation (3) of [embodiment 5] catalyst of the present invention
Utilize deposition-precipitation support silver and cerium oxide in SBA-15.
Detailed preparation method is described as follows: add silver nitrate and cerous nitrate and urea in deionized water for stirring to dissolving completely, its percentage by weight is 1:1:2:200.Afterwards, add the SBA-15 that weight is 1.5 times of silver nitrate, and uniform stirring.Instillation nitric acid adjusted to ph is between 2 ~ 3.Then, temperature is maintained 90 DEG C, continue stirring after 16 hours, carry out 3 filtrations, water wash procedures, drying, 500 DEG C of heat treatments, after 5 hours, form silver/cerium oxide/SBA-15.
[embodiment 6] the present invention decomposes the effect (3) containing volatile organic matter gas
First, the isopropyl alcohol gas of a 100ppm is provided.Afterwards, under 150 ~ 300 DEG C of reaction temperatures, make silver/cerium oxide/SBA-15 catalyst exposure that [embodiment 5] of isopropyl alcohol gas and 0.1 gram is obtained, to decompose acetone gas for carbon dioxide and water.The space velocity of isopropyl alcohol gas and silver/cerium oxide/SBA-15 catalyst exposure is 176,000hr
-1.
The present embodiment decomposes the result display of isopropyl alcohol gas, can reach the removal efficiency of 95%, as shown in Figure 3 in 200 DEG C.
The preparation (4) of [embodiment 7] catalyst of the present invention
Utilize that deposition-precipitation supports silver and cerium oxide, manganese oxide is in SBA-15.
Detailed preparation method is described as follows: add silver nitrate and cerous nitrate and manganese nitrate and urea in deionized water for stirring to dissolving completely, its percentage by weight is 1:1:2:4:200.Afterwards, add the SBA-15 that weight is 1.5 times of silver nitrate, and uniform stirring.Instillation nitric acid adjusted to ph is between 2 ~ 3.Then, temperature is maintained 90 DEG C, continue stirring after 16 hours, carry out 3 filtrations, water wash procedures, drying, 500 DEG C of heat treatments, after 5 hours, form silver/cerium oxide/manganese oxide/SBA-15.
Obtained catalyst is supported further in monolithic pottery (diameter 50mm, height 50mm, 100cell/in
2).The weight of above-mentioned catalyst is 10% of monolithic pottery.
[embodiment 8] the present invention decomposes the effect (4) containing volatile organic matter gas
First, the isopropyl alcohol gas of a 140ppm is provided.Afterwards, under 100 ~ 300 DEG C of reaction temperatures, make catalyst exposure prepared by isopropyl alcohol gas and [embodiment 7], to decompose isopropyl alcohol gas for carbon dioxide and water.The space velocity of catalyst exposure prepared by isopropyl alcohol gas and [embodiment 7] is 12,000hr
-1.
The present embodiment decomposes the result display of isopropyl alcohol gas, and the removal efficiency of 50%, 95% can reach in 150 DEG C, 200 DEG C.
In addition, decompose the result display of 120ppm acetone gas, the removal efficiency of 50%, 95% can reach in 145 DEG C, 200 DEG C.Decompose the result display of 10ppm propylene glycol monomethyl ether gas, the removal efficiency of 50% can reach in 80 DEG C.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, anyly have the knack of this those skilled in the art, without departing from the spirit and scope of the present invention; when doing to change and retouching, the scope that therefore protection scope of the present invention ought define depending on accompanying claims is as the criterion.
Claims (10)
1. a catalyst for decomposing volatile organic matters, comprising:
One Hole material, wherein the aperture of this Hole material is between 2 ~ 50nm, and specific area is between 600 ~ 1,000m
2/ g;
One silver metal, supports in this Hole material; And
One transition metal oxide, support in this Hole material, wherein this transition metal oxide is the combination of cerium oxide and manganese oxide, and the percentage by weight of this transition metal oxide in catalyst is between 1 ~ 30wt%,
Wherein the particle diameter of this silver metal and this transition metal oxide is between 2 ~ 50nm.
2. the catalyst of decomposing volatile organic matters as claimed in claim 1, wherein this Hole material is silica, aluminium oxide or sieve and silica-sesquioxide.
3. the catalyst of decomposing volatile organic matters as claimed in claim 1, wherein the percentage by weight of this silver metal is between 1 ~ 30wt% of this catalyst.
4. the catalyst of decomposing volatile organic matters as claimed in claim 1, wherein this volatile organic matter is isopropyl alcohol, acetone or propylene glycol monomethyl ether.
5. a method for decomposing volatile organic matters, comprising:
There is provided one containing the gas of volatile organic matter; And
Make this gas containing volatile organic matter and the catalyst exposure as described in the claim of one of claim 1-4, the gas making this contain volatile organic matter decomposes and is oxidized to carbon dioxide and water.
6. the method for decomposing volatile organic matters as claimed in claim 5 should be wherein engine exhaust, organic solvent volatile gas body or contaminated air containing the gas of volatile organic matter.
7. the method for decomposing volatile organic matters as claimed in claim 5, wherein this volatile organic matter is isopropyl alcohol, acetone or propylene glycol monomethyl ether.
8. the method for decomposing volatile organic matters as claimed in claim 7, wherein should containing the gas of volatile organic matter and the temperature of this catalyst exposure lower than 300 DEG C.
9. the method for decomposing volatile organic matters as claimed in claim 8, wherein should containing the gas of volatile organic matter and the temperature of this catalyst exposure between 80 ~ 200 DEG C.
10. the method for decomposing volatile organic matters as claimed in claim 9, is wherein somebody's turn to do the space velocity of the gas and this catalyst exposure containing volatile organic matter between 10,000 ~ 200,000hr
-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510361976.6A CN104971765A (en) | 2009-01-19 | 2009-12-21 | Catalyst and method for decomposing volatile organic compounds |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910005507 | 2009-01-19 | ||
| CN2009100055075 | 2009-01-19 | ||
| CN201510361976.6A CN104971765A (en) | 2009-01-19 | 2009-12-21 | Catalyst and method for decomposing volatile organic compounds |
| CN200910261911A CN101780408A (en) | 2009-01-19 | 2009-12-21 | Catalyst and method for decomposing volatile organic matters |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910261911A Division CN101780408A (en) | 2009-01-19 | 2009-12-21 | Catalyst and method for decomposing volatile organic matters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104971765A true CN104971765A (en) | 2015-10-14 |
Family
ID=54269054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510361976.6A Pending CN104971765A (en) | 2009-01-19 | 2009-12-21 | Catalyst and method for decomposing volatile organic compounds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104971765A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106622212A (en) * | 2016-12-08 | 2017-05-10 | 上海纳米技术及应用国家工程研究中心有限公司 | Manganese-based catalyst for volatile organic compound governance, and preparation and application thereof |
| CN112569963A (en) * | 2019-09-27 | 2021-03-30 | 财团法人工业技术研究院 | Catalyst, method for forming the same and method for removing volatile organic compounds |
| CN114452972A (en) * | 2020-11-09 | 2022-05-10 | 财团法人工业技术研究院 | Catalyst and method for forming the same and conversion of NO to NO2Method (2) |
| CN115301254A (en) * | 2022-09-29 | 2022-11-08 | 山东华城工程技术有限公司 | Ozone oxidation catalyst, preparation and application thereof in water treatment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304761A (en) * | 1980-11-28 | 1981-12-08 | Ford Motor Company | Method of treating exhaust gases from a methanol fueled internal combustion engine |
| CN1919455A (en) * | 2005-08-25 | 2007-02-28 | 中国科学院生态环境研究中心 | Process for eliminating volatile organic pollutant by catalytic oxidation |
-
2009
- 2009-12-21 CN CN201510361976.6A patent/CN104971765A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304761A (en) * | 1980-11-28 | 1981-12-08 | Ford Motor Company | Method of treating exhaust gases from a methanol fueled internal combustion engine |
| CN1919455A (en) * | 2005-08-25 | 2007-02-28 | 中国科学院生态环境研究中心 | Process for eliminating volatile organic pollutant by catalytic oxidation |
Non-Patent Citations (1)
| Title |
|---|
| MENG-FEI LUO ET AL.: "Catalyst Characterization and Activity of Ag-Mn，Ag-Co and Ag-Ce Composite Oxides for Oxidation of Volatile Organic Compounds", 《APPLIED CATALYSIS A:GENERAL》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106622212A (en) * | 2016-12-08 | 2017-05-10 | 上海纳米技术及应用国家工程研究中心有限公司 | Manganese-based catalyst for volatile organic compound governance, and preparation and application thereof |
| CN112569963A (en) * | 2019-09-27 | 2021-03-30 | 财团法人工业技术研究院 | Catalyst, method for forming the same and method for removing volatile organic compounds |
| CN112569963B (en) * | 2019-09-27 | 2023-08-08 | 财团法人工业技术研究院 | Catalyst, method for forming the same and method for removing volatile organic compounds |
| CN114452972A (en) * | 2020-11-09 | 2022-05-10 | 财团法人工业技术研究院 | Catalyst and method for forming the same and conversion of NO to NO2Method (2) |
| CN115301254A (en) * | 2022-09-29 | 2022-11-08 | 山东华城工程技术有限公司 | Ozone oxidation catalyst, preparation and application thereof in water treatment |
| CN115301254B (en) * | 2022-09-29 | 2022-12-23 | 山东华城工程技术有限公司 | Ozone oxidation catalyst, preparation and application thereof in water treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI409102B (en) | Catalyst and method for decomposing volatile organic compounds | |
| CN103816918B (en) | Manganese oxide based absorption/the Catalysts and its preparation method of a kind of weak crystallized nano | |
| CN100475312C (en) | Method for purifying organic waste gas | |
| CN107983338B (en) | Method for improving catalytic performance of perovskite type composite metal oxide | |
| CN106140090A (en) | A kind of MnO for removing indoor formaldehyde2aCF material and preparation method thereof | |
| CN100558445C (en) | The purification method of organic exhaust gas | |
| CN101204654A (en) | Supported noble metal catalyst for low-temperature catalytic oxidation benzene series and preparation method thereof | |
| CN104646029A (en) | Metal alloy catalyst for formaldehyde purification and preparation method thereof | |
| CN101780408A (en) | Catalyst and method for decomposing volatile organic matters | |
| CN103386304B (en) | Preparation method of catalyst for catalytic combustion of volatile organic compounds | |
| CN102814108A (en) | Ozone-assisted method for catalytic decomposition of volatile organic pollutants in high-temperature flue gas | |
| CN104971765A (en) | Catalyst and method for decomposing volatile organic compounds | |
| CN109054034B (en) | Bimetallic copper/cobalt metal-organic framework material and preparation method and application thereof | |
| CN104676610A (en) | Method for removing toluene by catalytic oxidation | |
| CN104492433A (en) | Adsorption catalyst based on activated carbon felt base as well as preparation method and application of adsorption catalyst | |
| CN201880485U (en) | VOCs (Volatile Organic chemicals) waste gas processing system in printing technology | |
| CN113600166A (en) | Biomass-based catalyst for advanced oxidation and preparation method and application thereof | |
| CN103386312B (en) | Method for preparing spherical shell type catalyst for catalytic combustion of VOCs (volatile organic compounds) | |
| CN113996294A (en) | Method for recycling and preparing CO-SCR denitration catalyst from waste precious metal/stainless steel screen catalyst | |
| CN107998824A (en) | A kind of VOCs recyclings treatment process | |
| CN113385184B (en) | Mn-Co-La composite catalyst for catalyzing and degrading VOCs (volatile organic compounds) by synergistic discharge plasma and preparation method and application thereof | |
| CN1327966C (en) | Process for preparing fluorine blended metal oxide catalyst | |
| CN110026253A (en) | A kind of collaboration denitration takes off the regeneration method of dioxin catalyst | |
| CN111215067B (en) | Preparation method and application of lutecium gadolinium modified delta-manganese oxide compound supported platinum catalyst | |
| CN106475108A (en) | A kind of multiple-effect denitrating catalyst and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151014 |