CN106423149B - A kind of monoblock type formaldehyde room temperature oxidation catalyst and preparation method thereof - Google Patents
A kind of monoblock type formaldehyde room temperature oxidation catalyst and preparation method thereof Download PDFInfo
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- CN106423149B CN106423149B CN201610889884.XA CN201610889884A CN106423149B CN 106423149 B CN106423149 B CN 106423149B CN 201610889884 A CN201610889884 A CN 201610889884A CN 106423149 B CN106423149 B CN 106423149B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0203—Impregnation the impregnation liquid containing organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Abstract
The invention discloses a kind of monoblock type formaldehyde room temperature oxidation catalysts and preparation method thereof, are related to catalyst preparation and environment protection field.The monoblock type formaldehyde room temperature oxidation catalyst is using loaded noble metal catalyst as active component, using alkaline matter as binder and coagent, is constituted using molding honeycomb substrate as matrix.The monoblock type formaldehyde room temperature oxidation catalyst is by stirring into solution for loaded noble metal catalyst and alkaline matter, then honeycomb substrate is impregnated into the solution, is made through constant temperature drying.Formaldehyde through catalytic oxidation can be converted to harmless H under conditions of being not necessarily to other attachment devices by monoblock type formaldehyde room temperature oxidation catalyst formaldehyde low-temperature catalytic oxidation activity with higher of the present invention2O and CO2, and then realize that the green of formaldehyde is eliminated.Preparation method simple process, step are few, easily operated, are suitble to industrialized production.
Description
Technical field
The present invention relates to catalyst preparation and environment protection field more particularly to a kind of monoblock type formaldehyde room temperature oxidation catalyst and
Preparation method.
Background technique
Formaldehyde is gas colourless, with intense irritation smell, is one of the pollutant of indoor most serious, is widely present
In various finishings, ornament materials, and deenergized period is longer.People's Long Term Contact can cause headache, dizzy, out of strength, immunity
It reduces, phenomena such as drowsiness, failure of memory, mental depression occurs, and will increase a possibility that suffering from cancer.For this purpose, formaldehyde by
The World Health Organization is determined as carcinogenic and causes deformed material.GB50325-2010 " the ring in civil building engineering room that China promulgates
Border control specification " and " Indoor Air Quality standards " (GB/T18883-2002) regulation formaldehyde in indoor air sanitary standard be
0.08mg/m3.However according to statistics, after finishing in 1~6 month, formaldehyde housing room is up to 80%, meeting room, office etc.
Close to 100%, finishing still has 50% or more exceeded public place exceeding standard rate after 3 years.
Purifying indoor formaldehyde there are commonly absorption method and catalytic oxidation, the former since adsorbent needs to regularly replace, and
And its adsorption capacity is influenced by indoor environment temperature, humidity, or even the phenomenon that will appear reverse desorption, is of limited application.It urges
Change oxidizing process removal efficiency with higher and service life, formaldehyde can be made to be decomposed into H in low-temperature oxidation2O and CO2, it is generally acknowledged
Efficient, the environmentally friendly and energy-efficient method of formaldehyde pollution can be inherently eliminated.
The catalyst of catalysis oxidation formaldehyde mainly has: noble metal systems and transition gold based on Pt, Pd, Ag, Au etc.
Belonging to (Mn, Fe, Ni, Co, Cu, Zn etc.), complex rare-earth oxidate containing valuable metal or mixture (La, Ce, Zr, Nd, Sr, Pr etc.) is the non-of representative
Noble metal systems.Huang etc. (Huang H, Leung D Y C, et.al., ACS Catal, 2011, (1) 4:348~354) benefit
Use NaBH4Reduction method is prepared for 1wt%Pd/TiO2Catalyst is 50% and room in SV=120000mL/ (gh), relative humidity
It can be by the formaldehyde complete oxidation of 10ppm under the conditions of temperature.The rare earth oxide of Chinese patent CN1698932A gold-supported or suction
Attached Anatase type titanium deoxide catalyst can obtain preferable effect, still, high humility and thermal energy at a temperature of 80-100 DEG C
Input be the widely applied biggest obstacle of the catalyst.United States Patent (USP) US5585083 has invented a kind of Pt-Au/SnO2Catalysis
The method that agent removes formaldehyde in air, catalyst is under the conditions of not additional energy input and -5~25 DEG C, in air
Oxygen will perfect degradable at carbon dioxide and water for oxidant.But Pt content (12%) high in catalyst causes to be catalyzed
Agent it is expensive, therefore this catalyst can only be using the special occasions such as some military projects or aerospace.
Since there is loaded noble metal catalyst excellent low-temperature oxidation performance to be widely used to the removal of room temperature formaldehyde,
And alkali metal salt or hydroxide are added in loaded noble metal catalyst, enable catalyst surface to be that alkaline environment is significant
Improve its low-temperature catalyzed performance.Currently, alkali metal salt or the method for hydroxide are added in loaded noble metal catalyst to be had:
It is added in the preparation process of loaded noble metal catalyst, participates in reacting as precipitating reagent, the advantage of this operation
It is that a step is completed, operation is fairly simple, but alkaline environment can generate one to noble metal nano particles generating process and its size
Fixing is rung, and leads to active reduction；Or with the molten of alkali metal salt or hydroxide after the completion of loaded noble metal catalyst preparation
Liquid is washed, and the advantage of this operation is not influence catalyst activity, but the processes such as washing and subsequent drying can make support type
Noble metal catalyst preparation process is more cumbersome, is unfavorable for industrialized production, if it is integral supported type noble metal catalyst,
Washing process also results in falling off for catalyst coat, makes catalyst activity reduction.
Summary of the invention
One, technical problems to be solved
For the problems of above-mentioned prior art, the present invention provide a kind of monoblock type formaldehyde room temperature oxidation catalyst and
Preparation method.Purpose is that solution eliminating formaldehyde at room temperature catalytic activity is low, preparation process is cumbersome, washing process causes catalyst to apply
Layer fall off, activity component load quantity is low, be added alkaline matter when have an adverse effect to catalyst preparation process, be not suitable for industry
The problems such as metaplasia produces.
Two, technical solution
In order to achieve the above objectives, the present invention adopts the following technical scheme:
Monoblock type formaldehyde room temperature oxidation catalyst of the present invention is used using loaded noble metal catalyst as active component,
Using alkaline matter as binder and coagent, constituted using molding honeycomb substrate as matrix, wherein constituent content are as follows:
Loaded noble metal catalyst 0.5%~15%
Alkaline matter 0.5%~15%
Honeycomb substrate 70%~99%
All percentages are weight percent.
Wherein in the loaded noble metal catalyst, noble metal weight accounts for the loaded noble metal catalyst weight
Percentage be 0.1%~5%.
Preparation method the following steps are included:
(1) loaded noble metal catalyst is prepared, wherein noble metal weight accounts for the loaded noble metal catalyst weight
Percentage be 0.1%~5%；
(2) according to being in terms of 100% by the weight of monoblock type formaldehyde room temperature oxidation catalyst, will account for weight percent is
0.5%~15% loaded noble metal catalyst is prepared with the alkaline matter stirring that weight percent is 0.5%~15% is accounted for
At solution；
(3) according to formula rate in above-mentioned (2), the honeycomb substrate for accounting for remaining weight percentage is immersed in the solution
In, it is taken out after impregnating 0.1-10min, removes solution extra on honeycomb substrate, after constant temperature drying to weight no longer changes, be made
The monoblock type formaldehyde room temperature oxidation catalyst.
In step (1), loaded noble metal catalyst type is conventional load type noble metal catalyst.Such as: Pd/
TiO2、Ru/Al2O3、Pt/TiO2、Au/Fe2O3、Pt-Pd/SiO2。
In step (2), noble metal catalyst is noble metal catalyst powder, or impregnates precious metal catalyst for precious metal salt
The precursor that agent carrier obtains, or the noble metal catalyst suspension to be obtained through precipitating, restoring operation.If noble metal catalyst
The precursor that precious metal catalyst agent carrier obtains is impregnated for precious metal salt, alkaline matter need to be added after immersion；It or is warp
The noble metal catalyst suspension that precipitating, restoring operation obtain need to add alkaline matter after precipitating, reduction.
In step (2), alkaline matter is sodium carboxymethylcellulose, alkalescent phenol resin, basic clay, phosphate, alkali
One or more of property silica solution, waterglass, Aluminum sol.
In step (3), constant temperature drying temperature is 50 DEG C~180 DEG C.
In step (3), in order to improve the load capacity of honeycomb substrate load monoblock type formaldehyde room temperature oxidation catalyst coating,
Honeycomb substrate is immersed in acid solution or aqueous slkali in advance, corrodes the surface of honeycomb substrate, to carry out surface to honeycomb substrate
Modification improves the specific surface area of honeycomb substrate, after honeycomb substrate is soaked for a period of time, by honeycomb substrate from acid solution
Or taken out in aqueous slkali, the residual solution in honeycomb substrate duct is then removed, it is spare after being dried, being roasted.
It is removal monoblock type formaldehyde room temperature oxidation catalyst surface impurity or further activation to improve in step (3)
The activity of monoblock type formaldehyde room temperature oxidation catalyst is roasted the monoblock type formaldehyde room temperature oxidation catalyst being prepared into, also
Origin operation.
Three, beneficial effect
Compared with prior art, the present invention provides a kind of monoblock type formaldehyde room temperature oxidation catalysts, using alkaline matter
Alkaline environment is introduced, wherein the hydroxide ion generated can displace the foreign ion of precious metal surface such as chloride ion,
Monoblock type formaldehyde room temperature oxidation catalyst is set to expose more surface-active sites.Hydroxide ion can also promote HCHO
Dehydrogenation occurs for molecule and then aoxidizes to generate carbon dioxide, improves the activity of monoblock type formaldehyde room temperature oxidation catalyst.And
And the addition of alkaline matter and loaded noble metal catalyst preparation process are independent mutually, the introducing of alkaline environment will not be to load
The forming process of noble metal nano particles in type noble metal catalyst impacts.
Meanwhile the presence of alkaline matter considerably increases the viscosity of loaded noble metal catalyst solution, allows to jail
Solid combination in monoblock type formaldehyde room temperature oxidation catalyst carrier surface, improve loaded noble metal catalyst in honeycomb substrate
On load capacity, the monoblock type formaldehyde room temperature oxidation catalyst coating of preparation is also more uniform, stablizes, and expulsion rate is low.
In short, the addition of alkaline matter, the load capacity of monoblock type formaldehyde room temperature oxidation catalyst coating and steady had both been improved
It is qualitative, and provide and promote the active alkaline environment of monoblock type formaldehyde room temperature oxidation catalyst, avoid additional addition basic species
Matter causes the decline of monoblock type formaldehyde room temperature oxidation catalyst activity or aqueous slkali washing that monoblock type formaldehyde room temperature oxidation is caused to be urged
The problems such as agent coating shedding, enormously simplifies monoblock type first while improving monoblock type formaldehyde room temperature oxidation catalyst activity
The preparation process of aldehyde room-temperature oxidation catalyst.
Specific embodiment
Technical solution of the present invention is described further combined with specific embodiments below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
(1) 0.33g H is added into beaker2PtCl4、24.875g TiO2(P25), 500ml distilled water, stirring is added
0.5h；
(2) 0.1g NaBH is taken into another beaker4Stirring is dissolved in 50ml water；
(3) 1h is stirred by solution obtained in solution obtained in step (2) addition step (1) at room temperature；
(4) 10g sodium carboxymethylcellulose is added into (3) solution, stirs 15min；
(5) 15cm*15cm*1cm specification cordierite honeycomb ceramic is taken to be immersed in step (4) in solution obtained, centainly
After time, honeycomb substrate is taken out, removes solution extra on honeycomb substrate, is dried to after weight no longer changes and makes at 150 DEG C
Obtain monoblock type formaldehyde room temperature oxidation catalyst.
Embodiment 2
(1) 0.33g H is added into beaker2PtCl4、24.875g SiO2(P25), 500ml distilled water, stirring is added
0.5h；
(2) 0.1g NaBH is taken into another beaker4Stirring is dissolved in 50ml water；
(3) 1h is stirred by solution obtained in solution obtained in step (2) addition step (1) at room temperature；
(4) 10g sodium carboxymethylcellulose is added into (3) solution, stirs 15min；
(5) 15cm*15cm*1cm specification cordierite honeycomb ceramic is taken to be immersed in step (4) in solution obtained, centainly
After time, honeycomb substrate is taken out, removes solution extra on honeycomb substrate, is dried to after weight no longer changes and makes at 150 DEG C
Obtain monoblock type formaldehyde room temperature oxidation catalyst.
Embodiment 3
(1) 0.35g Na is added into beaker2PdCl4、24.875g TiO2(P25), 500ml distilled water, stirring is added
0.5h；
(2) 0.1g NaBH is taken into another beaker4Stirring is dissolved in 50ml water；
(3) 1h is stirred by solution obtained in solution obtained in step (2) addition step (1) at room temperature；
(4) 10g sodium carboxymethylcellulose is added into (3) solution, stirs 15min；
(5) 15cm*15cm*1cm specification cordierite honeycomb ceramic is taken to be immersed in solution obtained in step (4), centainly
After time, honeycomb substrate is taken out, removes solution extra on honeycomb substrate, is dried to after weight no longer changes and makes at 150 DEG C
Obtain monoblock type formaldehyde room temperature oxidation catalyst.
Comparative example 1
(1) 0.33g H is added into beaker2PtCl4、24.875g TiO2(P25), 500ml distilled water, stirring is added
0.5h；
(2) 0.1g NaBH is taken into another beaker4Stirring is dissolved in 50ml water；
(3) 1h is stirred by solution obtained in solution obtained in step (2) addition step (1) at room temperature；
(4) 15cm*15cm*1cm specification cordierite honeycomb ceramic is taken to be immersed in solution described in step (3), a timing
Between after, honeycomb substrate is taken out, solution extra on honeycomb substrate is removed, is dried to after weight no longer changes and obtains at 150 DEG C
Integral catalyzer.
Comparative example 2
(1) 0.33g H is added into beaker2PtCl4、24.875g TiO2(P25), 500ml distilled water, stirring is added
0.5h；
(2) 0.1g NaBH is taken into another beaker4Stirring is dissolved in 50ml water；
(3) 1h is stirred by solution obtained in solution obtained in step (2) addition step (1) at room temperature；
(4) 10g polyethylene glycol is added into (3) solution, stirs 15min；
(5) 15cm*15cm*1cm specification cordierite honeycomb ceramic is taken to be immersed in solution described in step (4), a timing
Between after, honeycomb substrate is taken out, solution extra on honeycomb substrate is removed, is dried to after weight no longer changes and obtains at 150 DEG C
Integral catalyzer.
Performance test
To investigate catalyst prepared by the present invention catalysis oxidation effect of formaldehyde at room temperature, by Examples 1 to 3, comparative example 1
~2 respectively take respectively two it is packaged enter homemade air purifier in, in air quantity 180m3/ h, in 3m3In (2m*1.5m*1m) purifying cabin
Test, 45W fan built in purifying cabin.Concentration of formaldehyde 1.0mg/m3~1.2mg/m3, 15 DEG C~20 DEG C of temperature, humidity 50%RH~
80%RH, concentration of formaldehyde are tested using phenol reagent process (GB/T 18204.26), and test result is as shown in table 1, wherein purification efficiency
* 100%/initial concentration of=(initial concentration-test concentrations).
Table 1
As can be seen from Table 1, Examples 1 to 3 can make formaldehyde carry out catalysis oxidation at room temperature.Illustrate this method pair
Different noble metal components, different catalysts carrier are effective.Comparative example 1 is similar to 1 preparation method of embodiment, but comparative example 1 does not have
Have an addition alkaline matter, load capacity of the loaded noble metal catalyst on honeycomb substrate be lower and formaldehyde through catalytic oxidation it is active compared with
Difference.And comparative example 2 joined neutral substance polyethylene glycol, although load capacity of the loaded noble metal catalyst on honeycomb substrate
It increases, but catalytic activity is still very low.This illustrates that the present invention can not only improve loaded noble metal catalyst in cellular set
The load capacity of body can more significantly improve catalytic oxidation activity.
Obviously, above-described embodiment is only intended to clearly illustrate done citing, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Change the protection scope still in the invention.
Claims (9)
1. a kind of monoblock type formaldehyde room temperature oxidation catalyst, which is characterized in that the monoblock type formaldehyde room temperature oxidation catalyst with
Loaded noble metal catalyst is active component, using alkaline matter as binder and coagent, is with molding honeycomb substrate
Matrix is constituted, constituent content are as follows:
Loaded noble metal catalyst 0.5%~15%
Alkaline matter 0.5%~15%
Honeycomb substrate 70%~99%
All percentages are weight percent；
The alkaline matter is that sodium carboxymethylcellulose, alkalescent phenol resin, basic clay, phosphate, waterglass, alkaline silicon are molten
One or more of glue, Aluminum sol.
2. monoblock type formaldehyde room temperature oxidation catalyst according to claim 1, which is characterized in that the carried noble metal catalysis
In agent, it is 0.1%~5% that wherein noble metal weight, which accounts for the percentage of the loaded noble metal catalyst weight,.
3. a kind of method for preparing monoblock type formaldehyde room temperature oxidation catalyst described in claim 1, which is characterized in that the side
Method the following steps are included:
(1) loaded noble metal catalyst is prepared, wherein noble metal weight accounts for the hundred of the loaded noble metal catalyst weight
Divide than being 0.1%~5%；
(2) according to by the weight of monoblock type formaldehyde room temperature oxidation catalyst be 100% in terms of, will account for weight percent be 0.5%~
15% loaded noble metal catalyst is configured to solution with the alkaline matter stirring that weight percent is 0.5%~15% is accounted for；
(3) according to formula rate in above-mentioned (2), the honeycomb substrate for accounting for remaining weight percentage is immersed in the solution, is soaked
It is taken out after stain 0.1-10min, removes solution extra on honeycomb substrate and it is whole that this is made after constant temperature drying to weight no longer changes
Body formula formaldehyde room temperature oxidation catalyst.
4. according to the method described in claim 3, it is characterized in that, in step (2), the loaded noble metal catalyst is
Loaded noble metal catalyst powder, or the precursor obtained for precious metal salt impregnated load type precious metal catalyst agent carrier, or
For the loaded noble metal catalyst suspension obtained through precipitating, restoring operation.
5. according to the method described in claim 4, it is characterized in that, the loaded noble metal catalyst is precious metal salt dipping
The precursor that loaded noble metal catalyst carrier obtains need to add alkaline matter after immersion；Or the support type is expensive
Metallic catalyst is the loaded noble metal catalyst suspension obtained through precipitating, restoring operation, need to be after precipitating or reduction
Add alkaline matter.
6. according to the method described in claim 3, it is characterized in that, the alkaline matter is carboxymethyl cellulose in step (2)
One or more of plain sodium, alkalescent phenol resin, basic clay, phosphate, waterglass, alkaline silica sol, Aluminum sol.
7. according to the method described in claim 3, it is characterized in that, in the step (3), constant temperature drying temperature is 50 DEG C~
180℃。
8. according to the method described in claim 3, it is characterized in that, further including will be finally obtained whole in the step (3)
Body formula formaldehyde room temperature oxidation catalyst roasted, restoring operation.
9. according to the method described in claim 3, it is characterized in that, in step (3), before impregnating the solution (2), with acid
The surface of solution or alkali soluble corrosion honeycomb substrate.
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| CN106955681A (en) * | 2017-03-21 | 2017-07-18 | 中山大学惠州研究院 | A kind of preparation method of integral catalyzer for purifying formaldehyde |
| CN107398272B (en) * | 2017-08-09 | 2021-01-12 | 西安凯立新材料股份有限公司 | Composite carrier catalyst for room-temperature catalysis of formaldehyde and preparation method thereof |
| CN108201789A (en) * | 2017-12-19 | 2018-06-26 | 如皋六维环境科技有限公司 | A kind of preparation method of purifying formaldehyde material and application |
| CN108579745A (en) * | 2018-04-12 | 2018-09-28 | 青岛华世洁环保科技有限公司 | A kind of monoblock type VOCs oxidation catalysts and preparation method thereof |
| KR102021420B1 (en) * | 2019-02-27 | 2019-09-16 | 우태영 | Air filter made of glass or aluminum structure using photocatalyst precoat and manufaturing method there of |
| CN113332427B (en) * | 2021-05-13 | 2022-09-13 | 浙江大学杭州国际科创中心 | Fe 2 O 3 @ Pt multifunctional nano-particle and preparation method and application thereof |
| CN113731479A (en) * | 2021-09-28 | 2021-12-03 | 无锡威孚环保催化剂有限公司 | HCHO catalyst capable of efficiently and rapidly degrading at room temperature and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102139234A (en) * | 2011-01-06 | 2011-08-03 | 梁耀彰 | Loaded reduced precious metal catalyst as well as preparation method and application thereof |
| CN103028423A (en) * | 2012-12-11 | 2013-04-10 | 武汉理工大学 | Inactivation and regeneration method of formaldehyde room-temperature oxidation catalyst |
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| CN102139234A (en) * | 2011-01-06 | 2011-08-03 | 梁耀彰 | Loaded reduced precious metal catalyst as well as preparation method and application thereof |
| CN103028423A (en) * | 2012-12-11 | 2013-04-10 | 武汉理工大学 | Inactivation and regeneration method of formaldehyde room-temperature oxidation catalyst |
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