CN115739076A - Preparation method and application of platinum-based regular catalyst for catalytic purification of VOCs (volatile organic compounds) - Google Patents
Preparation method and application of platinum-based regular catalyst for catalytic purification of VOCs (volatile organic compounds) Download PDFInfo
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- CN115739076A CN115739076A CN202211463890.0A CN202211463890A CN115739076A CN 115739076 A CN115739076 A CN 115739076A CN 202211463890 A CN202211463890 A CN 202211463890A CN 115739076 A CN115739076 A CN 115739076A
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- platinum
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- aluminum metal
- honeycomb substrate
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000003054 catalyst Substances 0.000 title claims abstract description 49
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 47
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 21
- 238000000746 purification Methods 0.000 title claims abstract description 16
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical class [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 238000002791 soaking Methods 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 14
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 11
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims abstract description 11
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 9
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000003213 activating effect Effects 0.000 claims abstract description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 9
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 9
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims abstract description 9
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims abstract description 8
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- 239000013067 intermediate product Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 15
- 101150003085 Pdcl gene Proteins 0.000 claims description 7
- 229910000510 noble metal Inorganic materials 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 229960001484 edetic acid Drugs 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 14
- 239000002390 adhesive tape Substances 0.000 abstract description 10
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 6
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 11
- 239000012153 distilled water Substances 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000007084 catalytic combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 229910002666 PdCl2 Inorganic materials 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
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- Catalysts (AREA)
Abstract
The invention discloses a preparation method and application of a platinum-based structured catalyst for VOCs catalytic purification 2 Soaking in the activating solution to obtain an activated aluminum metal honeycomb substrate; placing the activated aluminum metal honeycomb substrate in a chamber consisting of H 2 PtCl 6 Concentrated ammonia water, disodium ethylene diamine tetraacetate and anhydrousSoaking in a chemical autodeposition mixed solution prepared from ethylenediamine, sodium hypophosphite and sodium borohydride to obtain a catalyst intermediate; and drying and carrying out aerobic roasting on the catalyst intermediate product to obtain the platinum-based regular catalyst. In the prepared platinum-based regular catalyst, as the platinum active component particles are a platinum active component thin layer with the micron thickness formed by directly precipitating in situ on the surface of the aluminum metal honeycomb substrate, the platinum component is firmly loaded on the surface of the aluminum metal honeycomb substrate, and the phenomena of peeling and falling off do not occur in a bending test and an adhesive tape test.
Description
Technical Field
The invention belongs to the technical field of air purification, and particularly relates to a preparation method and application of a platinum-based regular catalyst for catalytic purification of VOCs (volatile organic compounds).
Background
Volatile Organic Compounds (VOCs) are important precursors for forming PM2.5, and are one of the causes of haze pollution in urban communities. The regenerative catalytic combustion technology is considered as the most effective method for treating VOCs with high flow rate and medium-low concentration at present, and the core of the regenerative catalytic combustion technology is a low-temperature regular catalyst. The platinum-based regular catalyst is widely used in the catalytic purification of VOCs because of the optimal low-temperature catalytic activity. Among them, the aluminum metal honeycomb substrate is one of the commonly used carrier types of the platinum-based structured catalyst because of its advantages of high mechanical strength, impact resistance, easy processing, and rapid mass and heat transfer. However, the surface of the aluminum metal honeycomb substrate is smooth and basically non-porous, and the active component platinum is difficult to be firmly supported by adopting the traditional impregnation method or coating technology, so that the active component falls off and is deactivated in the use of the catalyst.
Disclosure of Invention
The present invention has been made to solve at least one of the above-mentioned problems occurring in the prior art. Therefore, the invention provides a preparation method and application of a platinum-based regular catalyst for VOCs catalytic purification.
According to one aspect of the invention, a preparation method of a platinum-based structured catalyst is provided, which comprises the following steps:
s1: placing an aluminum metal honeycomb substrate in PdCl 2 Soaking in the activating solution to obtain an activated aluminum metal honeycomb substrate;
s2: placing the activated aluminum metal honeycomb substrate in a container consisting of H 2 PtCl 6 Soaking in a chemical self-deposition mixed solution prepared from concentrated ammonia water, disodium ethylene diamine tetraacetate, anhydrous ethylenediamine, sodium hypophosphite and sodium borohydride to obtain a catalyst intermediate product;
s3: and drying and carrying out aerobic roasting on the catalyst intermediate product to obtain the platinum-based regular catalyst.
In some embodiments of the invention, in step S1, the PdCl is 2 The concentration of the activating solution is 0.01-0.03mmol/L.
In some embodiments of the present invention, in step S1, the soaking temperature is 35 to 45 ℃ and the soaking time is 2 to 10min.
In some embodiments of the invention, in step S2, H in the chemical autodeposition mixture is 2 PtCl 6 The concentration of the sodium hypophosphite is 0.1-1.0mmol/L, the concentration of concentrated ammonia water is 50-200mmol/L, the concentration of disodium ethylene diamine tetraacetate is 10-50mmol/L, the concentration of anhydrous ethylenediamine is 10-50mmol/L, the concentration of sodium hypophosphite is 30-80mmol/L, and the concentration of sodium borohydride is 30-80mmol/L.
In some embodiments of the present invention, in step S2, the soaking temperature is 20 to 70 ℃ and the soaking time is 2 to 10 hours.
In some embodiments of the present invention, in step S3, the drying temperature is 70 to 90 ℃ and the drying time is 5 to 10 hours.
In some embodiments of the present invention, in step S3, the calcination temperature is 300 to 600 ℃ and the calcination time is 3 to 10 hours.
In some embodiments of the invention, in step S3, the atmosphere of the firing is air.
In some embodiments of the present invention, the noble metal platinum in the platinum-based structured catalyst is present in an amount of 0.05wt% to 0.50wt%.
The invention also provides application of the platinum-based regular catalyst prepared by the preparation method in catalytic purification of VOCs.
According to a preferred embodiment of the invention, at least the following advantages are achieved:
by adopting the chemical self-deposition technology, the low-content noble metal platinum can be directly loaded on the aluminum metal honeycomb substrate through a one-step method to prepare the honeycomb structured combustion catalyst; the whole preparation process is completed under the conditions of normal pressure and low temperature, the required equipment is very simple, and the whole preparation process is also very simple and convenient; in the platinum-based structured catalyst prepared by the method, the platinum active component particles are a platinum active component thin layer with the thickness of micron which is directly precipitated on the surface of the aluminum metal honeycomb substrate in situ, so that the platinum component is firmly loaded on the surface of the aluminum metal honeycomb substrate, and the phenomena of peeling and falling off do not occur in a bending test and an adhesive tape test. Although the content of the noble metal platinum in the prepared platinum-based regular catalyst is only 0.05wt% -0.5wt%, when the catalyst is used for catalytic combustion purification of VOCs, the removal rate of the VOCs can reach over 90% at a lower temperature of 180 ℃, and an excellent low-temperature catalytic purification effect is shown.
Detailed Description
The idea of the invention and the resulting technical effects will be clearly and completely described below in connection with the embodiments, so that the objects, features and effects of the invention can be fully understood. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts are within the protection scope of the present invention based on the embodiments of the present invention.
Example 1
The embodiment prepares a platinum-based structured catalyst, and the specific process comprises the following steps:
firstly, aluminum metal honeycomb substrate is firstly treated with 0.01mmol/L of PdCl 2 Soaking in activating solution at 40 deg.C for 2min, taking out, and washing with distilled water; placing the activated aluminum metal honeycomb substrate in 0.1mmol/L H 2 PtCl 6 50mmol/L concentrated ammonia water, 10mmol/L disodium ethylene diamine tetraacetate, 20mmol/L anhydrous ethylenediamine, 30mmol/L concentrated ammonia waterSoaking in a chemical auto-deposition mixed solution prepared from mmol/L sodium hypophosphite and 30mmol/L sodium borohydride for 10h at 50 ℃, taking out, and washing with distilled water; and drying the catalyst sample subjected to chemical autodeposition at 80 ℃ for 10h, and roasting at 600 ℃ for 3h in air atmosphere to obtain the platinum-based regular catalyst with the mass percentage content of the noble metal platinum of 0.05 wt%.
Example 2
This example prepares a platinum-based structured catalyst, and the specific process is as follows:
firstly, an aluminum metal honeycomb substrate is firstly added with 0.01mmol/L PdCl 2 Soaking in activating solution at 40 deg.C for 4min, taking out, and washing with distilled water; placing the activated aluminum metal honeycomb substrate in 0.2mmol/L H 2 PtCl 6 Soaking the mixture in a chemical auto-deposition mixed solution prepared from 60mmol/L concentrated ammonia water, 20mmol/L disodium ethylene diamine tetraacetate, 10mmol/L anhydrous ethylenediamine, 40mmol/L sodium hypophosphite and 40mmol/L sodium borohydride for 10 hours at 50 ℃, taking out the mixture and washing the mixture by using distilled water; and drying the catalyst sample subjected to chemical autodeposition at 80 ℃ for 10 hours, and roasting the catalyst sample at 400 ℃ for 10 hours in an air atmosphere to obtain the platinum-based regular catalyst with the precious metal platinum content of 0.10 wt%.
Example 3
This example prepares a platinum-based structured catalyst, and the specific process is as follows:
soaking an aluminum metal honeycomb substrate in 0.02mmol/L PdCl2 activating solution at 40 ℃ for 10min, taking out and washing the aluminum metal honeycomb substrate with distilled water; placing the activated aluminum metal honeycomb substrate in 0.6mmol/L H 2 PtCl 6 Soaking the materials in a chemical auto-deposition mixed solution prepared from 160mmol/L concentrated ammonia water, 40mmol/L disodium ethylene diamine tetraacetate, 40mmol/L anhydrous ethylenediamine, 60mmol/L sodium hypophosphite and 50mmol/L sodium borohydride for 2 hours at 70 ℃, taking out the materials, and washing the materials with distilled water; and drying the catalyst sample subjected to chemical autodeposition at 80 ℃ for 10h, and roasting the catalyst sample at 300 ℃ for 3-10h in an air atmosphere to obtain the platinum-based regular catalyst with the noble metal platinum content of 0.30 wt%.
Example 4
This example prepares a platinum-based structured catalyst, and the specific process is as follows:
firstly, aluminum metal honeycomb substrate is firstly subjected to 0.03mmol/L of PdCl 2 Soaking in activating solution at 40 deg.C for 5min, taking out, and washing with distilled water; placing the activated aluminum metal honeycomb substrate in H of 1.0mmol/L 2 PtCl 6 Soaking the mixture in a chemical auto-deposition mixed solution prepared from 200mmol/L concentrated ammonia water, 50mmol/L disodium ethylene diamine tetraacetate, 50mmol/L anhydrous ethylenediamine, 80mmol/L sodium hypophosphite and 80mmol/L sodium borohydride for 10 hours at 20 ℃, taking out the mixture and washing the mixture by using distilled water; and drying the catalyst sample subjected to chemical autodeposition at 80 ℃ for 10h, and roasting the catalyst sample at 400 ℃ for 8h in an air atmosphere to obtain the platinum-based regular catalyst with the noble metal platinum mass percentage of 0.50wt%.
Test examples
The platinum-based structured catalyst samples of examples 1 to 4 were subjected to bending test and adhesive tape test to test the load firmness of the precious metal platinum component on the surface of the aluminum metal honeycomb substrate carrier.
The bending test is to observe the peeling condition of the bending part after the sample is bent by 180 degrees; the adhesive tape test is that the 3M adhesive tape is uniformly pressed on the surface of a sample, then the free end of the adhesive tape is grasped, the adhesive tape is quickly pulled away in the direction of forming an angle of 180 degrees with the surface of the sample, and the falling-off condition of a coating on the adhesive tape is observed.
The platinum-based regular catalyst samples of examples 1-4 were subjected to a probe reaction with toluene catalytic purification as evaluation of VOCs purification performance, at a toluene inlet concentration of 1.0g/m 3 Airspeed of 10000h -1 The catalytic purification performance was evaluated under the conditions. The reaction temperature T when the removal rate of VOCs reaches 90 percent 90 As a criterion for evaluating catalytic cleaning performance, T 90 Lower indicates higher purification performance of the catalyst for VOCs.
The results of the bending test and the adhesive tape test of the structured catalysts obtained in examples 1 to 4, and the evaluation results thereof for the catalytic purification performance of VOCs are shown in Table 1.
TABLE 1 evaluation of VOCs catalytic purification Performance and adhesion firmness of platinum-based regular catalysts
| Examples | Platinum loading/wt. -%) | T 90 /℃ | Bending test | Adhesive tape test |
| 1 | 0.05 | 179 | Without peeling | Without falling off |
| 2 | 0.10 | 169 | Without peeling | Without falling off |
| 3 | 0.30 | 153 | Without peeling | Without falling off |
| 4 | 0.50 | 141 | Without peeling | Without falling off |
The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A preparation method of a platinum-based structured catalyst is characterized by comprising the following steps:
s1: placing an aluminum metal honeycomb substrate in PdCl 2 Soaking in the activating solution to obtain an activated aluminum metal honeycomb substrate;
s2: placing the activated aluminum metal honeycomb substrate in a chamber consisting of H 2 PtCl 6 Soaking in a chemical self-deposition mixed solution prepared from concentrated ammonia water, disodium ethylene diamine tetraacetate, anhydrous ethylenediamine, sodium hypophosphite and sodium borohydride to obtain a catalyst intermediate product;
s3: and drying and carrying out aerobic roasting on the catalyst intermediate product to obtain the platinum-based regular catalyst.
2. The method according to claim 1, wherein the PdCl is used in step S1 2 The concentration of the activating solution is 0.01-0.03mmol/L.
3. The method according to claim 1, wherein the soaking temperature is 35-45 ℃ and the soaking time is 2-10min in step S1.
4. The method according to claim 1, wherein in step S2, H is contained in the mixed solution for chemical auto-deposition 2 PtCl 6 The concentration of the sodium hypophosphite is 0.1-1.0mmol/L, the concentration of the concentrated ammonia water is 50-200mmol/L, the concentration of the ethylene diamine tetraacetic acid is 10-50mmol/L, the concentration of the anhydrous ethylenediamine is 10-50mmol/L, the concentration of the sodium hypophosphite is 30-80mmol/L, and the sodium borohydride is sodium borohydrideThe concentration of (A) is 30-80mmol/L.
5. The method according to claim 1, wherein the soaking temperature in step S2 is 20-70 ℃ and the soaking time is 2-10h.
6. The method according to claim 1, wherein the drying temperature is 70-90 ℃ and the drying time is 5-10 hours in step S3.
7. The method according to claim 1, wherein in step S3, the roasting temperature is 300-600 ℃ and the roasting time is 3-10h.
8. The method according to claim 1, wherein in step S3, the atmosphere of the firing is air.
9. The preparation method according to claim 1, wherein the mass percentage content of the noble metal platinum in the platinum-based structured catalyst is 0.05wt% -0.50wt%.
10. Use of the platinum-based structured catalyst prepared by the preparation method according to any one of claims 1 to 9 for the catalytic purification of VOCs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211463890.0A CN115739076A (en) | 2022-11-22 | 2022-11-22 | Preparation method and application of platinum-based regular catalyst for catalytic purification of VOCs (volatile organic compounds) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211463890.0A CN115739076A (en) | 2022-11-22 | 2022-11-22 | Preparation method and application of platinum-based regular catalyst for catalytic purification of VOCs (volatile organic compounds) |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010044002A (en) * | 2001-01-19 | 2001-05-25 | 김충섭 | Honeycomb type monolithic catalyst for removing VOCs |
| CN102179256A (en) * | 2011-03-17 | 2011-09-14 | 广东工业大学 | Preparation method and use of palladium-based cellular integrated combustion catalyst |
| CN102513130A (en) * | 2011-12-05 | 2012-06-27 | 广东工业大学 | Preparation method and application of integral combustion catalyst for platinum-based honeycomb iron-chrome-aluminium wire mesh |
| CN111054329A (en) * | 2019-11-25 | 2020-04-24 | 广东工业大学 | Aluminum-supported noble metal monolithic catalyst and preparation method and application thereof |
| CN113680390A (en) * | 2021-07-29 | 2021-11-23 | 佛山市顺德区金磊环保科技有限公司 | Foam material with formaldehyde purification function and preparation method and application thereof |
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2022
- 2022-11-22 CN CN202211463890.0A patent/CN115739076A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010044002A (en) * | 2001-01-19 | 2001-05-25 | 김충섭 | Honeycomb type monolithic catalyst for removing VOCs |
| CN102179256A (en) * | 2011-03-17 | 2011-09-14 | 广东工业大学 | Preparation method and use of palladium-based cellular integrated combustion catalyst |
| CN102513130A (en) * | 2011-12-05 | 2012-06-27 | 广东工业大学 | Preparation method and application of integral combustion catalyst for platinum-based honeycomb iron-chrome-aluminium wire mesh |
| CN111054329A (en) * | 2019-11-25 | 2020-04-24 | 广东工业大学 | Aluminum-supported noble metal monolithic catalyst and preparation method and application thereof |
| CN113680390A (en) * | 2021-07-29 | 2021-11-23 | 佛山市顺德区金磊环保科技有限公司 | Foam material with formaldehyde purification function and preparation method and application thereof |
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