CN101249436A - Stainless steel cloth anodized film metallic honeycomb process for preparation of catalysts - Google Patents
Stainless steel cloth anodized film metallic honeycomb process for preparation of catalysts Download PDFInfo
- Publication number
- CN101249436A CN101249436A CNA2008100597784A CN200810059778A CN101249436A CN 101249436 A CN101249436 A CN 101249436A CN A2008100597784 A CNA2008100597784 A CN A2008100597784A CN 200810059778 A CN200810059778 A CN 200810059778A CN 101249436 A CN101249436 A CN 101249436A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- steel cloth
- oxide film
- preparation
- carrier
- 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
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 59
- 239000010935 stainless steel Substances 0.000 title claims abstract description 57
- 239000003054 catalyst Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000004744 fabric Substances 0.000 title claims description 39
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 20
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 8
- 238000007598 dipping method Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 22
- 239000000428 dust Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 239000012018 catalyst precursor Substances 0.000 claims description 5
- 239000008151 electrolyte solution Substances 0.000 claims description 5
- 238000005470 impregnation Methods 0.000 claims description 5
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 230000003213 activating effect Effects 0.000 claims 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 5
- 239000010815 organic waste Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000001413 cellular effect Effects 0.000 description 8
- 239000012528 membrane Substances 0.000 description 5
- 239000010970 precious metal Substances 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000010407 anodic oxide Substances 0.000 description 2
- 238000007743 anodising Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Catalysts (AREA)
Abstract
A method for preparing stainless steel screen anode oxide film metal honeycomb catalyst adopts stainless steel screen with composite oxide film coated on the surface as a carrier, and noble metal platinum and palladium as active components. The contents of platinum and palladium in active components are respectively 0.1wt% and 0.5 wt%. An anode oxidation preparation process is adopted to form the anode oxide film. A method of dipping is adopted to load noble metal active components. The catalyst is used for treating volatile organic waste gas (toluene, acetone, ethyl acetate, etc.), which has high activity, heat stability and application prospect.
Description
Technical field
The present invention relates to a kind of catalyst that is used to handle volatile organic waste gas, mainly is about stainless steel cloth anodized film metallic carrier-supported precious metal Catalysts and its preparation method.
Technical background
Because stainless steel cloth has heat-resisting quantity, easily is processed into advantages such as different shape, can be used as a kind of novel catalyst carrier.Make stainless steel wire form one deck on the net by the anodizing technology process from growing oxide-film, the catalyst of carried noble metal preparation can overcome the poor heat stability that in the past adopted the activated alumina carried noble metal to make ceramic catalyst then, shortcoming such as frangible is a kind of catalyst with application prospect.
Chinese patent ZL 03 129367.0 and 200710067768.0 relates to a kind of stainless steel anode oxide film supported precious metal catalyst preparation method, the steps include: electrochemical deoiling, descale is handled, remove dust and handle, pre-activated is handled, anodized, obtain stainless steel anode oxide film, the carried noble metal active component, active high, high temperature resistant, shock-resistant, the anti-vibration of above-mentioned two kinds of stainless steel anode oxide film supported precious metal catalysts, Heat stability is good.Problems such as but it is narrow to exist the carrier application surface, and preparation process is many.
Summary of the invention
The present invention seeks on above-mentioned two Chinese patent bases, to improve, optimize preparation technology and condition, provide different stainless steel metal silk screen carriers anodic oxide film supported Nobel-metal catalyst preparation method.
The present invention adopts anodizing technology to form oxide-film on the net at stainless steel wire to make metal beehive carrier, and the Preparation of catalysts method of carried noble metal is used to handle volatile organic waste gas then.
Stainless steel cloth anodized film metallic honeycomb catalyst provided by the invention is to be carrier with surface attachment complex oxide film stainless steel cloth, is active component with noble metal platinum and palladium, and it is 0.1wt% that the activity of such catalysts component contains Pt, and containing Pd is 0.5wt%.
Stainless steel cloth anodized film metallic honeycomb Preparation of catalysts method provided by the invention is a carrier with the stainless steel cloth, adopts anodic oxidation preparation technology to form anode oxide film, adopts dipping method carried noble metal active component, is prepared into catalyst.The steps include:
● anodic oxidation film preparation: stainless steel cloth is processed into required specification, makes cellularly, silk screen is carried out descale handle; The silk screen carrier is removed dust to be handled; Silk screen carrier pre-activated is handled; The silk screen carrier is immersed in the electrolyte solution fully, carries out anodized, obtain the complex oxide film of surface compact;
● the carried noble metal active component: with the stainless steel cloth anodized film carrier impregnation in chloroplatinic acid that contains noble metal 0.1wt%Pt, 0.5wt%Pd and chlorine palladium acid solution, boil, treat solution colour by yellow transfer to colourless after, stainless steel carrier is taken out, clean, placing concentration is that 1h is reduced in the agent of 0.1wt% hydrazine hydrate reduction;
● with the catalyst precursor of above-mentioned stainless steel anode oxide film carried noble metal, be roasting in the 500-800 ℃ of air atmosphere in temperature, roasting time is 1 hour, can obtain 0.1%Pt-0.5%Pd/ stainless steel cloth anodized film metallic honeycomb catalyst.
Descale of the present invention is handled: stainless steel cloth is processed into required specification, makes cellularly, be immersed in volume ratio and be: 26: 1: 1: 1: 1 H
2O, H
2SO
4, HCl, C
2H
5OH, H
2O
2And an amount of (CH)
6N
4Solution in, reaction temperature is a room temperature, under stirring the stainless steel cloth carrier is immersed in the above-mentioned solution, the time is 1.0-3.0 minute.
The dust of removing of the present invention is handled: place volume ratio to be the stainless steel cloth of descale: 2: 1 HNO
3, H
2O
2In the solution, room temperature condition stirred dipping 1.0-3.0 minute down.HNO
3, H
2O
2, H
2O; The liquor capacity ratio is: 1: 0.5: 32.
Pre-activated of the present invention is handled: will be immersed in volume ratio except that the stainless steel cloth of dust is: 10: 1 H
2SO
4, in the HCl solution 0.5-1.0 minute.
Anodized of the present invention: pretreated stainless steel cloth is completely infused in the H that concentration is 10wt%
2SO
4In the electrolyte solution, current density is 10.0-1.0A/dm
2, voltage is 3.0-5.0V, the time is 30 minutes, obtains the anodic oxidation membrane carrier.
The present invention utilizes stainless steel cloth to have high stability and has good heat-conducting, and easily be processed into advantages such as different shape, processing through anode oxidation process, the surface forms the metal honeycomb catalyst of making of complex oxide film back loading active component, be used to handle volatile organic waste gas (as toluene, acetone, ethyl acetate etc.).
0.1%Pt-0.5%Pd/ stainless steel cloth combined oxidation film metal honeycomb catalyst has the advantage of active height, Heat stability is good; after 500 ℃ of temperature calcination process; complete conversion temperature to toluene is 220 ℃; complete conversion temperature to acetone is 260 ℃; complete conversion temperature to ethyl acetate is 280 ℃; in similar catalysts for environmental protection, has wide market application prospect.
The present invention with authorize Chinese patent (ZL 03 129367.0) and Chinese patent (application number: 200710067768.0) compare openly, be extended to different stainless steel metal silk screen carriers, because this stainless steel metal silk screen price is low, resource is many, draw materials extensively, the catalyst activity height that makes has great economy and realistic meaning.
The specific embodiment
Embodiment 1
Specific embodiment of the preparation of stainless steel anode oxide film supported precious metal catalyst the steps include:
● stainless steel cloth is processed into required specification, makes cellularly, be immersed in H
2O, H
2SO
4, HCl, C
2H
5OH, H
2O
2And an amount of (CH)
6N
4Solution in, carry out descale and handle.Above-mentioned liquor capacity ratio is: 26: 1: 1: carry out descale at 1: 1, reaction temperature is a room temperature, under stirring the stainless steel cloth carrier is immersed in the above-mentioned solution, and the time is 1.0-3.0 minute.
● the stainless steel cloth of descale is placed HNO
3, H
2O
2In the solution, above-mentioned solution body volume ratio is: remove dust at 2: 1, reaction temperature is a room temperature, and stirring dip time is 1.0-3.0 minute.
● will be immersed in H except that the stainless steel cloth of dust
2SO
4, in the HCl solution, volume ratio is: carry out pre-activated at 10: 1 and handle, the time is 0.5-1.0 minute.
● pretreated stainless steel cloth is completely infused in the H that concentration is 10wt%
2SO
4In the electrolyte solution, current density is 10.0-1.0A/dm
2, voltage is 3.0-5.0V, the time is 30 minutes, obtains the anodic oxidation membrane carrier.
● with the stainless steel cloth anodized film carrier impregnation in chloroplatinic acid that contains noble metal 0.1wt%Pt, 0.5wt%Pd and chlorine palladium acid solution, boil, treat solution colour by yellow transfer to colourless after, stainless steel carrier is taken out, clean, placing reducing agent is that hydrazine hydrate (concentration is 0.1wt%) reduces, and the described recovery time is 1h.
● with the catalyst precursor of above-mentioned stainless steel anode oxide film carried noble metal, in temperature is roasting in the 500-800 ℃ of air atmosphere, roasting time is 1 hour, can obtain 0.1%Pt-0.5%Pd/ stainless steel cloth anodized film metallic honeycomb catalyst of the present invention.
Embodiment 2:
Specific embodiment of the preparation of stainless steel screen anodic oxide film supported noble metal catalyst the steps include:
● stainless steel cloth is processed into certain specification, makes cellular.
● then cellular silk screen carrier is carried out descale and handle: press H
2O, H
2SO
4, HCl, C
2H
5OH, (CH)
6N
4, H
2O
2Order, add 390ml H successively
2O, 15ml H
2SO
4, 15ml HCl, 15ml C
2H
5OH, an amount of (CH)
6N
4, 15ml H
2O
2, wiring solution-forming.Cellular silk screen carrier is immersed in the above-mentioned solution, and dipping is 2 minutes under stirring, cleans with deionized water.
● the cellular silk screen carrier of descale removes the dust processing: place to contain 30ml HNO
3, 15ml H
2O
2, 955ml H
2In the mixed solution of O, stirring flooded 1 minute down, cleaned with deionized water.
● cellular stainless steel carrier placed contain 10ml H
2SO
4, 1ml HCl mixed solution in, pre-activated was handled 1 minute.
● will activate pretreated cellular silk screen carrier and be immersed in 500ml H fully
2SO
4In (concentration is 10wt%) electrolyte solution, control reaction time and reaction temperature are carried out anodic oxidation, after 30 minutes, stainless steel carrier are taken out, rinse well with deionized water, and 100 ℃ of oven dry, standby.
● the cellular silk screen carrier that will prepare, immersion contains in the chloroplatinic acid and chlorine palladium acid solution of noble metal 0.1wt%Pt, 0.5wt%Pd, boil, treat solution colour by yellow transfer to colourless after, the silk screen carrier is taken out, clean, soak and place the 0.1wt% hydrazine hydrate solution, take out behind the 1h, clean, oven dry gets catalyst precursor.
● with the roasting 1 hour under 500 ℃ of air atmosphere conditions of this catalyst precursor, make catalyst.
Cellular stainless steel cloth carrier-supported precious metal of the present invention is made catalyst, through 500-800 ℃ of temperature calcination process, it is very fine and close evenly that catalyst surface is formed oxide-film, the composite oxides particle diameter that forms still remains on micron order, is used to handle organic exhaust gas and has higher activity, heat endurance.
Embodiment 3
Anodic oxidation membrane preparation method descale formula of liquid of the present invention
| Reagent | Concentration (ml/l) |
| H 2O | 390 |
| HCl H 2SO 4 H 2O 2 C 2H 5OH (CH) 6N 4 | 15 15 15 15 is an amount of |
Embodiment 4
Anodic oxidation membrane preparation method of the present invention removes the dust formula of liquid
| Reagent | Concentration (ml/l) |
| HNO 3 H 2O 2 H 2O | 30 15 955 |
Embodiment 5
Anodic oxidation membrane preparation method pre-activated prescription for the treatment of liquid of the present invention
| Reagent | Concentration (ml/l) |
| H 2SO 4 HCl | 10 1 |
Claims (5)
1, a kind of stainless steel cloth anodized film metallic honeycomb Preparation of catalysts method, it is characterized in that with surface attachment complex oxide film stainless steel cloth be carrier, with noble metal platinum and palladium is active component, it is 0.1wt% that the activity of such catalysts component contains Pt, containing Pd is 0.5wt%, adopt anodic oxidation preparation technology to form anode oxide film, adopt dipping method carried noble metal active component, the steps include:
● anodic oxidation film preparation: stainless steel cloth is processed into required specification, makes cellularly, the silk screen carrier is carried out descale handle, remove that dust is handled, pre-activated is handled, anodized, obtain the complex oxide film of surface compact;
● the carried noble metal active component: with the stainless steel cloth anodized film carrier impregnation in chloroplatinic acid that contains noble metal 0.1wt%Pt, 0.5wt%Pd and chlorine palladium acid solution, boil, treat solution colour by yellow transfer to colourless after, stainless steel carrier is taken out, clean, placing concentration is that 1h is reduced in the agent of 0.1wt% hydrazine hydrate reduction;
● with the catalyst precursor of above-mentioned stainless steel anode oxide film carried noble metal, be roasting in the 500-800 ℃ of air atmosphere in temperature, roasting time is 1 hour, can obtain 0.1%Pt-0.5%Pd/ stainless steel cloth anodized film metallic honeycomb catalyst.
2, stainless steel cloth anodized film metallic honeycomb Preparation of catalysts method according to claim 1 is characterized in that described stainless steel cloth carries out the descale Treatment Solution and is: H
2O, H
2SO
4, HCl, C
2H
5OH, H
2O
2And an amount of (CH)
6N
4Mixed solution, the liquor capacity ratio is: 26: 1: 1: 1: 1, reaction temperature was a room temperature, under stirring, the stainless steel cloth carrier impregnation time is 1.0-3.0 minute.
3, stainless steel cloth anodized film metallic honeycomb Preparation of catalysts method according to claim 1 is characterized in that the dust solution composition that removes among the described anode oxide film preparation technology is: HNO
3, H
2O
2, H
2O; The liquor capacity ratio is: 1: 0.5: 32, reaction temperature was a room temperature, and under stirring, the stainless steel cloth carrier impregnation time is 1.0-3.0 minute.
4, stainless steel cloth anodized film metallic honeycomb Preparation of catalysts method according to claim 1 is characterized in that pre-activated Treatment Solution composition is H among the described anode oxide film preparation technology
2SO
4, HCl, the liquor capacity ratio is: 10: 1, activating the pretreated time was 0.5-1.0 minute.
5, stainless steel cloth anodized film metallic honeycomb Preparation of catalysts method according to claim 1 is characterized in that electrolyte solution is H among the described anode oxide film preparation technology
2SO
4, current density is 10.0-1.0A/dm
3,, voltage is 3.0-5.0V, the time is 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100597784A CN101249436A (en) | 2008-02-27 | 2008-02-27 | Stainless steel cloth anodized film metallic honeycomb process for preparation of catalysts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100597784A CN101249436A (en) | 2008-02-27 | 2008-02-27 | Stainless steel cloth anodized film metallic honeycomb process for preparation of catalysts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101249436A true CN101249436A (en) | 2008-08-27 |
Family
ID=39953135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100597784A Pending CN101249436A (en) | 2008-02-27 | 2008-02-27 | Stainless steel cloth anodized film metallic honeycomb process for preparation of catalysts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101249436A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2014177031A1 (en) * | 2013-05-03 | 2014-11-06 | 南京德磊科技有限公司 | Special palladium catalyst for sewage treatment and use thereof |
| CN106512991A (en) * | 2016-10-28 | 2017-03-22 | 北京石油化工学院 | Preparation method for supported noble metal catalyst |
| CN108754580A (en) * | 2018-06-25 | 2018-11-06 | 华北电力大学（保定） | The surface modified stainless steel of in-situ deposition nanometer pt a kind of and its application |
| CN109351182A (en) * | 2018-11-27 | 2019-02-19 | 蓝天环保设备工程股份有限公司 | A kind of Sinter-plate Filter with VOCs remove |
-
2008
- 2008-02-27 CN CNA2008100597784A patent/CN101249436A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102179256B (en) * | 2011-03-17 | 2012-12-12 | 广东工业大学 | Preparation method and use of palladium-based cellular integrated combustion catalyst |
| WO2014177031A1 (en) * | 2013-05-03 | 2014-11-06 | 南京德磊科技有限公司 | Special palladium catalyst for sewage treatment and use thereof |
| CN106512991A (en) * | 2016-10-28 | 2017-03-22 | 北京石油化工学院 | Preparation method for supported noble metal catalyst |
| CN108754580A (en) * | 2018-06-25 | 2018-11-06 | 华北电力大学（保定） | The surface modified stainless steel of in-situ deposition nanometer pt a kind of and its application |
| CN108754580B (en) * | 2018-06-25 | 2019-08-20 | 华北电力大学（保定） | The surface modified stainless steel of in-situ deposition nanometer pt a kind of and its application |
| CN109351182A (en) * | 2018-11-27 | 2019-02-19 | 蓝天环保设备工程股份有限公司 | A kind of Sinter-plate Filter with VOCs remove |
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Open date: 20080827 |