CN102389811A - Auto exhaust purification catalyst and preparation method thereof - Google Patents
Auto exhaust purification catalyst and preparation method thereof Download PDFInfo
- Publication number
- CN102389811A CN102389811A CN2011103227278A CN201110322727A CN102389811A CN 102389811 A CN102389811 A CN 102389811A CN 2011103227278 A CN2011103227278 A CN 2011103227278A CN 201110322727 A CN201110322727 A CN 201110322727A CN 102389811 A CN102389811 A CN 102389811A
- Authority
- CN
- China
- Prior art keywords
- carrier
- catalyst
- preparation
- vehicle exhaust
- dry
- 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
Images
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
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses an auto exhaust purification catalyst and a preparation method thereof. The catalyst is characterized by being prepared by taking Fe-Mo-W alloy as a carrier and a Ce-Zr-La composite oxide and TiO2 as auxiliaries and loading an active ingredient Pd. The catalyst has higher rate of conversion of NO, CO and HC seriously polluting the air in the auto exhaust without actions of other substances and has low toxicity and high catalytic activity.
Description
Technical field
The present invention relates to a kind of cleaning catalyst that is used for vehicle exhaust and preparation method thereof, is that it is to polluter NO in the vehicle exhaust specifically
X, HC and CO carry out the catalyst and the synthetic technology thereof of integrated treatment.
Background technology
Automobile has become requisite part in our daily life.Automobile has also produced many bad accessory substances bringing us simultaneously easily.Tail gas pollution is exactly one of accessory substance, also is one of main source of atmosphere pollution simultaneously.Most NO in the city
X, CO, HC and CO
2All make CO by vehicle exhaust
2Cause the one of the main reasons of atmosphere pollution and greenhouse effects especially.NO
X, CO, HC not only cause damage but also produce blue photochemical fog under certain conditions human body, makes vegetation dead, the environment of human survival is destroyed.
At present, the major measure of control motor vehicle exhaust emission is to develop the purification techniques of auto-exhaust catalyst efficiently.Currently use maximum auto-exhaust catalysts to be noble metal triple effect catalyst (TWC), noble metal catalyst has higher activity, and big extremely ratio is occupied in tail-gas catalyst market in the world, but itself also has a lot of shortcomings.Have only when the scope of air-fuel ratio is controlled at (14.6 ± 0.3), just can make NO
X, CO and HC detergent power reach maximum, outside this scope, catalytic effect is all relatively poor.Noble metal catalyst was poisoned when elements such as Pb, S, P all were prone to, wherein Pb having the greatest impact to TWC.The price of noble metal is expensive, and the noble metal scarcity of resources also makes the application of TW C and popularization be restricted at present.
Summary of the invention
The objective of the invention is to the costing an arm and a leg of noble metal in the prior art, shortcoming such as toxicity is big provides the little activity of a kind of toxicity higher auto-exhaust catalyst.
Technical scheme of the present invention is: a kind of cleaning catalyst that is used for vehicle exhaust, this catalyst is a carrier with the Fe-Mo-W alloy, Ce-Zr-La composite oxides and TiO
2Be auxiliary agent, supported active composition Pd processes.Described component Ce-Zr-La composite oxides, TiO
2, Pd is 1 ~ 6:2 ~ 5:1 ~ 3 at the load capacity proportion by weight of integer catalyzer.
The preparation method who is used for the cleaning catalyst of vehicle exhaust comprises the steps:
A is with Ce-Zr-La composite oxides and TiO
2According to mass ratio is that the ratio of 1 ~ 6:2 ~ 5 adds the deionized water press amount of the mixture 20% ~ 50%, and in the adding ball grinder, ball milling 3 ~ 6h processes slurry;
B immerses Fe-Mo-W alloy carrier in the slurry, takes out behind 1 ~ 5min, dries, and dries by the fire 3 ~ 6h at a certain temperature;
C is immersed in the PdCl that contains Pd1 ~ 3g/L with the carrier of oven dry
2In the ammonia solution, stir 3 ~ 6h, take out, dry, dry by the fire 3 ~ 6h at a certain temperature;
D immerses KBH with the carrier of oven dry
4In the solution, reaction 10 ~ 50min spends deionised water, at room temperature carries out chemical plating again, and reaction 10 ~ 50min is washed till neutrality with deionized water, at a certain temperature oven dry.
It is short that the present invention has overcome the conventional catalysts life-span, is prone to poison, and confirming of poor stability realized long-acting, stable high, safe.
The present invention has adopted the method for chemical plating, and it is simple that more traditional technology has an equipment, invest lowly, and chemical plating coating is even, and the hardness height resistance to wears, and is corrosion-resistant.
?
Description of drawings
Fig. 1 catalyst is to NO
X, CO and HC conversion ratio be with temperature changing curve diagram.
The specific embodiment
Instance 1 Ce-Zr-La composite oxides, TiO
2Synthetic with the Pd/Fe-Mo-W alloy:
With Ce-Zr-La composite oxides and TiO
2According to mass ratio is the deionized water of the ratio adding of 2:3 by amount of the mixture 30%, adds in the ball grinder, and ball milling 5h processes slurry.The Fe-Mo-W carrier is immersed in the slurry, take out behind the 2min, dry, dry by the fire 4h down at 115 ℃.The carrier of oven dry is immersed in the PdCl that contains Pd2.2g/L
2In the ammonia solution, stir 4h.Take out, dry, dry by the fire 4h at a certain temperature.The carrier of oven dry is immersed KBH
4In the solution, reaction 30min spends deionised water, at room temperature carries out chemical plating again, and reaction 30min is washed till neutrality with deionized water, dries down at 115 ℃ and obtains Ce-Zr-La composite oxides, TiO
2With the Pd/Fe-Mo-W alloy.
Instance 2 catalyst are investigated the catalytic activity of vehicle exhaust:
With the prepared catalyst of instance 1 to the NO in the vehicle exhaust
X, CO and HC conversion ratio investigate.Test is in high temperature reaction stove, to carry out.To contain NO, CO
2, H
2Gaseous mixture feed in the high temperature reaction stove, every min heats up 10 ℃, finally rises to 500 ℃.Experimental result is seen table 1 and Fig. 1.
Table 1
Claims (3)
1. cleaning catalyst that is used for vehicle exhaust is characterized in that it is is carrier with the Fe-Mo-W alloy, Ce-Zr-La composite oxides and γ-Al
2O
3Be auxiliary agent, supported active composition Pd processes; Described component Ce-Zr-La composite oxides, TiO
2, Pd is 1 ~ 6:2 ~ 5:1 ~ 3 at the load capacity proportion by weight of integer catalyzer.
2. the preparation method who is used for the cleaning catalyst of vehicle exhaust according to claim 1 is characterized in that comprising the steps:
A is with Ce-Zr-La composite oxides and TiO
2According to mass ratio is that the ratio of 1 ~ 6:2 ~ 5 adds the deionized water press amount of the mixture 20% ~ 50%, and in the adding ball grinder, ball milling 3 ~ 6h processes slurry;
B immerses Fe-Mo-W alloy carrier in the slurry, takes out behind 1 ~ 5min, dries, and dries by the fire 3 ~ 6h at a certain temperature;
C is immersed in the PdCl that contains Pd1 ~ 3g/L with the carrier of oven dry
2In the ammonia solution, stir 3 ~ 6h, take out, dry, dry by the fire 3 ~ 6h at a certain temperature;
D immerses KBH with the carrier of oven dry
4In the solution, reaction 10 ~ 50min spends deionised water, at room temperature carries out chemical plating again, and reaction 10 ~ 50min is washed till neutrality with deionized water, at a certain temperature oven dry.
3. the preparation method who is used for the cleaning catalyst of vehicle exhaust according to claim 2 is characterized in that: after the d step supported catalyst active ingredient is peeled off into powder or processed solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103227278A CN102389811A (en) | 2011-10-21 | 2011-10-21 | Auto exhaust purification catalyst and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103227278A CN102389811A (en) | 2011-10-21 | 2011-10-21 | Auto exhaust purification catalyst and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102389811A true CN102389811A (en) | 2012-03-28 |
Family
ID=45857266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103227278A Pending CN102389811A (en) | 2011-10-21 | 2011-10-21 | Auto exhaust purification catalyst and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102389811A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570151A (en) * | 2017-10-13 | 2018-01-12 | 金华欧仑催化科技有限公司 | A kind of tai-gas clean-up catalyst and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492685Y (en) * | 2001-08-17 | 2002-05-22 | 王诗昌 | Ternary catalytic automobile tail gas converter |
| CN101003023A (en) * | 2006-01-19 | 2007-07-25 | 清华大学 | Method for preparing catalyst to purify automobile tail gas |
-
2011
- 2011-10-21 CN CN2011103227278A patent/CN102389811A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492685Y (en) * | 2001-08-17 | 2002-05-22 | 王诗昌 | Ternary catalytic automobile tail gas converter |
| CN101003023A (en) * | 2006-01-19 | 2007-07-25 | 清华大学 | Method for preparing catalyst to purify automobile tail gas |
Non-Patent Citations (1)
| Title |
|---|
| 郑向江: "单钯汽车尾气净化催化剂制备及废钯回收", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570151A (en) * | 2017-10-13 | 2018-01-12 | 金华欧仑催化科技有限公司 | A kind of tai-gas clean-up catalyst and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103433057B (en) | Three-way catalyst used for automobile emission purification and preparation method thereof | |
| CN102240560B (en) | Composite catalyst used for catalytic combustion of organic waste gas as well as preparation method and application thereof | |
| CN103157488A (en) | Medium-low-temperature denitrification catalyst taking attapulgite as support for flue gas and preparation method for same | |
| CN101327427B (en) | Use of catalyst in selective catalytic reduction denitration for flue gas and preparation method thereof | |
| CN108479845B (en) | Denitration catalyst and preparation method thereof | |
| CN108722464A (en) | It is a kind of using nitrogen-doped titanium dioxide as Pd triple effect low temperature catalysts of carrier and its preparation method and application | |
| CN102580764B (en) | A kind of Catalysts and its preparation method for purifying nitrogen oxide | |
| CN102407132A (en) | Highly effective cleaning catalyst for automobile tail gas and preparation method thereof | |
| CN102407136A (en) | Vehicle exhaust catalyst containing cordierite honeycomb ceramic and preparation method thereof | |
| CN102389796A (en) | Auto exhaust catalyst containing auxiliary TiO2 and carrier cordierite and preparation method thereof | |
| CN102389811A (en) | Auto exhaust purification catalyst and preparation method thereof | |
| CN102389815A (en) | Auto catalyst containing auxiliary TiO2 and Fe-Mo-W alloy and preparation method thereof | |
| CN102389817A (en) | Tail gas cleaning catalyst for vehicles and preparation method thereof | |
| CN102389813A (en) | Auto exhaust efficient purification catalyst containing auxiliary CuO and preparation method thereof | |
| CN115532304B (en) | Molecular sieve catalyst for ammonia purification of ammonia internal combustion engine, preparation method and application | |
| CN102371164A (en) | Automotive catalyst containing Ce-Zr-Fe-Mn composite oxide and TiO2 auxiliaries and preparation method thereof | |
| CN102407144A (en) | Automobile exhaust catalyst containing Fe-Al-Cr alloy carrier and CuO assistant and preparation method thereof | |
| CN102407134A (en) | Highly effective cleaning catalyst with BaO for automobile tail gas and preparation method thereof | |
| CN102389798A (en) | Automobile high-efficient tail gas cleaning catalyst and preparation method of the same | |
| CN102389816A (en) | Auto catalyst containing auxiliary TiO2 and preparation method thereof | |
| CN102389797A (en) | Auto catalyst and preparation method thereof | |
| CN102389818A (en) | Auto catalyst with high catalytic activity and preparation method thereof | |
| CN102389822A (en) | Auto catalyst containing active ingredient Pd and Fe-Al-Cr alloy, and preparation method thereof | |
| CN102389819A (en) | Auto exhaust catalyst containing carrier cordierite ceramic and auxiliary CuO and preparation method thereof | |
| CN102389812A (en) | Automobile exhaust catalyst containing Fe-Al-Cr alloy and preparation method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120328 |