CN106362740A - Catalyst for automobile exhaust purifier - Google Patents
Catalyst for automobile exhaust purifier Download PDFInfo
- Publication number
- CN106362740A CN106362740A CN201610774532.XA CN201610774532A CN106362740A CN 106362740 A CN106362740 A CN 106362740A CN 201610774532 A CN201610774532 A CN 201610774532A CN 106362740 A CN106362740 A CN 106362740A
- Authority
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- China
- Prior art keywords
- coating
- catalyst
- automobile exhaust
- coated
- exhaust purifier
- 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.)
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- 239000003054 catalyst Substances 0.000 title claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 49
- 238000000576 coating method Methods 0.000 claims abstract description 49
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004411 aluminium Substances 0.000 claims description 22
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- KKMPSGJPCCJYRV-UHFFFAOYSA-N Nitidine Chemical compound C1=C2C3=[N+](C)C=C4C=C(OC)C(OC)=CC4=C3C=CC2=CC2=C1OCO2 KKMPSGJPCCJYRV-UHFFFAOYSA-N 0.000 description 8
- 239000006255 coating slurry Substances 0.000 description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000000498 ball milling Methods 0.000 description 4
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003915 air pollution Methods 0.000 description 3
- 241000256844 Apis mellifera Species 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- VXNYVYJABGOSBX-UHFFFAOYSA-N rhodium(3+);trinitrate Chemical compound [Rh+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VXNYVYJABGOSBX-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- -1 rationally Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
- B01D53/565—Nitrogen oxides by treating the gases with solids
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
-
- 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
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/63—Platinum group metals with rare earths or actinides
-
- B01J35/56—
-
- B01J35/635—
-
- 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
- B01J37/0215—Coating
- B01J37/0228—Coating in several steps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
- F01N2510/0684—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having more than one coating layer, e.g. multi-layered coatings
-
- 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 an automobile exhaust purifier. The catalyst comprises a honeycomb aluminum block carrier which has pore density of 550 cpsi, porous channel wall thickness of 3.8mil and volume of 0.85L; the honeycomb aluminum block carrier is coated with a Pd coating, and the coating amount of the Pd coating is 120g/L; the Pd coating is coated with an Rh coating, and the coating amount of the Rh coating is 85g/L; the content of Pd of the Pd coating is 80g/ft<3>, and the content of Rh of the Rh coating is 15g/ft<3>. By reasonably designing coating elements and the proportion, the Pd and the Rh loaded in the catalyst are enabled to have very high high-temperature aging resistance, so that the catalytic efficiency is remarkably improved, and the service life is remarkably prolonged.
Description
Technical field
The present invention relates to auto industry technical field, more particularly, to a kind of automobile exhaust purifier catalyst.
Background technology
Raising quality of life being required with expanding economy and people, air pollution problems inherent has become as and receives much attention
Global problem.The wide range of haze event of domestic frequent generation carries to the Treatment process of air pollution and purifier structure
Go out higher requirement.Automobile pollution is under the trend increasing year by year at home, as air pollutants important sources it
One vehicle exhaust has important impact to air pollution.
The exhaust gas component that automobile is discharged mainly has Hydrocarbon, oxynitride, carbon monoxide, granulated carbon etc., most
The concentration of tail gas has reached the degree to harm, and current automobile exhaust purifier clean-up effect is single, to tail gas
Clean-up effect is limited, and complex structure, relatively costly.Therefore, it is necessary to provide a kind of automobile exhaust purifier, above-mentioned to solve
Problem.
Cleaning catalyst for tail gases of automobiles mainly adopts ternary catalyst systems, and three-way catalyst is made up of two parts: honeycomb
The pottery of shape or metallic carrier, and it is attached to supported catalyst coating.Catalyst coat generally larger compares table by having
The inorganic oxide material of area is (as γ-al2o3And ceo2Deng) and be supported on oxide surface noble metal active component (often
For one or more of pt (platinum), pd (palladium), rh (rhodium)) composition.Existing cleaning catalyst for tail gases of automobiles is primarily present urges
Change that efficiency is low, the defect such as service life is short.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of automobile exhaust purifier, net with the vehicle exhaust that solves current
Change single, limited to the clean-up effect of tail gas, and complex structure, the relatively costly problem of device clean-up effect.Meanwhile, the present invention goes back
Provide a kind of automobile exhaust purifier catalyst and its coating processing method.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of automobile exhaust purifier, comprising: clean room that air inlet is connected with described air inlet and with described clean room even
Logical gas outlet；The internal position near described air inlet in described clean room is provided with honeycomb aluminium block；Described clean room is internal close
The position of described gas outlet is provided with ternary catalyzing unit；The side of described clean room internal duct is provided with ozonator；Described honeybee
There is inside nest aluminium block the hole being interconnected, the hole wall of described hole is coated with catalyst.
Described honeycomb aluminium block is detachably connected with the inwall of described clean room.
The side of described ozonator is provided with fan.
Automobile exhaust purifier catalyst, including honeycomb aluminium block carrier, hole density is 550cpsi, and duct wall thickness is
3.8mil, volume is 0.85l；Pd coating is coated with honeycomb aluminium block carrier, the coated weight of pd coating is 120g/l；Apply in pd
Rh coating is coated with layer, the coated weight of rh coating is 85g/l；Wherein, in pd coating, the content of pd is 80g/ft3, rh coating
The content of middle rh is 15g/ft3.
The coating processing method of automobile exhaust purifier catalyst, step is as follows:
1. coat pd coating
Zro by 84g2, the pr of 36g6o11, the la of 7.2g2o3, γ-the al of 82.8g2o3, the nitidine of 3g and going in right amount
Ionized water ball milling mixing, then 5g Palladous nitrate. is added thereto mix homogeneously obtains coating slurry a；Then according to the coating of 120g/l
Coating slurry painting a is layed onto on honeycomb aluminium block carrier amount, and finally roasting 6 hours at 650 DEG C, obtain pd coating；
2. coat rh coating
Zro by 76.5g2, the y of 13.5g2o3, the ceo of 4g2, the la of 4g2o3, γ-the al of 96g2o3, 2g nitidine and
Appropriate amount of deionized water ball milling mixing, then 0.5g rhodium nitrate is added thereto mix homogeneously obtains coating slurry b；Then according to 85g/
Coating slurry b is coated on the honeycomb aluminium block carrier having been coated with pd coating by the coated weight of l, and finally at 650 DEG C, roasting 6 is little
When, obtain rh coating, thus automobile exhaust purifier catalyst is obtained.
Advantage for present invention with effect is:
1), the automobile exhaust purifier of the present invention, comprising: clean room that air inlet is connected with described air inlet and with described
The gas outlet of clean room's connection；The internal position near described air inlet in described clean room is provided with honeycomb aluminium block；Described clean room
The internal position near described gas outlet is provided with ternary catalyzing unit；The side of described clean room internal duct is provided with ozone and occurs
Device；There is inside described honeycomb aluminium block the hole being interconnected, the hole wall of described hole is coated with catalyst；Can successively pass through
Honeycomb aluminium block, ozonator and ternary catalyzing unit carry out catalytic purification to vehicle exhaust, the effectively purification to tail gas for the lifting
Effect, structure is simple, and cost is relatively low.
2), automobile exhaust purifier catalyst, by appropriate design coating element and proportioning, can make catalyst load
Pd and rh has very high high-temperature aging resisting ability, thus realize catalytic efficiency be obviously improved and service life notable
Extend.
3), the coating processing method of automobile exhaust purifier catalyst, rationally, coating efficiency is high, can be bright for technological design
The aobvious shortening production time.
Brief description
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the automobile exhaust purifier of the present invention；
Fig. 2 is the schematic diagram of the honeycomb aluminium block of automobile exhaust purifier of the present invention.
In figure: air inlet 1, clean room 2, gas outlet 3, honeycomb aluminium block 21, ternary catalyzing unit 23, ozonator 22, hole
Hole 210, fan 24.
Specific embodiment
Embodiment 1
As shown in Figure 1 to Figure 2, the present invention provides a kind of automobile exhaust purifier, comprising: air inlet 1 is connected with air inlet 1
Clean room 2 and the gas outlet 3 connecting with clean room 2.Vehicle exhaust can enter the purification of automobile exhaust purifier from air inlet 1
Room 2, after the purification of clean room 2, discharges from gas outlet 3.
Specifically, the internal position near air inlet 1 in clean room 2 is provided with honeycomb aluminium block 21, has inside honeycomb aluminium block 21
The hole 210 being interconnected, the hole wall of hole 210 is coated with catalyst, can be by the particulate matter filter deposition in tail gas to honeybee
In the hole 210 of nest aluminium block 21, and catalytic purification is carried out to tail gas by the catalyst covering in hole 210, increase tail gas
With the contact surface area of catalyst, tail gas and catalyst is enable to be fully contacted, excellent catalytic effect.Clean room 2 internal near going out
The position of QI KOU 3 is provided with ternary catalyzing unit 23, harmful gass such as carbon monoxide etc. can be converted into carbon dioxide etc. and be drained into greatly
In gas.The side of clean room 2 internal duct is provided with ozonator 22, can be decomposed by the harmful substance that high frequency oscillation makes tail gas
Become non-toxic gas, thus reaching the purpose of purifying vehicle exhaust.Wherein, honeycomb aluminium block 21 and the inwall of clean room 2 detachably connect
Connect, the side of ozonator 22 is provided with fan 24, during ozonator 22 work, fan 24 and ozonator 22 work simultaneously
Make, the purification efficiency of tail gas can be lifted.
Embodiment 2
Automobile exhaust purifier catalyst, including honeycomb aluminium block carrier, hole density is 550cpsi, and duct wall thickness is 3.8mil,
Volume is 0.85l；Pd coating is coated with honeycomb aluminium block carrier, the coated weight of pd coating is 120g/l；Pd coating applies
It is covered with rh coating, the coated weight of rh coating is 85g/l；Wherein, in pd coating, the content of pd is 80g/ft3, rh in rh coating
Content is 15g/ft3.
Embodiment 3
The coating processing method of automobile exhaust purifier catalyst, step is as follows:
1. coat pd coating
Zro by 84g2, the pr of 36g6o11, the la of 7.2g2o3, γ-the al of 82.8g2o3, the nitidine of 3g and going in right amount
Ionized water ball milling mixing, then 5g Palladous nitrate. is added thereto mix homogeneously obtains coating slurry a；Then according to the coating of 120g/l
Coating slurry painting a is layed onto on honeycomb aluminium block carrier amount, and finally roasting 6 hours at 650 DEG C, obtain pd coating；
2. coat rh coating
Zro by 76.5g2, the y of 13.5g2o3, the ceo of 4g2, the la of 4g2o3, γ-the al of 96g2o3, 2g nitidine and
Appropriate amount of deionized water ball milling mixing, then 0.5g rhodium nitrate is added thereto mix homogeneously obtains coating slurry b；Then according to 85g/
Coating slurry b is coated on the honeycomb aluminium block carrier having been coated with pd coating by the coated weight of l, and finally at 650 DEG C, roasting 6 is little
When, obtain rh coating, thus automobile exhaust purifier catalyst is obtained.
The present invention is not limited to above-described embodiment, and embodiment is exemplary it is intended to be used for explaining the present invention, and can not
It is interpreted as limitation of the present invention.
Claims (1)
1. it is characterised in that including honeycomb aluminium block carrier, hole density is 550cpsi to a kind of automobile exhaust purifier catalyst,
Duct wall thickness is 3.8mil, and volume is 0.85l；Pd coating is coated with honeycomb aluminium block carrier, the coated weight of pd coating is
120g/l；Rh coating is coated with pd coating, the coated weight of rh coating is 85g/l；Wherein, in pd coating, the content of pd is
80g/ft3, in rh coating, the content of rh is 15g/ft3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774532.XA CN106362740A (en) | 2016-08-31 | 2016-08-31 | Catalyst for automobile exhaust purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774532.XA CN106362740A (en) | 2016-08-31 | 2016-08-31 | Catalyst for automobile exhaust purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106362740A true CN106362740A (en) | 2017-02-01 |
Family
ID=57902200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610774532.XA Pending CN106362740A (en) | 2016-08-31 | 2016-08-31 | Catalyst for automobile exhaust purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106362740A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157470A (en) * | 2013-03-15 | 2013-06-19 | 无锡威孚环保催化剂有限公司 | Three-element catalyst for automobile exhaust |
| CN104148068A (en) * | 2014-08-06 | 2014-11-19 | 无锡威孚环保催化剂有限公司 | Three-way catalyst capable of quickly igniting automobile exhaust |
| CN105056946A (en) * | 2015-08-10 | 2015-11-18 | 无锡威孚环保催化剂有限公司 | Quaternary catalyst for in-cylinder direct injection engine and preparation method therefor |
-
2016
- 2016-08-31 CN CN201610774532.XA patent/CN106362740A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157470A (en) * | 2013-03-15 | 2013-06-19 | 无锡威孚环保催化剂有限公司 | Three-element catalyst for automobile exhaust |
| CN104148068A (en) * | 2014-08-06 | 2014-11-19 | 无锡威孚环保催化剂有限公司 | Three-way catalyst capable of quickly igniting automobile exhaust |
| CN105056946A (en) * | 2015-08-10 | 2015-11-18 | 无锡威孚环保催化剂有限公司 | Quaternary catalyst for in-cylinder direct injection engine and preparation method therefor |
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