CN109365007A - A kind of Catalysts for Motorcycles and preparation method thereof and prepare catalyst converter method - Google Patents
A kind of Catalysts for Motorcycles and preparation method thereof and prepare catalyst converter method Download PDFInfo
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- CN109365007A CN109365007A CN201811246701.8A CN201811246701A CN109365007A CN 109365007 A CN109365007 A CN 109365007A CN 201811246701 A CN201811246701 A CN 201811246701A CN 109365007 A CN109365007 A CN 109365007A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- 238000000576 coating method Methods 0.000 claims abstract description 42
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 16
- 239000010948 rhodium Substances 0.000 claims abstract description 16
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 45
- 239000002002 slurry Substances 0.000 claims description 33
- 238000001035 drying Methods 0.000 claims description 31
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 claims description 23
- RCFVMJKOEJFGTM-UHFFFAOYSA-N cerium zirconium Chemical compound [Zr].[Ce] RCFVMJKOEJFGTM-UHFFFAOYSA-N 0.000 claims description 22
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000008367 deionised water Substances 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 229910052593 corundum Inorganic materials 0.000 claims description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 12
- 238000000643 oven drying Methods 0.000 claims description 7
- 229910002651 NO3 Inorganic materials 0.000 claims description 6
- 229910052746 lanthanum Inorganic materials 0.000 claims description 5
- 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 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 4
- 229910052788 barium Inorganic materials 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 229910052703 rhodium Inorganic materials 0.000 abstract description 9
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 abstract description 9
- 238000013028 emission testing Methods 0.000 abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 8
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 4
- 229910000420 cerium oxide Inorganic materials 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical compound [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical group O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical compound [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 description 1
- 229910003447 praseodymium oxide Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 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
- B01J23/38—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
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/396—Distribution of the active metal ingredient
-
- 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
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
-
- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
-
- 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
- F01N3/2807—Metal other than sintered metal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention relates to a kind of Catalysts for Motorcycles, including the first layer being formed in carrier substrates and the second layer on the first layer is formed；Noble metal in catalyst is platinum and rhodium, wherein there was only platinum in first layer coating, and platinum dosage accounts for the 40%~80% of total platinum dosage；Contain platinum and rhodium in second layer coating, wherein platinum dosage is remaining platinum, remaining is rhodium；Catalysts for Motorcycles of the invention and its prepared catalyst converter overall cost are low, simple process, prepared catalyst converter carries out I type emission testing according to GB14622-2016 standard, and CO, THC and NOx emission value can satisfy four emission request of state, and meet the 70% or less of emission limit.
Description
Technical field
The invention belongs to Catalysts for Motorcycles technical field, it is related to a kind of Catalysts for Motorcycles and preparation method thereof and preparation
Catalyst converter method.
Background technique
The motorcycle industry in China has entered the development steadily with maturation after it experienced fast-developing and disorderly competition
Stage.Motorcycle trip still accounts for larger specific gravity in the small and medium-sized cities of part, and Chongqing is referred to as " motor all " of China, and city is worked as
In motorcycle quantity be more than million crowd.Motorcycle itself has the characteristics that flexibility, saves path space, is easy to stop
Feature, at the same it is moderate, relatively it is suitble to the consumption of families with low and middle income.
But in the epoch that public transport is greatly developed, motorcycle should not be underestimated on the influence of the serious pollution bring of air.
With the development of economy, environmental pollution becomes the global problem faced at present, and environmental pollution is greatly from air
Pollution, and in air pollution source, the biggish ratio of exhaust emission occupation ratio of motor vehicles discharge.Therefore, exhaust emission is reduced
Object discharge amount has become the topic of growing interest.Motorcycle pollutant is arranged by State Environmental Protection Administration and quality surveillance general bureau
The standard for putting limit value and measurement method has done new establishment, has been more strict requirements just to the discharge of exhaust emission
It is required that producer spends more energy and financial resources to improve to motorcycle Mitigation options, to reach the regulation of state's laws.With
Emission regulation upgrading, its emission limit of motorcycle state four standard and durable mileage requirement having been carried out further increase,
In, THC, CO, NO of two-wheeled motor vehiclexEmission limit has added sternly 48%, 43%, 53% or more compared with three standard of state respectively, durable
Property state three require be 12000 kilometers (50≤discharge capacity < 150mL), state four require durable mileage be 20000 kilometers of (50≤discharge capacity <
150mL).Original three catalyst technologies of state have been unable to meet four emission limit of state and life requirement.
The prior art, such as CN201610006373, a kind of catalytic converter and its preparation for motorcycle exhaust processing
Method, method is more complicated, and uses ammonium hydroxide, unfriendly to environment；A kind of motor cycle catalyst of CN201710877312
And preparation method thereof, wherein using vanadium, there is certain toxicity etc.；Such as CN101700497B, a kind of motorcycle metal cellular set
Body three-way catalyst and preparation method, preparation method is not only complicated, but also can only meet the discharge standard of state three.
Summary of the invention
In view of this, thering is good catalytic motorcycle to urge the purpose of the present invention is to provide a kind of preparation method is simple
Agent and preparation method thereof more provides a kind of Motorcycle catalytic converter for meeting four discharge standard of state.
In order to achieve the above objectives, the invention provides the following technical scheme:
1. a kind of Catalysts for Motorcycles, the catalyst includes the first layer being formed in carrier substrates and is formed in described
The second layer on first layer；By mass percentage, wherein the first layer includes 25%~35%La-Al2O3；50%~
60% cerium zirconium sosoloid；1%~15% M (NO3)x, M is selected from one or more of Ba, Y, Ce, La, Pr, Nd, and 0.5%
~1% platinum nitrate, 3%~8% adhesive；The second layer includes 50%~60%La-Al2O3；The solid solution of 30%~35% cerium zirconium
Body；1%~15%M (NO3)x, M is selected from one or more of Ba, Y, Ce, La, Pr, Nd, 0.5%~1% platinum nitrate,
0.65%~0.8% rhodium nitrate, 3%~8% adhesive.
Further, platinum nitrate accounts for the 40-80% of platinum nitrate total amount in first layer.
Further, platinum nitrate accounts for the 45-70% of platinum nitrate total amount in first layer.
Further, the upper carrying capacity of noble metal is 35~50g/ft in the catalyst3。
Further, noble metal counts Pt:Pd:Rh=3~15:0:1 in mass ratio in the catalyst.
2. the preparation method of any of the above item Catalysts for Motorcycles, including following preparation step,
A, first layer slurry: M (NO3) is stirred in deionized waterx, add La-Al2O3And cerium zirconium sosoloid, stir 10-
30 minutes, platinum nitrate is added, adjusts pH value 3~5, stirring 60 minutes or more, is aged 12h or more, adhesive is added, stir 60 points
It is more than clock；
B, second layer slurry: M (NO3) is stirred in deionized waterx, add La-Al2O3And cerium zirconium sosoloid, stir 10-
30 minutes, platinum nitrate and rhodium nitrate is added, adjusts pH value 3~5, stirring 60 minutes or more, is aged 12h or more, adhesive is added,
Stirring 60 minutes or more.
3. the method that any of the above item Catalysts for Motorcycles prepares catalyst converter, including following preparation step,
A, first layer slurry is coated on carrier using coating machine, using oven drying, after the completion of dry, carries out high temperature
Roasting；
B, second layer slurry is coated on first layer using coating machine, using oven drying, after the completion of dry, is carried out high
Temperature roasting.
Further, which is characterized in that it is 60-85g/L that first layer slurry, which coats carrying capacity,.
Further, second layer slurry coating carrying capacity is 60~75g/L.
Further, 80 ± 10 DEG C of drying temperature, drying time are 1-2 hours.
Further, the high-temperature roasting is 300 DEG C of holdings 1~1.5h, 500~600 DEG C of 2~3h of holding.
The beneficial effects of the present invention are: the present invention passes through double coating schemes, and the selectivity of catalyst converter can be improved, pass through
Platinum/rhodium ratio in modulation outer coating targetedly removes CO and NOx in pollutant；Platinum is located in internal layer coating, can
Effectively to promote the ageing resistance of catalyst converter.Platinum in outer coating can effectively promote the low temperature active of catalyst converter, effectively
Reduce the pollutant emission of cold-start phase；Further pass through the relative amount of platinum in allotment internal layer coating and external coating, outer layer
It is preferable to the transformation efficiency of CO when platinum relative amount is higher, when outer layer platinum relative amount is lower, mainly for NOx, it is catalyzed simultaneously
The ageing resistance of agent is more preferably.Different noble metals are in La-Al2O3It is different with its absorption carriage ability on cerium zirconium sosoloid, so wanting needle
To the distribution material of property, the La-Al of first layer and the second layer in the present invention2O3With cerium zirconium sosoloid respectively according to required performance into
Obtained by row test adjustment.Catalysts for Motorcycles of the invention and its prepared catalyst converter overall cost are low, and simple process is made
Standby catalyst converter carries out I type emission testing, CO, THC and NO according to GB14622-2016 standardxDischarge value can satisfy state
Four emission requests, and meet the 70% or less of emission limit.
Specific embodiment
A preferred embodiment of the present invention will be described in detail below.The experiment side of actual conditions is not specified in embodiment
Method, usually according to conventional conditions or according to the manufacturer's recommendations.
Embodiment 1
1. making slurry
A. it makes internal layer slurry: 100g deionized water being added in container, stirring, cerous nitrate 7.6g is added, and (cerium oxide is pressed
The 39% of cerous nitrate quality calculates, similarly hereinafter), lanthanum nitrate 5.4g (cerium oxide based on 37%, similarly hereinafter) is stirred 15 minutes, is added
28.0g La-Al2O3(wherein: cerium oxide 40%, zirconium oxide 50%, lanthana 5%, praseodymium oxide with 60.0g cerium zirconium sosoloid one
5%) it, stirs 15 minutes, is added 0.9248g platinum nitrate (account for platinum nitrate total amount in catalyst 55%), adjust pH value 3.5, stir
It mixes 60 minutes, is aged 12h, 6.0g adhesive is added, stir 60 minutes；Described adhesive is boehmite (similarly hereinafter)；
B. it makes outer layer slurry: 100g deionized water being added in container, cerous nitrate 7.6g, lanthanum nitrate is added in stirring
5.4g is stirred 15 minutes, and 53g La-Al is added2O3With 32g cerium zirconium sosoloid two (wherein: cerium oxide 20%, zirconium oxide 70%,
Lanthana 4%, neodymia 6%), it stirs 15 minutes, 0.3363g rhodium nitrate is added, 0.7567g platinum nitrate is added and (accounts for catalyst
Middle platinum nitrate total amount 45%), pH value 4 is adjusted, is stirred 60 minutes, 12h is aged；7.0g adhesive is added, stirs 60 minutes；
Internal layer refers to that coating is formed in the first layer in carrier substrates, and outer layer refers to that coating is formed on the first layer
The second layer, it is the same below.Cerium zirconium ratio is 1:1.25-3.5 in cerium zirconium sosoloid, and embodiment is for uniform individually somewhat expensive gold
Belong to content, all uses same cerium zirconium sosoloid.
2. catalyst converter makes
A. internal layer coating coats: using coating machine by the coating of internal layer slurry on carrier, upper carrying capacity is 70g/L；Use baking
Case is dry, and 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C of holdings 1~
1.5h, 500~600 DEG C of 2~3h of holding.
B. outer coating coats: using coating machine by the coating of outer layer slurry on carrier, upper carrying capacity is 70g/L；Use baking
Case is dry, and 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C of holdings 1~
1.5h, 500~600 DEG C of 2~3h of holding.
3. catalyst converter bullion content is 40g/ft3, noble metal mass fraction ratio is Pt:Pd:Rh=5:0:1.Usually
Usual ratio sequence is Pt:Pd:Rh in industry.g/ft3Referring to the upper carrying capacity (PM Loading) of noble metal, this unit is
The statement for the World Catalyst continued to use is accustomed to.ft3The effective volume for the catalyst (device) being directed to as volume.In general, such as
Cylindrical honeycomb ceramic-substrate catalyst, the volume of the ceramic cylinder exactly represented；And what metal carrier catalyst referred generally to
It is the effective volume of Fe-Cr-Al inner core, does not generally include port or hollow space.
Embodiment 2
1. making slurry
A. it makes internal layer slurry: 100g deionized water being added in container, cerous nitrate 10.2g, lanthanum nitrate is added in stirring
8.0g is stirred 15 minutes, and 33g La-Al is added2O3It with 54g cerium zirconium sosoloid one, stirs 15 minutes, 1.1216g platinum nitrate is added
(66.7%), pH value 3.5 is adjusted, is stirred 60 minutes, 12h is aged, 6.0g adhesive is added, is stirred 60 minutes；
B. it makes outer layer slurry: 100g deionized water being added in container, cerous nitrate 7.6g, lanthanum nitrate is added in stirring
5.4g is stirred 15 minutes, and 52g La-Al2O3 and 33g cerium zirconium sosoloid two is added, and is stirred 15 minutes, and 0.3922g nitric acid is added
Rhodium is added 0.5599g platinum nitrate (33.3%), adjusts pH value 4, stirs 60 minutes, is aged 12h, and 6g adhesive, stirring 60 is added
Minute.
2. catalyst converter makes
A.2.1 internal layer coating coats: using coating machine by the coating of internal layer slurry on carrier, upper carrying capacity is 70g/L；It uses
Oven drying, 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C keep 1
~1.5h, 500~600 DEG C of 2~3h of holding.
B.2.2 outer coating coats: using coating machine by the coating of outer layer slurry on carrier, upper carrying capacity is 60g/L；It uses
Oven drying, 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C keep 1
~1.5h, 500~600 DEG C of 2~3h of holding.
3. catalyst converter bullion content is 40g/ft3, Precious metals ratio Pt:Pd:Rh=5:0:1.
Embodiment 3
1. making slurry
A. it makes internal layer slurry: 100g deionized water being added in container, stirring, barium nitrate 8.3g is added, and (barium monoxide is pressed
60% meter, similarly hereinafter), yttrium nitrate 10.1g (yttrium oxide based on 29.5%, similarly hereinafter) is stirred 15 minutes, and 28g La-Al is added2O3(lanthanum
Modified aluminas) and 57g cerium zirconium sosoloid one, it stirs 15 minutes, is added 0.7567g platinum nitrate (45%), adjust pH value 3.5,
Stirring 60 minutes is aged 12h, and 6.0g adhesive is added, and stirs 60 minutes；
B. it makes outer layer slurry: 100g deionized water being added in container, barium nitrate 6.6g, yttrium nitrate is added in stirring
2.0g is stirred 15 minutes, and 57g La-Al is added2O3It with 33g cerium zirconium sosoloid two, stirs 15 minutes, 0.3363g nitric acid is added
Rhodium is added 0.9248g platinum nitrate (55%), adjusts pH value 4, stirs 60 minutes, is aged 12h；6g adhesive is added, stirs 60 points
Clock；
2. catalyst converter makes
A. internal layer coating coats: using coating machine by the coating of internal layer slurry on carrier, upper carrying capacity is 80g/L；Use baking
Case is dry, and 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C of holdings 1~
1.5h, 500~600 DEG C of 2~3h of holding.
B. outer coating coats: using coating machine by the coating of outer layer slurry on carrier, upper carrying capacity is 70g/L；Use baking
Case is dry, and 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C of holdings 1~
1.5h 500~600 DEG C of 2~3h of holding.
3. catalyst converter bullion content is 40g/ft3, Precious metals ratio Pt:Pd:Rh=5:0:1.
Comparative example 1
1. making slurry
A, it makes internal layer slurry: 100g deionized water being added in container, cerous nitrate 10.2g, lanthanum nitrate is added in stirring
8.0g is stirred 15 minutes, and 33g La-Al is added2O3It with 54g cerium zirconium sosoloid one, stirs 15 minutes, 1.6815g nitric acid is added
Platinum adjusts pH value 3.5, stirs 60 minutes, is aged 12h, and 6.0g adhesive is added, and stirs 60 minutes；
B, it makes outer layer slurry: 100g deionized water being added in container, cerous nitrate 7.6g, lanthanum nitrate is added in stirring
5.4g is stirred 15 minutes, and 52g La-Al is added2O3It with 33g cerium zirconium sosoloid two, stirs 15 minutes, 0.3363g nitric acid is added
Rhodium adjusts pH value 4, stirs 60 minutes, is aged 12h, and 6g adhesive is added, and stirs 60 minutes；(it is different with 2 additive amount of embodiment,
Without platinum nitrate)
2. catalyst converter makes
A, internal layer coating coats: using coating machine by the coating of internal layer slurry on carrier, upper carrying capacity is 70g/L；Use baking
Case is dry, and 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C of holdings 1~
1.5h, 500~600 DEG C of 2~3h of holding.
B, outer coating coats: using coating machine by the coating of outer layer slurry on carrier, upper carrying capacity is 70g/L；Use baking
Case is dry, and 90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C of holdings 1~
1.5h, 500~600 DEG C of 2~3h of holding.
Comparative example 2
1. making slurry
100g deionized water is added in container, cerous nitrate 7.6g, lanthanum nitrate 5.3g is added in stirring, stirs 15 minutes, adds
Enter 47g La-Al2O3It with 47g cerium zirconium sosoloid one, stirs 15 minutes, 1.6815g platinum nitrate is added, 0.3363g nitric acid is added
Rhodium adjusts pH value 3.5, stirs 60 minutes, is aged 12h, and 6.0g adhesive is added, and stirs 60 minutes；
2. catalyst converter makes
Coating coating: using coating machine by the coating of internal layer slurry on carrier, upper carrying capacity is 70g/L；Using oven drying,
90 DEG C of drying temperature, drying time 2h；High-temperature roasting is carried out after drying；Maturing temperature and time: 300 DEG C of 1~1.5h of holding,
500~600 DEG C of 2~3h of holding.
4 result of embodiment is compared with
Sample is encapsulated on ZS125-23T vehicle, carries out I type emission testing, test knot according to GB14622-2016 standard
Fruit is as shown in table 1:
Each embodiment emission test results of table 1
| CO | THC | NOx | |
| Emission limit | 1140 | 380 | 70 |
| Embodiment 1 | 403 | 101 | 19 |
| Embodiment 2 | 399 | 104 | 13 |
| Embodiment 3 | 512 | 112 | 17 |
| Comparative example 1 | 753 | 137 | 33 |
| Comparative example 2 | 1022 | 149 | 72 |
CO, THC and NO of each embodiment catalyst converterxDischarge value can satisfy four emission request of state, and meet discharge limit
70% or less value.
Embodiment 1/2/3 and 1 catalyst of comparative example are subjected to 10000km aging by standard on chassis dynamometer, then into
Row I type emission testing, as a result shown in table 2:
I type emission test results after 2 catalyst 10000km aging of table
| CO | THC | NOx | |
| Emission limit | 1140 | 380 | 70 |
| Embodiment 1 | 493 | 106 | 37 |
| Embodiment 2 | 465 | 109 | 22 |
| Embodiment 3 | 603 | 127 | 34 |
| Comparative example 1 | 1183 | 169 | 59 |
Emission result indices value is all far below four limit value of state, and embodies good ageing resistance.
It can be according to vehicle original row pattern condition, in always formula precious metals pt: under Pd:Rh=3~15:0:1, inside and outside adjusting
Platinum/rhodium noble metal ratio in layer targetedly removes CO and NOx in pollutant.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (10)
1. a kind of Catalysts for Motorcycles, which is characterized in that the catalyst includes the first layer being formed in carrier substrates and shape
At the second layer on the first layer；By mass percentage, wherein the first layer includes 25%~35%La-Al2O3；
50%~60% cerium zirconium sosoloid；1%~15% M (NO3) x, M is selected from one of Ba, Y, Ce, La, Pr, Nd or several
Kind, 0.5%~1% platinum nitrate, 3%~8% adhesive；The second layer includes 50%~60%La-Al2O3；30%~35%
Cerium zirconium sosoloid；1%~15%M (NO3) x, M is selected from one or more of Ba, Y, Ce, La, Pr, Nd, 0.5%~1% nitre
Sour platinum, 0.65%~0.8% rhodium nitrate, 3%~8% adhesive.
2. Catalysts for Motorcycles according to claim 1, which is characterized in that platinum nitrate accounts for platinum nitrate total amount in first layer
40-80%.
3. Catalysts for Motorcycles according to claim 1, which is characterized in that the upper carrying capacity of noble metal is in the catalyst
35~50g/ft3。
4. Catalysts for Motorcycles according to claim 1, which is characterized in that noble metal is counted in mass ratio in the catalyst
Pt:Pd:Rh=3~15:0:1.
5. the preparation method of any one of the claim 1-4 Catalysts for Motorcycles, which is characterized in that walked including following preparation
Suddenly,
A, M (NO first layer slurry: is stirred in deionized water3) x, add La-Al2O3And cerium zirconium sosoloid, 10-30 points of stirring
Platinum nitrate is added in clock, adjusts pH value 3~5, and stirring 60 minutes or more is aged 12h or more, and adhesive is added, stir 60 minutes with
On；
B, M (NO second layer slurry: is stirred in deionized water3) x, add La-Al2O3And cerium zirconium sosoloid, 10-30 points of stirring
Platinum nitrate and rhodium nitrate is added in clock, adjusts pH value 3~5, stirring 60 minutes or more, is aged 12h or more, adhesive, stirring is added
60 minutes or more.
6. the method that any one of the claim 1-4 Catalysts for Motorcycles prepares catalyst converter, which is characterized in that including following system
Standby step,
A, first layer slurry is coated on carrier using coating machine, using oven drying, after the completion of dry, carries out high temperature roasting
It burns；
B, second layer slurry is coated on first layer using coating machine, using oven drying, after the completion of dry, carries out high temperature roasting
It burns.
7. preparing the method for catalyst converter described in claim 6, which is characterized in that it is 60-85g/L that first layer slurry, which coats carrying capacity,.
8. preparing the method for catalyst converter described in claim 6, which is characterized in that it is 60~75g/L that second layer slurry, which coats carrying capacity,.
9. preparing the method for catalyst converter described in claim 6, which is characterized in that 80 ± 10 DEG C of drying temperature, drying time 1-2
Hour.
10. preparing the method for catalyst converter described in claim 6, which is characterized in that the high-temperature roasting be 300 DEG C keep 1~
1.5h, 500~600 DEG C of 2~3h of holding.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282783A (en) * | 2005-10-05 | 2008-10-08 | 株式会社卡特勒 | Exhaust gas purification catalyst |
| JP2017025241A (en) * | 2015-07-24 | 2017-02-02 | 日本ペイント・オートモーティブコーティングス株式会社 | Intermediate coating composition and method for forming multilayer coating film |
| CN107649127A (en) * | 2017-09-25 | 2018-02-02 | 艾科卡特催化器丹阳有限公司 | A kind of motor cycle catalyst and preparation method thereof |
| CN108404975A (en) * | 2018-04-27 | 2018-08-17 | 中自环保科技股份有限公司 | A kind of oxidized form catalysis system and its preparation process with good low temperature ignition performance |
-
2018
- 2018-10-25 CN CN201811246701.8A patent/CN109365007A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282783A (en) * | 2005-10-05 | 2008-10-08 | 株式会社卡特勒 | Exhaust gas purification catalyst |
| JP2017025241A (en) * | 2015-07-24 | 2017-02-02 | 日本ペイント・オートモーティブコーティングス株式会社 | Intermediate coating composition and method for forming multilayer coating film |
| CN107649127A (en) * | 2017-09-25 | 2018-02-02 | 艾科卡特催化器丹阳有限公司 | A kind of motor cycle catalyst and preparation method thereof |
| CN108404975A (en) * | 2018-04-27 | 2018-08-17 | 中自环保科技股份有限公司 | A kind of oxidized form catalysis system and its preparation process with good low temperature ignition performance |
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