CN114961940A - 用于汽油废气应用的新型三区两层twc催化剂 - Google Patents
用于汽油废气应用的新型三区两层twc催化剂 Download PDFInfo
- Publication number
- CN114961940A CN114961940A CN202210165747.7A CN202210165747A CN114961940A CN 114961940 A CN114961940 A CN 114961940A CN 202210165747 A CN202210165747 A CN 202210165747A CN 114961940 A CN114961940 A CN 114961940A
- Authority
- CN
- China
- Prior art keywords
- inlet
- outlet
- catalyst
- catalyst layer
- catalyst article
- 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
- 239000003054 catalyst Substances 0.000 title claims abstract description 184
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000010948 rhodium Substances 0.000 claims abstract description 31
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 22
- 230000004323 axial length Effects 0.000 claims abstract description 20
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 19
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 48
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 39
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 35
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 31
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 28
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 24
- 239000002131 composite material Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 14
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 14
- 229910052746 lanthanum Inorganic materials 0.000 claims description 14
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 13
- 239000000395 magnesium oxide Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 229910052788 barium Inorganic materials 0.000 claims description 10
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 10
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 9
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 9
- 150000002739 metals Chemical class 0.000 claims description 8
- 229910052779 Neodymium Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052712 strontium Inorganic materials 0.000 claims description 6
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 6
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 3
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical class [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910003447 praseodymium oxide Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- RUDFQVOCFDJEEF-UHFFFAOYSA-N oxygen(2-);yttrium(3+) Chemical class [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims 1
- 238000011068 loading method Methods 0.000 description 36
- 239000011248 coating agent Substances 0.000 description 29
- 238000000576 coating method Methods 0.000 description 29
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 13
- 230000003197 catalytic effect Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 229910052697 platinum Inorganic materials 0.000 description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 229910000420 cerium oxide Inorganic materials 0.000 description 3
- 229910052878 cordierite Inorganic materials 0.000 description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- -1 niobia Chemical compound 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052642 spodumene Inorganic materials 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HZVVJJIYJKGMFL-UHFFFAOYSA-N almasilate Chemical compound O.[Mg+2].[Al+3].[Al+3].O[Si](O)=O.O[Si](O)=O HZVVJJIYJKGMFL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 235000012243 magnesium silicates Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B01J35/19—Catalysts containing parts with different compositions
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8643—Removing mixtures of carbon monoxide or hydrocarbons and nitrogen oxides
-
- 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]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] 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
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9463—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick
- B01D53/9468—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick in different layers
-
- 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
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9463—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick
- B01D53/9472—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick in different zones
-
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/464—Rhodium
-
- 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
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
-
- 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
- B01J37/024—Multiple impregnation or coating
- B01J37/0244—Coatings comprising several layers
-
- 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
- F01N3/101—Three-way 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
- 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
-
- 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
- F01N3/2825—Ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1025—Rhodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/204—Alkaline earth metals
- B01D2255/2042—Barium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2065—Cerium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20715—Zirconium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/40—Mixed oxides
- B01D2255/407—Zr-Ce mixed oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/902—Multilayered catalyst
- B01D2255/9022—Two layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/903—Multi-zoned catalysts
- B01D2255/9032—Two zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/903—Multi-zoned catalysts
- B01D2255/9035—Three zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/908—O2-storage component incorporated in the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/915—Catalyst supported on particulate filters
- B01D2255/9155—Wall flow filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/92—Dimensions
- B01D2255/9202—Linear dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/92—Dimensions
- B01D2255/9207—Specific surface
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2370/00—Selection of materials for exhaust purification
- F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
-
- 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
- F01N2510/0682—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having a discontinuous, uneven or partially overlapping coating of catalytic material, e.g. higher amount of material upstream than downstream or vice versa
-
- 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
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/10—Carbon or carbon oxides
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/12—Hydrocarbons
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/16—Oxygen
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Ceramic Engineering (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
本发明涉及一种用于汽油废气应用的新型三区两层TWC催化剂,具体公开了一种三元催化剂制品及其在用于内燃机的排气系统中的用途。一种用于处理废气的催化剂制品,其包含:包括入口端、出口端并具有轴向长度L的载体;开始于该入口端并延伸小于该轴向长度L的入口催化剂层,其中该入口催化剂层包含入口钯组分;开始于该出口端并延伸小于该轴向长度L的出口催化剂层,其中该出口催化剂层包含出口铑组分;和其中该出口催化剂层与该入口催化剂层重叠。
Description
本申请为分案申请,其母案申请的申请号为201811491415.8,申请日为2018年12月7日,发明名称为“用于汽油废气应用的新型三区两层TWC催化剂”。
技术领域
本发明涉及用于处理汽油机的废气排放的催化制品。
背景技术
内燃机产生含有多种污染物的废气,污染物包括烃(HC)、一氧化碳(CO)和氮氧化物(“NOx”)。广泛地使用包含废气催化剂的排放控制系统来减少这些污染物排放到大气的量。用于汽油机应用的常用催化剂是TWC。TWC执行三个主要功能:(1)CO的氧化;(2)未燃烧的HC的氧化;和(3)NOx还原为N2。
在多数催化转化器中,TWC被涂覆在可以承受高温的高表面积载体如流通式蜂窝体整料上。这些载体的大表面积促进所需的非均相反应,但是也会造成排气背压的增高,即限制废气从发动机流到排气管。排气系统中的高背压会降低发动机的燃料经济性和功率输出。尽管TWC技术取得了进步,如美国专利6,022,825、美国专利9,352,279、美国专利9,040,003和美国专利公布2016/0228818中描述的那些,但是仍需要用于某些发动机平台的改进的催化转化器,其同时产生高转化速率和低背压。本发明尤其解决了这些需要。
发明内容
本发明的一个方面涉及用于处理废气的催化剂制品,其包含:包括入口端、出口端并具有轴向长度L的载体;开始于该入口端并延伸小于该轴向长度L的入口催化剂层,其中该入口催化剂层包含入口钯组分;开始于该出口端并延伸小于该轴向长度L的出口催化剂层,其中该出口催化剂层包含出口铑组分;和其中该出口催化剂层与该入口催化剂层重叠。
本发明还包括用于内燃机的排气系统,其包含本发明的三元催化剂部件。
本发明还包括处理内燃机的废气,特别是处理汽油机的废气。该方法包括使废气与本发明的三元催化剂部件接触。
附图说明
图1显示了具有入口催化剂层和出口催化剂层的催化剂制品。入口催化剂层完全地直接负载/沉积在载体上。出口催化剂层部分地直接负载/沉积在载体上,并部分地负载/沉积在入口催化剂层的上面。
图2显示了具有入口催化剂层和出口催化剂层的催化剂制品。出口催化剂层完全地直接负载/沉积在载体上。入口催化剂层部分地直接负载/沉积在载体上,并部分地负载/沉积在出口催化剂层的上面。
图3显示了对比的商业催化剂制品,其在同一个区域的载体上具有两个催化剂层。
具体实施方式
本发明涉及燃烧废气如由汽油机或其他发动机产生的废气的催化转化,并涉及相关的催化制品和系统。更具体地,本发明涉及在车辆排气系统中NOx、CO和HC的同时净化。本发明人发现了某些催化活性金属和它们的取向之间的协同关系,其出人意料地产生NOx、CO和HC的高转化率,同时降低排气背压。本发明的方法还减少了处理时间,和降低了催化剂成本。
本发明的一个方面涉及用于处理废气的催化剂制品,其包含:包括入口端、出口端并具有轴向长度L的载体;开始于该入口端并延伸小于该轴向长度L的入口催化剂层,其中该入口催化剂层包含入口钯组分;开始于该出口端并延伸小于该轴向长度L的出口催化剂层,其中该出口催化剂层包含出口铑组分;和其中该出口催化剂层与该入口催化剂层重叠。
本发明的催化剂制品可以沿着载体的轴划分为三个催化剂区:仅涂有入口催化剂层的上游区,涂有入口和出口催化剂层的中间区,和仅涂有出口催化剂层的下游区。
本发明人发现,这种包含多种取向的催化剂在提高催化性能和降低背压方面产生协同效应,这是使用单独的或常规取向的催化剂不能实现。本发明的预料不到的益处是,与类似浓度(载体涂层(washcoat)负载量)的常规TWC催化剂相比更低的背压,和与常规TWC催化剂相比(甚至当该常规TWC具有更高浓度时)改进的催化剂性能。这些益处获得改进的发动机性能,改进的燃料经济性和更低的成本。
催化剂制品的入口催化剂层可以延伸轴向长度L的50-99%。优选地,入口催化剂层可以延伸轴向长度L的55-95%,60-90%,更优选65-85%。(例如参见图1和2)
催化剂制品的出口催化剂层可以延伸轴向长度L的50-99%。优选地,出口催化剂层可以延伸轴向长度L的55-95%,60-90%,更优选65-85%。(例如参见图1和2)
入口催化剂层可以基本上不含入口钯组分之外的PGM金属。
入口催化剂层可以含入口钯组分之外的PGM金属,例如,铂和或铑。入口催化剂层可以包含至多300g/ft3的入口钯或铂钯组分。优选地,入口催化剂层可以包含10-200g/ft3,更优选20-150g/ft3的入口钯或钯铂组分,其中,铂钯的重量比例可以为60:1-1:60,优选地为30:1-1:30,更优选地为10:1-1:10。
入口催化剂层可以进一步包含入口无机氧化物材料、储氧(OSC)材料、入口碱金属或碱土金属组分和/或入口无机氧化物。
入口催化剂层的总载体涂层负载量可以为0.1-5g/in3。优选地,入口催化剂层的总载体涂层负载量是0.5-3.5g/in3,最优选地,入口催化剂层的总载体涂层负载量是1-2.5g/in3。
入口OSC材料选自氧化铈、氧化锆、氧化铈-氧化锆混合氧化物和氧化铝-氧化铈-氧化锆混合氧化物。更优选地,入口OSC材料包含氧化铈-氧化锆混合氧化物。氧化铈-氧化锆混合氧化物可以进一步包含一些掺杂剂,如La、Nd、Y、Pr等。
氧化铈-氧化锆混合氧化物可以具有氧化锆与氧化铈至少50:50,优选大于60:40,更优选大于75:25的摩尔比。另外,入口OSC材料可以充当入口钯组分的载体材料。
入口OSC材料(例如氧化铈-氧化锆混合氧化物)可以为基于入口催化剂层的总载体涂层负载量计10-90wt%,优选25-75wt%。更优选35-65wt%。
入口催化剂层中的入口OSC材料负载量可以小于1.5g/in3。在一些实施方案中,入口催化剂层中的入口OSC材料负载量不大于1.2g/in3,1.0g/in3,0.9g/in3,0.8g/in3,0.7g/in3或0.6g/in3。
在一些实施方案中,入口碱金属或碱土金属可以沉积在入口OSC材料上。替代地或另外地,入口碱金属或碱土金属可以沉积在入口无机氧化物上。即在一些实施方案中,入口碱金属或碱土金属可以沉积在,即存在于入口OSC材料和入口无机氧化物二者上。
优选地,入口碱金属或碱土金属负载/沉积在入口无机氧化物(例如氧化铝)上。对于与入口无机氧化物接触而言另外地或替代地,入口碱金属或碱土金属可以与入口OSC材料还有入口钯组分接触。
入口碱金属或碱土金属优选为钡或锶。优选地,当存在时,钡或锶的存在量为基于入口催化剂层的总重量计0.1-15wt%,更优选3-10wt%的钡含量。
优选地,钡作为BaCO3形式存在。这样的材料可以以本领域已知的任何方法,例如初湿浸渍或喷雾干燥来获得。
入口无机氧化物优选为第2、3、4、5、13和14族元素的氧化物。入口无机氧化物优选选自氧化铝、氧化铈、氧化镁、二氧化硅、氧化铌、镧、锆、钕、镨氧化物及其混合氧化物或复合氧化物。特别优选地,入口无机氧化物为氧化铝、镧/氧化铝复合氧化物或氧化镁/氧化铝复合氧化物。一种尤其优选的入口无机氧化物为镧/氧化铝复合氧化物或氧化镁/氧化铝。入口无机氧化物可以是用于入口钯组分和/或用于入口碱金属或碱土金属的载体材料。
优选的入口无机氧化物优选具有大于80m2/g的新鲜表面积,0.1-4mL/g的孔体积。特别优选具有大于100m2/g的表面积的高表面积无机氧化物,例如高表面积氧化铝。其他优选的入口无机氧化物包括镧/氧化铝复合氧化物,任选地进一步包含铈组分例如氧化铈。在这样的情况中,氧化铈可以存在于该镧/氧化铝复合氧化物的表面上,例如作为涂层。
入口OSC材料和入口无机氧化物可以具有不大于10:1,优选不大于8:1或5:1,更优选不大于4:1或3:1,最优选不大于2:1的重量比。
替代地,入口OSC材料和入口无机氧化物可以具有10:1-1:10,优选8:1-1:8或5:1-1:5,更优选4:1-1:4或3:1-1:3,最优选2:1-1:2的重量比。
出口催化剂层可以基本上不含出口铑组分之外的PGM金属。
出口催化剂层可以包含1-20g/ft3的出口铑或铂铑组分。优选地,出口催化剂层可以包含2-15g/ft3,更优选3-10g/ft3的出口铑或铂铑组分,其中,铂铑的重量比例可以为20:1-1:20,优选地为15:1-1:15,更优选地为10:1-1:10。
出口催化剂层的总载体涂层负载量可以为0.1-3.5g/in3。优选地,出口催化剂层的总载体涂层负载量为0.5-3g/in3,最优选地,出口催化剂层的总载体涂层负载量为0.6-2g/in3。
出口催化剂层可以进一步包含出口储氧(OSC)材料、出口碱金属或碱土金属组分和/或出口无机氧化物。
出口OSC材料优选选自氧化铈、氧化锆、氧化铈-氧化锆混合氧化物和氧化铝-氧化铈-氧化锆混合氧化物。更优选地,出口OSC材料包含氧化铈-氧化锆混合氧化物。氧化铈-氧化锆混合氧化物可以进一步包含一些掺杂元素,如镧、钕、镨、钇等。
氧化铈-氧化锆混合氧化物可以具有氧化锆与氧化铈至少50:50,优选大于60:40,更优选大于80:20的摩尔比。另外,出口OSC材料可以充当出口铑组分的载体材料。
出口OSC材料(例如松散氧化铈)可以为基于出口催化剂层的总载体涂层负载量计10-90wt%,优选25-75wt%,更优选35-65wt%。
出口催化剂层中的出口OSC材料负载量可以小于1.5g/in3。在一些实施方案中,出口催化剂层中的出口OSC材料负载量不大于1.2g/in3,1.1g/in3或1.0g/in3。
出口碱金属或碱土金属优选为钡或锶。优选地,当存在时,钡或锶的存在量为基于出口催化剂层的总重量计0.1-15wt%,更优选3-10wt%的钡含量。
优选地,钡作为BaCO3形式存在。这样的材料可以本领域已知的任何方法,例如初湿浸渍或喷雾干燥来获得。
出口催化剂层优选大体上不含出口碱金属或碱土金属。更优选地,出口催化剂层基本上不含出口碱金属或碱土金属。
出口无机氧化物优选为第2、3、4、5、13和14族元素的氧化物。出口无机氧化物优选选自氧化铝、氧化锆、氧化镁、二氧化硅、氧化铌、镧、锆、钕、镨氧化物及其混合氧化物或复合氧化物。特别优选地,出口无机氧化物是氧化铝、镧/氧化铝复合氧化物或氧化镁/氧化铝复合氧化物。一种尤其优选的出口无机氧化物是镧/氧化铝复合氧化物或氧化镁/氧化铝或锆/氧化铝复合氧化物。出口无机氧化物可以是用于出口铑组分的载体材料。
出口OSC材料和出口无机氧化物可以具有不大于10:1,优选不大于8:1或5:1,更优选不大于4:1,最优选不大于3:1的重量比。
替代地,出口OSC材料和出口无机氧化物可以具有10:1-1:10,优选8:1-1:8或5:1-1:5,更优选4:1-1:4,最优选3:1-1:3的重量比。
在一些实施方案中,出口铑组分和入口钯组分具有60:1-1:60的重量比。优选地,出口铑组分和入口钯组分具有30:1-1:30的重量比。更优选地,出口铑组分和入口钯组分具有20:1-1:20的重量比。最优选地,出口铑组分和入口钯组分具有15:1-1:15的重量比。
本发明的催化剂制品可以包含本领域技术人员已知的其他组分。例如,本发明的组合物可以进一步包含至少一种粘结剂和/或至少一种表面活性剂。当存在粘结剂时,优选可分散的氧化铝粘结剂。
优选地,载体是流通式整料或壁流式汽油微粒过滤器。更优选地,载体是流通式整料。
载体长度可以小于100mm,优选为50-90mm。
流通式整料载体具有其间限定了纵向的第一面和第二面。流通式整料载体具有多个在第一面和第二面之间延伸的通道。多个通道在纵向上延伸,提供多个内表面(例如限定各个通道的壁的表面)。多个通道每个具有在第一面的开口和在第二面的开口。为避免疑义,流通式整料载体不是壁流式过滤器。
第一面通常在载体的入口端,第二面在载体的出口端。
通道可以为恒定的宽度,并且多个通道每个可以具有均匀的通道宽度。
优选地,在与纵向垂直的平面内,整体式载体具有每平方英寸100-900个通道,优选300-750个。例如,在第一面上,开放的第一通道和封闭的第二通道的密度为每平方英寸300-750个通道。通道可以具有矩形、正方形、圆形、椭圆形、三角形、六边形或其他几何形状的横截面。
整体式载体充当用于支撑催化材料的载体材料。用于形成整体式载体的适合材料包括陶瓷样材料,如堇青石、碳化硅、氮化硅、氧化锆、莫来石、锂辉石、氧化铝-二氧化硅、氧化镁或硅酸锆或者多孔的难熔金属。这样的材料和它们在制造多孔整料载体中的应用是本领域中公知的。
应当注意,本文所述的流通式整体式载体是单个部件(即单块载体)。不过,当形成排放处理系统时,所用的载体可以通过将多个通道粘合在一起或者通过将多个较小的本文所述的载体粘合在一起来形成。这样的技术,以及排放处理系统的适合的外壳和构造是本领域中公知的。
在本发明的催化剂制品包含陶瓷载体的实施方案中,该陶瓷载体可以由任何适合的耐高温材料制成,该耐高温材料例如氧化铝、二氧化硅、二氧化钛、氧化铈、氧化锆、氧化镁、沸石、氮化硅、碳化硅、锆硅酸盐、镁硅酸盐、铝硅酸盐和金属铝硅酸盐(如堇青石和锂辉石)或者其任意两种或更多种的混合物或混合氧化物。特别优选堇青石、铝硅酸镁和碳化硅。
在本发明的催化剂制品包含金属载体的实施方案中,该金属载体可以由任何适合的金属,特别是耐热金属和金属合金制成,该耐热金属和金属合金例如钛和不锈钢以及含有铁、镍、铬和/或铝还有其他痕量金属的铁素体合金。
如图1中所示,入口催化剂层完全地直接负载/沉积载体上。出口催化剂层部分地直接负载/沉积在载体上,并部分地负载/沉积在入口催化剂层上面。所以,中间区包含入口催化剂层和出口催化剂层二者。
如图2中所示,出口催化剂层完全地直接负载/沉积在载体上。入口催化剂层部分地直接负载/沉积在载体上,并部分地负载/沉积在出口催化剂层上面。所以,中间区包含出口催化剂层和入口催化剂层二者。
本发明的另一方面涉及使用本文所述的催化剂制品来处理含有NOx、CO和HC的车辆废气的方法。装备有根据本发明制造的TWC的催化转化器不仅显示了与常规TWC相比改进的或相当的催化剂性能,而且显示了背压方面显著的改进(例如参见实施例1和2以及表1和2)。
本发明的另一方面涉及用于处理车辆废气的系统,该系统包含本文所述的催化剂制品,连同用于将该废气输送过该系统的排气管。
定义
术语“载体涂层”是本领域中公知的,指的是通常在生产催化剂过程中施用到载体的粘合涂层。
本文使用的缩写“PGM”指的是“铂族金属”。术语“铂族金属”总体上指的是选自Ru、Rh、Pd、Os、Ir和Pt的金属,优选为选自Ru、Rh、Pd、Ir和Pt的金属。总的来说,术语“PGM”优选指的是选自Rh、Pt和Pd的金属。
本文使用的术语“混合氧化物”总体上指的是单一相的氧化物的混合物,如本领域中常规上已知的。本文使用的术语“复合氧化物”总体上指的是具有多于一相的氧化物的组合物,如本领域中常规上已知的。
本文使用的表达“主要由……组成”将特征范围限定为包括指定的材料或步骤和不实质影响该特征的基本特性的任何其他材料或步骤,例如少量杂质。表达“主要由……组成”囊括表达“由……组成”。
通常在区域、层或区的含量的语境中,本文针对材料使用的表达“大体上不含”意思是该材料为少量,如≤5wt%,优选≤2wt%,更优选≤1wt%。表达“大体上不含”囊括表达“不包含”。
通常在区域、层或区的含量的语境中,本文针对材料使用的表达“基本上不含”意思是该材料为痕量,如≤1wt%,优选≤0.5wt%,更优选≤0.1wt%。表达“基本上不含”囊括表达“不包含”。
本文使用中任何提及的掺杂剂的量,特别是总量,用wt%表示,指的是载体材料或其难熔金属氧化物的重量。
本文使用的术语“负载量”指的是基于金属重量的测量,单位为g/ft3。
以下实施例仅例示本发明。本领域技术人员将认识到本发明主旨和权利要求书范围内的许多变化。
实施例
材料
全部材料是可商购的和从已知供应商处获得,除非另外指出。
催化剂1(对比)
催化剂1是具有双层结构(例如如图3中所示)的商业三元(Pd-Rh)催化剂。底层由Pd负载在由第一CeZr混合氧化物、La稳定化的氧化铝和Ba助剂组成的涂层中。底层的涂层负载量为约2.2g/in3,其中Pd负载量为75g/ft3。上层由Rh负载在由第二CeZr混合氧化物、La稳定化的氧化铝组成的涂层中。上层的载体涂层负载量为约1.6g/in3,其中Rh负载量为5g/ft3。催化剂1的总载体涂层负载量为约3.8g/in3。
催化剂2
根据本发明来制备催化剂2。底层由Pd负载在由入口CeZr混合氧化物、La稳定化的氧化铝、Ba助剂组成的涂层中。底层的载体涂层负载量为约2.2g/in3,其中Pd负载量为75g/ft3。上层由Rh负载在由出口CeZr混合氧化物、La稳定化的氧化铝组成的涂层上。上层的载体涂层负载量为约1.6g/in3,其中Rh负载量为5g/ft3。催化剂2的总载体涂层负载量(中间区)为约3.8g/in3。
使用标准涂覆程序,将含Pd的最终底层浆料从与对比催化剂1相同的载体的入口面涂覆,目标涂覆深度为载体长度的80%,在90℃干燥。然后,使用标准涂覆程序,将含Rh的上层浆料从含有干燥底层的载体的出口面涂覆,目标涂覆深度为载体长度的80%,之后在90℃干燥,在500℃煅烧45分钟。
催化剂3
根据本发明来制备催化剂3。底层由Pd负载在由入口CeZr混合氧化物、La稳定化的氧化铝、Ba助剂组成的涂层中。底层的载体涂层负载量为约1.9g/in3,其中Pd负载量为75g/ft3。上层由Rh负载在由出口CeZr混合氧化物、La稳定化的氧化铝组成。上层的载体涂层负载量为约1.5g/in3,其中Rh负载量为5g/ft3。催化剂3的总载体涂层负载量(中间区)为约3.4g/in3。
使用标准涂覆程序,将含Pd的最终底层浆料从与对比催化剂1相同的载体的入口面涂覆,目标涂覆深度为载体长度的80%,在90℃干燥。然后,使用标准涂覆程序,将含Rh的上层浆料从含有干燥底层的载体的出口面涂覆,目标涂覆深度为载体长度的80%,之后在90℃干燥,在500℃煅烧45分钟。
催化剂4
根据本发明来制备催化剂4。底层由Pd负载在由入口CeZr混合氧化物、La稳定化的氧化铝、Ba助剂剂组成的涂层中。底层的载体涂层负载量为约1.7g/in3,其中Pd负载量为75g/ft3。上层由Rh负载在由出口CeZr混合氧化物、La稳定化的氧化铝组成的涂层中。上层的载体涂层负载量为约1.3g/in3,其中Rh负载量为5g/ft3。催化剂4的总载体涂层负载量(中间区)为约3.0g/in3。
使用标准涂覆程序,将含Pd的最终底层浆料从与对比催化剂1相同的载体的入口面涂覆,目标涂覆深度为载体长度的80%,在90℃干燥。然后,使用标准涂覆程序,将含Rh的上层浆料从含有干燥底层的载体的出口面涂覆,目标涂覆深度为载体长度的80%,之后在90℃干燥,在500℃煅烧45分钟。
实验结果
实施例1
将对比催化剂1和催化剂2-4用四工况标准老化循环台架进行200小时的发动机台架老化试验,峰值温度约为980℃。在具有1.4升发动机的商业车辆上进行车辆排放。在催化剂前和后测量排放。
表1整车稀释袋采尾气排放结果
如表1中所示,催化剂4甚至以相当于对比催化剂1中的约80%的更低总载体涂层负载量,表现出相当的或者甚至改进的催化剂性能(例如参见与THC/NMHC排放相关的改进性能,当催化剂4与对比催化剂1比较时,从0.047/0.031g/km到0.042/0.026g/km,分别改进11%和16%)。
实施例2
将对比催化剂1、催化剂2和催化剂4以相同的载体类型、孔目数和尺寸进行涂覆,然后在200、300、400和600m3/h的空气流量评价它们的冷流背压。
表2中显示,催化剂1、催化剂2和催化剂4,相对于未涂覆载体的背压百分比增大。数据指出,多区催化剂4与催化剂1的标准双层实施例相比,对背压具有显著更低的贡献。
表2催化剂冷流背压测试结果
Claims (27)
1.用于处理废气的催化剂制品,其包含:
包括入口端、出口端并具有轴向长度L的载体;
开始于该入口端并延伸小于该轴向长度L的入口催化剂层,其中该入口催化剂层包含入口钯组分,和其中该入口催化剂层基本上不含该入口钯组分之外的PGM金属;
开始于该出口端并延伸小于该轴向长度L的出口催化剂层,其中该出口催化剂层包含出口铑组分;和
其中该出口催化剂层与该入口催化剂层重叠。
2.根据权利要求1所述的催化剂制品,其中该入口催化剂层延伸该轴向长度L的50-99%。
3.根据权利要求1或2所述的催化剂制品,其中该出口催化剂层延伸该轴向长度L的50-99%。
4.根据前述权利要求中任一项所述的催化剂制品,其中该出口催化剂层与该入口催化剂层重叠该轴向长度L的5-90%。
5.根据前述权利要求中任一项所述的催化剂制品,其中该出口催化剂层与该入口催化剂层重叠该轴向长度L的40-80%。
6.根据前述权利要求中任一项所述的催化剂制品,其中该入口层包含至多300g/ft3的该入口钯组分。
7.根据前述权利要求中任一项所述的催化剂制品,其中该出口催化剂层基本上不含该出口铑组分之外的PGM金属。
8.根据前述权利要求中任一项所述的催化剂制品,其中该出口层包含1-20g/ft3的该出口铑组分。
9.根据前述权利要求中任一项所述的催化剂制品,其中该入口催化剂层进一步包含入口储氧(OSC)材料、入口碱金属或碱土金属组分和/或入口无机氧化物。
10.根据权利要求9所述的催化剂制品,其中该入口OSC材料选自氧化铈、氧化锆、氧化铈-氧化锆混合氧化物或氧化铝-氧化铈-氧化锆混合氧化物。
11.根据权利要求10所述的催化剂制品,其中该入口OSC材料包含氧化铈-氧化锆混合氧化物。
12.根据权利要求9-11中任一项所述的催化剂制品,其中该入口钯组分负载在该入口无机氧化物上。
13.根据权利要求9-12中任一项所述的催化剂制品,其中该入口无机氧化物选自氧化铝,氧化铈,氧化镁,二氧化硅,镧、钕、镨、钇氧化物及其混合氧化物或复合氧化物。
14.根据权利要求13所述的催化剂制品,其中该入口无机氧化物为氧化铝、镧/氧化铝复合氧化物或氧化镁/氧化铝复合氧化物。
15.根据权利要求9-14中任一项所述的催化剂制品,其中该入口碱金属或碱土金属为钡或锶。
16.根据权利要求15所述的催化剂制品,其中该入口催化剂层中钡或锶的存在量为基于该入口催化剂层的总重量计0.1-15wt%。
17.根据前述权利要求中任一项所述的催化剂制品,其中该出口催化剂层进一步包含出口储氧(OSC)材料和/或出口无机氧化物。
18.根据权利要求17所述的催化剂制品,其中该出口OSC材料选自氧化铈、氧化锆、氧化铈-氧化锆混合氧化物和氧化铝-氧化铈-氧化锆混合氧化物。
19.根据权利要求18所述的催化剂制品,其中该出口OSC材料包括氧化铈-氧化锆混合氧化物。
20.根据权利要求17-19中任一项所述的催化剂制品,其中该出口无机氧化物选自氧化铝,氧化锆,氧化镁,二氧化硅,镧、钇、钕、镨氧化物及其混合氧化物或复合氧化物。
21.根据权利要求20所述的催化剂制品,其中该出口无机氧化物为氧化铝、镧/氧化铝复合氧化物或氧化镁/氧化铝复合氧化物。
22.根据前述权利要求中任一项所述的催化剂制品,其中该载体是流通式整料或壁流式过滤器。
23.根据前述权利要求中任一项所述的催化剂制品,其中该载体长度小于100mm。
24.根据前述权利要求中任一项所述的催化剂制品,其中该入口催化剂层直接负载/沉积在该载体上。
25.根据权利要求1-24中任一项所述的催化剂制品,其中该出口催化剂层直接负载/沉积在该载体上。
26.用于处理燃烧废气流的排放处理系统,其包含根据权利要求1-25中任一项所述的催化剂制品。
27.处理内燃机废气的方法,其包括使该废气与根据权利要求1-25中任一项所述的催化剂制品接触。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2017112932528 | 2017-12-08 | ||
CN201711293252 | 2017-12-08 | ||
CN201811491415.8A CN109899138A (zh) | 2017-12-08 | 2018-12-07 | 用于汽油废气应用的新型三区两层twc催化剂 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811491415.8A Division CN109899138A (zh) | 2017-12-08 | 2018-12-07 | 用于汽油废气应用的新型三区两层twc催化剂 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114961940A true CN114961940A (zh) | 2022-08-30 |
Family
ID=66750416
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210165747.7A Pending CN114961940A (zh) | 2017-12-08 | 2018-12-07 | 用于汽油废气应用的新型三区两层twc催化剂 |
CN201811491415.8A Pending CN109899138A (zh) | 2017-12-08 | 2018-12-07 | 用于汽油废气应用的新型三区两层twc催化剂 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811491415.8A Pending CN109899138A (zh) | 2017-12-08 | 2018-12-07 | 用于汽油废气应用的新型三区两层twc催化剂 |
Country Status (6)
Country | Link |
---|---|
US (2) | US11110447B2 (zh) |
EP (1) | EP3722571B1 (zh) |
JP (2) | JP2021505367A (zh) |
CN (2) | CN114961940A (zh) |
BR (1) | BR112020009925A2 (zh) |
WO (1) | WO2019109998A1 (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112020009925A2 (pt) * | 2017-12-08 | 2020-11-24 | Johnson Matthey (Shanghai) Chemicals Limited | artigo catalisador para o tratamento de gás de escape, sistema de tratamento de emissão para tratar um fluxo de um gás de escape de combustão, e, método de tratamento de um gás de escape de um motor de combustão interna |
JP7195995B2 (ja) * | 2019-03-27 | 2022-12-26 | 株式会社キャタラー | 排ガス浄化用触媒 |
CN110764093A (zh) * | 2019-09-30 | 2020-02-07 | 苏州佳世达电通有限公司 | 水下生物辨识系统及其方法 |
CN111013583A (zh) * | 2019-12-20 | 2020-04-17 | 萍乡学院 | 一种室温高效分解一氧化碳整体式催化剂的制备方法 |
US11642655B2 (en) * | 2020-01-07 | 2023-05-09 | Johnson Matthey Public Limited Company | Multi-region TWC catalysts for gasoline engine exhaust gas treatments |
JP2023547301A (ja) * | 2020-10-30 | 2023-11-10 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニー | ガソリンエンジン排気ガス処理のための新規トリメタル白金族金属(pgm、platinum group metal)触媒 |
JP7355775B2 (ja) * | 2021-03-05 | 2023-10-03 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040001781A1 (en) * | 2002-06-27 | 2004-01-01 | Engelhard Corporation | Multi-zone catalytic converter |
US20110271664A1 (en) * | 2010-05-05 | 2011-11-10 | Basf Corporation | Integrated SCR and AMOX Catalyst Systems |
JP2012035206A (ja) * | 2010-08-09 | 2012-02-23 | Johnson Matthey Japan Inc | 排ガス浄化触媒 |
US20150360178A1 (en) * | 2014-06-11 | 2015-12-17 | Basf Se | Base Metal Catalyst |
US20170296968A1 (en) * | 2016-04-13 | 2017-10-19 | Toyota Jidosha Kabushiki Kaisha | Catalytic converter |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010026838A1 (en) | 1996-06-21 | 2001-10-04 | Engelhard Corporation | Monolithic catalysts and related process for manufacture |
US6022825A (en) | 1998-01-08 | 2000-02-08 | Johnson Matthey Public Limited Company | Thermally durable low H2 S three-way catalysts |
BR9909986A (pt) * | 1998-04-28 | 2000-12-26 | Engelhard Corp | Catalisadores monolìticos e processo afim para a fabricação |
JP2005334801A (ja) | 2004-05-28 | 2005-12-08 | Cataler Corp | 排ガス浄化用触媒 |
US20080044330A1 (en) * | 2006-08-21 | 2008-02-21 | Shau-Lin Franklin Chen | Layered catalyst composite |
JP4858463B2 (ja) * | 2007-04-27 | 2012-01-18 | マツダ株式会社 | 排気ガス浄化用触媒およびその製造方法 |
US7922988B2 (en) | 2007-08-09 | 2011-04-12 | Michel Deeba | Multilayered catalyst compositions |
US9440192B2 (en) * | 2009-01-16 | 2016-09-13 | Basf Corporation | Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems |
KR101922828B1 (ko) | 2010-02-01 | 2018-11-27 | 존슨 맛쎄이 퍼블릭 리미티드 컴파니 | 압출된 scr 필터 |
JP5195873B2 (ja) * | 2010-11-05 | 2013-05-15 | トヨタ自動車株式会社 | 自動車排ガス浄化用触媒 |
US8557204B2 (en) | 2010-11-22 | 2013-10-15 | Umicore Ag & Co. Kg | Three-way catalyst having an upstream single-layer catalyst |
JP5287884B2 (ja) * | 2011-01-27 | 2013-09-11 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
US8722000B2 (en) * | 2011-03-29 | 2014-05-13 | Basf Corporation | Multi-component filters for emissions control |
GB2497597A (en) * | 2011-12-12 | 2013-06-19 | Johnson Matthey Plc | A Catalysed Substrate Monolith with Two Wash-Coats |
WO2013093597A2 (en) | 2011-12-22 | 2013-06-27 | Johnson Matthey Public Limited Company | Improved nox trap |
JP5807782B2 (ja) | 2011-12-28 | 2015-11-10 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
GB201207313D0 (en) | 2012-04-24 | 2012-06-13 | Johnson Matthey Plc | Filter substrate comprising three-way catalyst |
JP5780247B2 (ja) | 2013-01-23 | 2015-09-16 | トヨタ自動車株式会社 | 触媒コンバーター |
GB201401115D0 (en) * | 2014-01-23 | 2014-03-12 | Johnson Matthey Plc | Diesel oxidation catalyst and exhaust system |
GB2533448B (en) * | 2014-08-07 | 2017-06-28 | Johnson Matthey Plc | Zoned catalyst for treating exhaust gas |
KR20170041900A (ko) * | 2014-08-15 | 2017-04-17 | 존슨 맛쎄이 퍼블릭 리미티드 컴파니 | 배기가스를 처리하기 위한 구역화된 촉매 |
DE112015000166T5 (de) * | 2014-08-29 | 2016-05-25 | Mazda Motor Corporation | Abgasreinigungskatalysator und Abgasreinigungsverfahren |
JP6565184B2 (ja) * | 2014-12-26 | 2019-08-28 | 日産自動車株式会社 | ハニカム型モノリス触媒およびその製造方法 |
BR112017016475B1 (pt) | 2015-02-06 | 2022-04-12 | Johnson Matthey Public Limited Company | Catalisador de três vias, sistema de exaustão, e, método para tratar um gás de exaustão. |
JP6472677B2 (ja) * | 2015-02-17 | 2019-02-20 | 株式会社キャタラー | 排ガス浄化用触媒 |
JP6964580B2 (ja) | 2016-03-18 | 2021-11-10 | 株式会社キャタラー | 排ガス浄化用触媒 |
US10737219B2 (en) | 2016-03-22 | 2020-08-11 | Cataler Corporation | Exhaust gas purifying catalyst |
BR112020009925A2 (pt) * | 2017-12-08 | 2020-11-24 | Johnson Matthey (Shanghai) Chemicals Limited | artigo catalisador para o tratamento de gás de escape, sistema de tratamento de emissão para tratar um fluxo de um gás de escape de combustão, e, método de tratamento de um gás de escape de um motor de combustão interna |
CN208057201U (zh) | 2017-12-08 | 2018-11-06 | 庄信万丰(上海)化工有限公司 | 用于汽油废气应用的新型三区两层twc催化剂 |
GB2579878A (en) * | 2018-09-28 | 2020-07-08 | Johnson Matthey Plc | Novel TWC catalysts for gasoline exhaust gas applications |
EP3733266B1 (en) * | 2019-05-03 | 2024-04-24 | Johnson Matthey Public Limited Company | Catalyst article, method and use |
US11364485B2 (en) * | 2020-04-24 | 2022-06-21 | Johnson Matthey (Shanghai) Chemicals Co. Ltd. | Multi-region catalysts for CNG engine exhaust gas treatments with improved ammonia leakage control |
-
2018
- 2018-12-07 BR BR112020009925-2A patent/BR112020009925A2/pt not_active Application Discontinuation
- 2018-12-07 CN CN202210165747.7A patent/CN114961940A/zh active Pending
- 2018-12-07 CN CN201811491415.8A patent/CN109899138A/zh active Pending
- 2018-12-07 US US15/733,192 patent/US11110447B2/en active Active
- 2018-12-07 JP JP2020530381A patent/JP2021505367A/ja active Pending
- 2018-12-07 WO PCT/CN2018/119727 patent/WO2019109998A1/zh unknown
- 2018-12-07 EP EP18886838.4A patent/EP3722571B1/en active Active
-
2021
- 2021-07-16 US US17/305,899 patent/US11577234B2/en active Active
-
2023
- 2023-09-14 JP JP2023149397A patent/JP2024001034A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040001781A1 (en) * | 2002-06-27 | 2004-01-01 | Engelhard Corporation | Multi-zone catalytic converter |
CN1671471A (zh) * | 2002-06-27 | 2005-09-21 | 恩格哈德公司 | 多区催化转换器 |
US20110271664A1 (en) * | 2010-05-05 | 2011-11-10 | Basf Corporation | Integrated SCR and AMOX Catalyst Systems |
CN102985655A (zh) * | 2010-05-05 | 2013-03-20 | 巴斯夫公司 | 集成的scr和amox催化剂系统 |
JP2012035206A (ja) * | 2010-08-09 | 2012-02-23 | Johnson Matthey Japan Inc | 排ガス浄化触媒 |
US20150360178A1 (en) * | 2014-06-11 | 2015-12-17 | Basf Se | Base Metal Catalyst |
US20170296968A1 (en) * | 2016-04-13 | 2017-10-19 | Toyota Jidosha Kabushiki Kaisha | Catalytic converter |
Also Published As
Publication number | Publication date |
---|---|
JP2024001034A (ja) | 2024-01-09 |
CN109899138A (zh) | 2019-06-18 |
JP2021505367A (ja) | 2021-02-18 |
US11577234B2 (en) | 2023-02-14 |
RU2020116420A3 (zh) | 2022-01-11 |
BR112020009925A2 (pt) | 2020-11-24 |
US20210346878A1 (en) | 2021-11-11 |
US11110447B2 (en) | 2021-09-07 |
US20210101139A1 (en) | 2021-04-08 |
WO2019109998A1 (zh) | 2019-06-13 |
EP3722571B1 (en) | 2024-02-14 |
EP3722571A4 (en) | 2021-09-01 |
RU2020116420A (ru) | 2021-11-19 |
EP3722571A1 (en) | 2020-10-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9242242B2 (en) | Catalyst for gasoline lean burn engines with improved NO oxidation activity | |
CN114961940A (zh) | 用于汽油废气应用的新型三区两层twc催化剂 | |
CN109894113B (zh) | 用于汽油机废气处理的新型多区twc催化剂 | |
JP6246192B2 (ja) | 三元触媒系 | |
KR20130105644A (ko) | 개선된 no 산화 활성을 갖는 가솔린 린번 엔진용 촉매 | |
KR20120024581A (ko) | 희박 연소 가솔린 엔진을 위한 twc의 개선된 희박 hc 전환 | |
WO2020065573A1 (en) | Novel twc catalysts for gasoline exhaust gas applications | |
CN112384298A (zh) | 用于汽油废气应用的新型pgm纳米粒子twc催化剂 | |
EP3848564B1 (en) | Catalyst | |
US11364485B2 (en) | Multi-region catalysts for CNG engine exhaust gas treatments with improved ammonia leakage control | |
CN114746630A (zh) | 具有改善H2S削减的用于汽油引擎废气处理的多区域twc催化剂 | |
CN113289621B (zh) | 用于汽油发动机废气处理的新twc催化剂 | |
CN208057201U (zh) | 用于汽油废气应用的新型三区两层twc催化剂 | |
US20230294077A1 (en) | Method of producing catalyst for exhaust gas purification | |
US11986802B2 (en) | Transition metal incorporated alumina for improved three way catalysts | |
US20220134314A1 (en) | Novel tri-metal pgm catalysts for gasoline engine exhaust gas treatments | |
RU2780479C2 (ru) | Новый двухслойный катализатор twc с тремя зонами в бензиновых устройствах, производящих выхлопной газ | |
CN117339589A (zh) | 用于cng发动机废气处理的富含铂的多区催化剂 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |