JP5735983B2 - NOxトラップ - Google Patents
NOxトラップ Download PDFInfo
- Publication number
- JP5735983B2 JP5735983B2 JP2012545444A JP2012545444A JP5735983B2 JP 5735983 B2 JP5735983 B2 JP 5735983B2 JP 2012545444 A JP2012545444 A JP 2012545444A JP 2012545444 A JP2012545444 A JP 2012545444A JP 5735983 B2 JP5735983 B2 JP 5735983B2
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- nox trap
- substrate monolith
- zone
- nox
- 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.)
- Active
Links
- 239000000758 substrate Substances 0.000 claims description 49
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 39
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 39
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 37
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 25
- 229910052717 sulfur Inorganic materials 0.000 claims description 25
- 239000011593 sulfur Substances 0.000 claims description 25
- 238000011144 upstream manufacturing Methods 0.000 claims description 20
- 229910052684 Cerium Inorganic materials 0.000 claims description 19
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 238000011049 filling Methods 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 13
- 239000010948 rhodium Substances 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 12
- 229910052703 rhodium Inorganic materials 0.000 claims description 12
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000011232 storage material Substances 0.000 claims description 10
- 238000010304 firing Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 2
- 229910052772 Samarium Inorganic materials 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- -1 magnesium aluminate Chemical class 0.000 claims description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 2
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 2
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 29
- 239000007789 gas Substances 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 17
- 239000003054 catalyst Substances 0.000 description 16
- 238000003860 storage Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 238000006477 desulfuration reaction Methods 0.000 description 14
- 230000023556 desulfurization Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- MXQGCMQXTPTJJT-UHFFFAOYSA-N 1-(2,3-dihydro-1,4-benzodioxin-3-ylmethyl)-3-hydroxythieno[3,2-d]pyrimidine-2,4-dione Chemical compound C1OC2=CC=CC=C2OC1CN1C(=O)N(O)C(=O)C2=C1C=CS2 MXQGCMQXTPTJJT-UHFFFAOYSA-N 0.000 description 9
- 101150035458 lnt1 gene Proteins 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 101150094154 lnt2 gene Proteins 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 4
- 239000003225 biodiesel Substances 0.000 description 4
- 229910000420 cerium oxide Inorganic materials 0.000 description 4
- 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 4
- 239000003502 gasoline Substances 0.000 description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000010718 Oxidation Activity Effects 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052792 caesium Inorganic materials 0.000 description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 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 2
- 238000011156 evaluation Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical class O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 230000010757 Reduction Activity Effects 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 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
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229910003447 praseodymium oxide Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000035924 thermogenesis Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
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
- B01J23/58—Platinum group metals with alkali- or alkaline earth metals
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides 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
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9422—Processes characterised by a specific catalyst for removing nitrogen oxides by NOx storage or reduction by cyclic switching between lean and rich exhaust gases (LNT, NSC, NSR)
-
- 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]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
-
- 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
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- B01J35/19—Catalysts containing parts with different compositions
-
- 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
- B01J37/024—Multiple impregnation or coating
- B01J37/0242—Coating followed by impregnation
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—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
- 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
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- 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
- B01D2255/1021—Platinum
-
- 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
- B01D2255/202—Alkali metals
-
- 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
-
- 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
- B01D2255/2063—Lanthanum
-
- 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
- B01D2255/206—Rare earth metals
- B01D2255/2066—Praseodymium
-
- 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
- B01D2255/2068—Neodymium
-
- 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
- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2092—Aluminium
-
- 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
- B01D2255/908—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
- B01D2255/91—NOx-storage component incorporated in the catalyst
-
- 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
-
- 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
-
- 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)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Ceramic Engineering (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
【図1】図1は、第1層(下部層)に存在するセリアゾルを有する2、2層のリーンNOxトラップ、1に対する合成触媒活性度テスト装置において、約500℃で脱硫過程の数に対して表示された、繰り返されたSox/deSOxサイクルによるNOx変換率の損失を示す。
【図2】図2は、セリアゾルを有する場合と、そうでない場合とで、リーンNOxトラップの800℃でエージングされた第1層のCO変換率を比較したグラフである。
【発明を実施するための形態】
実施例1−リーンNOxトラップの製造
平方インチあたり400セル(cell)のフロースルーコーディエライト基材モノリスが、2gin−3のアルミナ、2gin−3の粒子状セリア、90gft−3のPt、25gft−3のPdおよび800gft−3のBaを含む第1層(下部層)と、希土類元素でドーピングされた0.5gin−3の85重量%のジルコニア、10gft−3のRhおよび400gft−3のセリアゾルを含む第2層とからなる2層のNOxトラップの製造でコーティングされた。第1層は、元の基材(virgin substrate)モノリス上に、WO99/47260に開示された方法を利用してコーティングされ、次いで、第2層が塗布される前に、100℃で通風乾燥機で30分間乾燥し、500℃で2時間焼成され、同様の乾燥および焼成過程が繰り返された。このようなNOxトラップは、LNT1で表示された。
コア(core)がLNT1とLNT2のそれぞれから切開され、各コアは、次のような条件下、合成触媒活性度テスト(SCAT)装置を用いて交互にテストされた。
−クリーンなNOx性能を評価するために硫黄を無くして5サイクル;および
−2g/litreでサンプルに硫酸処理するために硫黄を有して5サイクル
2)500℃で5分間脱硫
50秒のリッチ/10秒のリーンの間のサイクル
3)350℃で300秒のリーン/20秒のリッチ
−脱硫したNOx性能を評価するために硫黄を無くして5サイクル
−2g/lで硫酸処理するために硫黄を有して5サイクル
4)繰り返し
使用されたガス条件を、表1にまとめた。
実施例1に記載されているように、乾燥して焼成後、LNT1およびLNT2の第1層だけでコーティングされた基材モノリスは、800℃で5時間、10%のH2O、10%のO2、平衡N2でエージングされた。基材モノリスのそれぞれは、実験室内の実験台(bench−mounted)1.9リットルのユーロ4ディーゼルエンジンから既存のNOxトラップを除去し、これを、LNT1(第1層)またはLNT2(第1層)基材モノリスに代替することによってテストされた。
Claims (17)
- 第1層がその上に付着されたハニカム基材モノリスを含む、NOxトラップであって、
第1層は、その中に均一に付着された、少なくとも1種の白金族金属と少なくとも1種のNOx貯蔵物質と、粒子状セリアまたは粒子状セリウム含有混合酸化物とを有し、
第1層は希土類酸化物の分散物を有し、
第1層は上流区域と下流区域とを有し、
前記上流区域における前記希土類酸化物分散物の充填が前記下流区域における前記希土類酸化物分散物の充填の0ないし30%である、NOxトラップ。 - 前記希土類酸化物分散物が、セリウム、プラセオジム、ネオジム、ランタン、サマリウム及びその混合物からなる群より選択される元素の酸化物を含んでなる、請求項1に記載のNOxトラップ。
- 前記上流区域と下流区域との比率が、20:80〜80:20である、請求項1または2に記載のNOxトラップ。
- 前記第1層に均一に付着された成分における前記白金族金属が、白金及び/又はパラジウムを含んでなる、請求項1から3のいずれか1項に記載のNOxトラップ。
- 前記粒子状セリウム含有混合酸化物が、ジルコニウムを含んでなる、請求項1から4のいずれか1項に記載のNOxトラップ。
- 前記少なくとも1種のNOx貯蔵物質のそれぞれが、アルカリ土類金属及びアルカリ金属からなる群より選択される、請求項1から5のいずれか1項に記載のNOxトラップ。
- 前記第1層で前記均一に付着された成分が、アルミン酸マグネシウムを含んでなる、請求項1から6のいずれか1項に記載のNOxトラップ。
- 前記第1層を覆う第2層が支持ロジウム成分を含んでおり、該支持ロジウム成分がロジウムと支持体とを含む、請求項1から7のいずれか1項に記載のNOxトラップ。
- 前記下流区域が、前記上流区域より低い熱質量を有してなるものである、請求項1から8のいずれか1項に記載のNOxトラップ。
- 前記ハニカム基材モノリスが、フロースルーハニカム基材モノリスである、請求項1から9のいずれか1項に記載のNOxトラップ。
- リーンバーン内燃機関用排気システムであって、
請求項1から10のいずれか1項に記載のNOxトラップを備えてなり、
前記上流区域が、前記下流区域の前で、前記内燃機関からの排気ガスを受入するように配置されてなる、リーンバーン内燃機関用排気システム。 - 車両であって、
リーンバーン内燃機関と、請求項11に記載の排気システムとを備えてなり、
前記内燃機関が、前記内燃機関使用中に、NOxトラップに貯蔵された硫黄を放出するために、間欠的にエンジンの燃料/空気比(ラムダ)を調整して該ラムダを通常リーン走行モード(ラムダ<1)における値から増加させるように構成された、エンジン管理手段を備えてなる、車両。 - 請求項1から10のいずれか1項に記載のNOxトラップを製造する方法であって、
前記製造方法が下記工程:
a.ハニカム基材モノリスを、少なくとも1種の白金族金属と、少なくとも1種のNOx貯蔵物質と、粒子状セリア又は粒子状セリウム含有混合酸化物とを含む均一なウォッシュコートでコーティングする工程と、
b.前記コーティングされた基材モノリスを乾燥させて焼成する工程と、
c.前記コーティングされた基材モノリスの第2区域を希土類元素の水溶液で含浸する、
又は、前記コーティングされた基材モノリスの第2区域を希土類元素酸化物のゾルと接触
させる工程と、及び
d.前記工程c.のコーティングされた基材モノリスを乾燥させて焼成する工程とを含んでなる、製造方法。 - 工程c.と工程d.との間に、前記コーティングされた基材モノリスの第1区域が希土類元素の水溶液に含浸されるか、又は、前記コーティングされた基材モノリスの第1区域が希土類元素酸化物のゾルと接触され、及び
いずれの場合にも、第1区域における希土類酸化物の充填(gin−3)が、
(i)前記第2区域における希土類酸化物の充填の30%未満、又は
(ii)前記第2区域における希土類酸化物の充填の70%超過である、
請求項13に記載の製造方法。 - 請求項1から10のいずれか1項に記載のNOxトラップを製造する方法であって、
前記製造方法が下記工程:
a.ハニカム基材モノリスの第1区域を、該ハニカム基材モノリスの第1上流端から、少なくとも1種の白金族金属と、少なくとも1種のNOx貯蔵物質と粒子状セリア又は粒子状セリウム含有混合酸化物とを含むウォッシュコートでコーティングする工程と、
b.前記部分コーティングされた基材モノリスを乾燥させて焼成する工程と、
c.前記部分コーティングされた基材モノリスの第2区域を、該ハニカム基材モノリスの第2下流端から、少なくとも1種の白金族金属と、少なくとも1種のNOx貯蔵物質と、粒子状セリア又は粒子状セリウム含有混合酸化物と希土類元素の水溶液又は希土類元素酸化物のゾルとを含むウォッシュコートでコーティングする工程と、及び
d.前記工程c.のコーティングされた基材モノリスを乾燥させて焼成する工程とを含んでなる、製造方法。 - 前記工程a.のウォッシュコートが、第1区域における希土類酸化物の充填(gin −3 )が、
(i)前記第2区域の希土類酸化物の充填の30%未満、又は
(ii)前記第2区域の希土類酸化物の充填の70%超過となる、濃度において、
希土類元素の水溶液又は希土類元素酸化物のゾルを含んでなる、
請求項15に記載の製造方法。 - 前記第1層でコーティングされた前記基材モノリスを、支持ロジウム成分を含む第2層でコーティングし、及び
前記基材モノリスを乾燥させて焼成する工程を含み、該支持されたロジウム成分がロジウムと支持体とを含む、請求項13から16のいずれか一項に記載の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0922195.3A GB0922195D0 (en) | 2009-12-21 | 2009-12-21 | Improvements in NOx traps |
GB0922195.3 | 2009-12-21 | ||
PCT/GB2010/052175 WO2011077139A1 (en) | 2009-12-21 | 2010-12-21 | NOx TRAP |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013514881A JP2013514881A (ja) | 2013-05-02 |
JP5735983B2 true JP5735983B2 (ja) | 2015-06-17 |
Family
ID=41717220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012545444A Active JP5735983B2 (ja) | 2009-12-21 | 2010-12-21 | NOxトラップ |
Country Status (10)
Country | Link |
---|---|
US (2) | US20110154807A1 (ja) |
EP (1) | EP2516043A1 (ja) |
JP (1) | JP5735983B2 (ja) |
KR (1) | KR101838558B1 (ja) |
CN (1) | CN102740953B (ja) |
BR (1) | BR112012015195A2 (ja) |
DE (1) | DE102010063805A1 (ja) |
GB (2) | GB0922195D0 (ja) |
RU (1) | RU2554576C2 (ja) |
WO (1) | WO2011077139A1 (ja) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8142619B2 (en) | 2007-05-11 | 2012-03-27 | Sdc Materials Inc. | Shape of cone and air input annulus |
US8481449B1 (en) | 2007-10-15 | 2013-07-09 | SDCmaterials, Inc. | Method and system for forming plug and play oxide catalysts |
US8652992B2 (en) | 2009-12-15 | 2014-02-18 | SDCmaterials, Inc. | Pinning and affixing nano-active material |
US9119309B1 (en) | 2009-12-15 | 2015-08-25 | SDCmaterials, Inc. | In situ oxide removal, dispersal and drying |
US9126191B2 (en) | 2009-12-15 | 2015-09-08 | SDCmaterials, Inc. | Advanced catalysts for automotive applications |
GB201021649D0 (en) * | 2010-12-21 | 2011-02-02 | Johnson Matthey Plc | NOx Absorber catalyst |
US8669202B2 (en) | 2011-02-23 | 2014-03-11 | SDCmaterials, Inc. | Wet chemical and plasma methods of forming stable PtPd catalysts |
JP2014524352A (ja) | 2011-08-19 | 2014-09-22 | エスディーシーマテリアルズ, インコーポレイテッド | 触媒作用および触媒コンバータに使用するための被覆基材ならびにウォッシュコート組成物で基材を被覆する方法 |
BR112014015601A8 (pt) * | 2011-12-22 | 2017-07-04 | Johnson Matthey Plc | captador de nox, sistema de escape para motores de combustão interna, e, método para o tratamento de um gás de escape de um motor de combustão interna |
DE102013200361B4 (de) * | 2012-03-09 | 2017-04-06 | Ford Global Technologies, Llc | Abgasnachbehandlungssystem, Kraftfahrzeug und Verfahren zur Abgasnachbehandlung |
GB201207313D0 (en) | 2012-04-24 | 2012-06-13 | Johnson Matthey Plc | Filter substrate comprising three-way catalyst |
GB2513364B (en) | 2013-04-24 | 2019-06-19 | Johnson Matthey Plc | Positive ignition engine and exhaust system comprising catalysed zone-coated filter substrate |
US9156025B2 (en) | 2012-11-21 | 2015-10-13 | SDCmaterials, Inc. | Three-way catalytic converter using nanoparticles |
US9511352B2 (en) | 2012-11-21 | 2016-12-06 | SDCmaterials, Inc. | Three-way catalytic converter using nanoparticles |
GB201221025D0 (en) | 2012-11-22 | 2013-01-09 | Johnson Matthey Plc | Zoned catalysed substrate monolith |
KR101438953B1 (ko) * | 2012-12-18 | 2014-09-11 | 현대자동차주식회사 | 저온에서의 NOx 흡장성능이 개선된 LNT촉매 |
GB2512648B (en) | 2013-04-05 | 2018-06-20 | Johnson Matthey Plc | Filter substrate comprising three-way catalyst |
GB2514177A (en) | 2013-05-17 | 2014-11-19 | Johnson Matthey Plc | Oxidation catalyst for a compression ignition engine |
US9586179B2 (en) | 2013-07-25 | 2017-03-07 | SDCmaterials, Inc. | Washcoats and coated substrates for catalytic converters and methods of making and using same |
CN106061600A (zh) | 2013-10-22 | 2016-10-26 | Sdc材料公司 | 用于重型柴油机的催化剂设计 |
CA2926135A1 (en) | 2013-10-22 | 2015-04-30 | SDCmaterials, Inc. | Compositions of lean nox trap |
KR101683488B1 (ko) | 2013-11-22 | 2016-12-07 | 현대자동차 주식회사 | 린 녹스 트랩의 탈황 장치 및 방법 |
US9687811B2 (en) | 2014-03-21 | 2017-06-27 | SDCmaterials, Inc. | Compositions for passive NOx adsorption (PNA) systems and methods of making and using same |
US9744529B2 (en) * | 2014-03-21 | 2017-08-29 | Basf Corporation | Integrated LNT-TWC catalyst |
EP2982434A1 (de) * | 2014-08-05 | 2016-02-10 | Umicore AG & Co. KG | Katalysator zur Reduktion von Stickoxiden |
EP3265212A4 (en) * | 2015-03-03 | 2019-02-13 | BASF Corporation | NOX MEMORY CATALYST, METHOD AND SYSTEMS |
CN108472641A (zh) * | 2015-12-16 | 2018-08-31 | 巴斯夫公司 | 用于贫汽油直喷式发动机的催化剂系统 |
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 |
KR102336320B1 (ko) | 2016-05-05 | 2021-12-09 | 존슨 맛쎄이 퍼블릭 리미티드 컴파니 | NOx 흡착제 촉매 |
CN109641196B (zh) * | 2016-06-17 | 2022-04-05 | 巴斯夫公司 | 钯柴油机氧化催化剂 |
US10967362B2 (en) * | 2016-07-20 | 2021-04-06 | Umicore Shokubai Japan Co., Ltd. | Catalyst for purification of exhaust gas from internal combustion engine and method for purification of exhaust gas using the catalyst |
GB201616812D0 (en) * | 2016-10-04 | 2016-11-16 | Johnson Matthey Public Limited Company | NOx adsorber catalyst |
GB2557673A (en) * | 2016-12-15 | 2018-06-27 | Johnson Matthey Plc | NOx adsorber catalyst |
GB2560943A (en) * | 2017-03-29 | 2018-10-03 | Johnson Matthey Plc | NOx adsorber catalyst |
GB2561834A (en) * | 2017-04-24 | 2018-10-31 | Johnson Matthey Plc | Passive NOx adsorber |
EP3694642A1 (en) * | 2017-10-12 | 2020-08-19 | Johnson Matthey Public Limited Company | Twc catalysts for gasoline exhaust gas applications with improved thermal durability |
WO2019093391A1 (ja) * | 2017-11-13 | 2019-05-16 | 三井金属鉱業株式会社 | 窒素酸化物吸蔵材及び排ガス浄化用触媒 |
US10399037B1 (en) * | 2018-04-20 | 2019-09-03 | GM Global Technology Operations LLC | Nitrogen oxides storage catalyst and methods of using the same |
US10953366B2 (en) | 2018-04-20 | 2021-03-23 | GM Global Technology Operations LLC | Nitrogen oxides and hydrocarbon storage catalyst and methods of using the same |
US11642655B2 (en) * | 2020-01-07 | 2023-05-09 | Johnson Matthey Public Limited Company | Multi-region TWC catalysts for gasoline engine exhaust gas treatments |
JP2023135093A (ja) * | 2022-03-15 | 2023-09-28 | トヨタ自動車株式会社 | 排ガス浄化用触媒の製造方法 |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2537510B2 (ja) * | 1987-04-15 | 1996-09-25 | マツダ株式会社 | 排気ガス浄化用触媒 |
JPH078028Y2 (ja) * | 1989-04-27 | 1995-03-01 | 日産自動車株式会社 | 排ガス浄化用触媒 |
EP0560991B9 (en) | 1991-10-03 | 2005-01-26 | Toyota Jidosha Kabushiki Kaisha | Device for purifying exhaust of internal combustion engine |
US6087298A (en) * | 1996-05-14 | 2000-07-11 | Engelhard Corporation | Exhaust gas treatment system |
GB9805815D0 (en) | 1998-03-19 | 1998-05-13 | Johnson Matthey Plc | Manufacturing process |
DE19838282A1 (de) * | 1998-08-24 | 2000-03-02 | Degussa | Stickoxid-Speichermaterial und daraus hergestellter Stickoxid-Speicherkatalysator |
JP4350250B2 (ja) * | 2000-01-27 | 2009-10-21 | 株式会社キャタラー | 排気ガス浄化用触媒 |
ATE297805T1 (de) * | 2000-03-28 | 2005-07-15 | Umicore Ag & Co Kg | Einschichtiger hochleistungskatalysator |
US6777370B2 (en) * | 2001-04-13 | 2004-08-17 | Engelhard Corporation | SOx tolerant NOx trap catalysts and methods of making and using the same |
US7276212B2 (en) * | 2001-10-01 | 2007-10-02 | Engelhard Corporation | Exhaust articles for internal combustion engines |
JP2004033872A (ja) * | 2002-07-02 | 2004-02-05 | Mazda Motor Corp | 排気ガス浄化用触媒、及びその製造方法 |
JP4214744B2 (ja) * | 2002-09-11 | 2009-01-28 | マツダ株式会社 | エンジンの排気ガス浄化装置 |
US7329629B2 (en) * | 2002-10-24 | 2008-02-12 | Ford Global Technologies, Llc | Catalyst system for lean burn engines |
JP4225099B2 (ja) * | 2003-04-09 | 2009-02-18 | トヨタ自動車株式会社 | 排ガス浄化用触媒と排ガス浄化装置及び排ガス浄化方法 |
JP4062231B2 (ja) * | 2003-10-16 | 2008-03-19 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
CA2548500C (en) * | 2003-12-05 | 2010-01-12 | Intercat, Inc. | Mixed metal oxide sorbents |
JP4052268B2 (ja) * | 2004-03-11 | 2008-02-27 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2005279437A (ja) * | 2004-03-29 | 2005-10-13 | Toyota Motor Corp | 排ガス浄化用触媒 |
US7722829B2 (en) * | 2004-09-14 | 2010-05-25 | Basf Catalysts Llc | Pressure-balanced, catalyzed soot filter |
JP4768260B2 (ja) * | 2004-12-27 | 2011-09-07 | 株式会社キャタラー | 排ガス浄化用触媒 |
CN1799689B (zh) * | 2006-01-13 | 2014-11-05 | 四川大学 | 密偶催化剂 |
FR2897104B1 (fr) | 2006-02-09 | 2008-05-16 | Peugeot Citroen Automobiles Sa | Systeme et procede d'elimination de sox (oxyde de soufre), superviseur pour ce systeme |
DE102006009934A1 (de) * | 2006-03-03 | 2007-09-06 | Daimlerchrysler Ag | Abgasnachbehandlungssystem und Verfahren zur Abgasreinigung |
JP5193437B2 (ja) * | 2006-05-29 | 2013-05-08 | 株式会社キャタラー | 排ガス浄化用触媒 |
US20080053071A1 (en) * | 2006-09-05 | 2008-03-06 | Karen Adams | System and Method for Reducing NOx Emissions |
JP4630861B2 (ja) * | 2006-11-27 | 2011-02-09 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US7718150B2 (en) * | 2007-04-17 | 2010-05-18 | Ford Global Technologies, Llc | Reverse platinum group metal zoned lean NOx trap system and method of use |
US7622096B2 (en) * | 2007-08-09 | 2009-11-24 | Basf Catalysts Llc | Multilayered catalyst compositions |
EP3536919A1 (en) * | 2008-02-05 | 2019-09-11 | BASF Corporation | Gasoline engine emissions treatment systems having particulate traps |
-
2009
- 2009-12-21 GB GBGB0922195.3A patent/GB0922195D0/en not_active Ceased
-
2010
- 2010-12-21 US US12/974,528 patent/US20110154807A1/en not_active Abandoned
- 2010-12-21 CN CN201080059008.5A patent/CN102740953B/zh active Active
- 2010-12-21 EP EP10801258A patent/EP2516043A1/en not_active Ceased
- 2010-12-21 JP JP2012545444A patent/JP5735983B2/ja active Active
- 2010-12-21 GB GB1021604.2A patent/GB2476573B/en active Active
- 2010-12-21 RU RU2012131133/05A patent/RU2554576C2/ru active
- 2010-12-21 DE DE102010063805A patent/DE102010063805A1/de not_active Withdrawn
- 2010-12-21 KR KR1020127019341A patent/KR101838558B1/ko active IP Right Grant
- 2010-12-21 WO PCT/GB2010/052175 patent/WO2011077139A1/en active Application Filing
- 2010-12-21 BR BR112012015195-9A patent/BR112012015195A2/pt not_active IP Right Cessation
-
2016
- 2016-10-28 US US15/337,091 patent/US20170043322A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2011077139A1 (en) | 2011-06-30 |
GB2476573A (en) | 2011-06-29 |
US20170043322A1 (en) | 2017-02-16 |
CN102740953B (zh) | 2015-11-25 |
CN102740953A (zh) | 2012-10-17 |
GB201021604D0 (en) | 2011-02-02 |
GB2476573B (en) | 2014-04-09 |
BR112012015195A2 (pt) | 2021-06-01 |
JP2013514881A (ja) | 2013-05-02 |
EP2516043A1 (en) | 2012-10-31 |
GB0922195D0 (en) | 2010-02-03 |
KR20120116965A (ko) | 2012-10-23 |
US20110154807A1 (en) | 2011-06-30 |
KR101838558B1 (ko) | 2018-03-14 |
DE102010063805A1 (de) | 2011-09-01 |
RU2554576C2 (ru) | 2015-06-27 |
RU2012131133A (ru) | 2014-01-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5735983B2 (ja) | NOxトラップ | |
JP6687666B2 (ja) | 車両ポジティブ点火内燃機関用排気システム | |
RU2504431C2 (ru) | УДЕРЖИВАЮЩИЕ NOx МАТЕРИАЛЫ И ЛОВУШКИ, УСТОЙЧИВЫЕ К ТЕРМИЧЕСКОМУ СТАРЕНИЮ | |
JP5909191B2 (ja) | 帯状触媒スートフィルタ | |
JP6302047B2 (ja) | 触媒化したゾーンコーティングを施したフィルタ基材を備える火花点火式エンジンおよび排気系 | |
JP5959147B2 (ja) | 内燃機関の排気ガスを清浄化する方法 | |
US20090137386A1 (en) | Catalytically coated particle filter and method for producing the same and its use | |
RU2617770C2 (ru) | Автомобильная система дополнительной каталитической обработки | |
JP6487982B1 (ja) | 排ガス浄化用触媒 | |
JP2017006904A (ja) | 車両ポジティブ点火内燃機関用排気システム | |
EP3639922B1 (en) | Exhaust gas purification system for a gasoline engine | |
EP3639920B1 (en) | Exhaust gas purification system for a gasoline engine | |
US11547969B2 (en) | Exhaust gas purification system for a gasoline engine | |
US20230340899A1 (en) | Exhaust gas purification system for a gasoline engine | |
US11649753B2 (en) | Exhaust gas purification system for a gasoline engine | |
US11377993B2 (en) | Exhaust gas purification system for a gasoline engine | |
KR20130038211A (ko) | NOx 저장 촉매 및 촉매화된 매연 필터를 포함하는 배기 시스템 | |
JP2013092090A (ja) | 触媒付きパティキュレートフィルタ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20130125 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20130218 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20131217 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20140604 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140610 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20140910 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20150324 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20150417 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5735983 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |