JP6173336B2 - Scr触媒を含む基材モノリス - Google Patents
Scr触媒を含む基材モノリス Download PDFInfo
- Publication number
- JP6173336B2 JP6173336B2 JP2014545364A JP2014545364A JP6173336B2 JP 6173336 B2 JP6173336 B2 JP 6173336B2 JP 2014545364 A JP2014545364 A JP 2014545364A JP 2014545364 A JP2014545364 A JP 2014545364A JP 6173336 B2 JP6173336 B2 JP 6173336B2
- Authority
- JP
- Japan
- Prior art keywords
- substrate monolith
- catalyst
- zone
- exhaust system
- scr
- 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
- 239000003054 catalyst Substances 0.000 title claims description 172
- 239000000758 substrate Substances 0.000 title claims description 126
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 120
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 67
- 239000007789 gas Substances 0.000 claims description 48
- 239000000203 mixture Substances 0.000 claims description 38
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 34
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 32
- 229910052697 platinum Inorganic materials 0.000 claims description 29
- 238000002485 combustion reaction Methods 0.000 claims description 27
- 238000011144 upstream manufacturing Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 23
- 230000003647 oxidation Effects 0.000 claims description 23
- 238000007254 oxidation reaction Methods 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 239000003638 chemical reducing agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 21
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 17
- 229910021529 ammonia Inorganic materials 0.000 claims description 15
- 229910044991 metal oxide Inorganic materials 0.000 claims description 14
- 150000004706 metal oxides Chemical class 0.000 claims description 14
- 230000003197 catalytic effect Effects 0.000 claims description 13
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 239000002243 precursor Substances 0.000 claims description 11
- 238000005275 alloying Methods 0.000 claims description 10
- 229910052763 palladium Inorganic materials 0.000 claims description 10
- -1 platinum group metals Chemical class 0.000 claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012071 phase Substances 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000011065 in-situ storage Methods 0.000 claims description 5
- 239000012808 vapor phase Substances 0.000 claims description 5
- 239000011959 amorphous silica alumina Substances 0.000 claims description 3
- 231100000572 poisoning Toxicity 0.000 claims description 3
- 230000000607 poisoning effect Effects 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 139
- 238000006243 chemical reaction Methods 0.000 description 50
- 230000000694 effects Effects 0.000 description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 22
- 229910002091 carbon monoxide Inorganic materials 0.000 description 22
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 22
- 229910021536 Zeolite Inorganic materials 0.000 description 20
- 239000010457 zeolite Substances 0.000 description 20
- 239000002808 molecular sieve Substances 0.000 description 16
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 16
- 238000012360 testing method Methods 0.000 description 13
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 11
- 239000004202 carbamide Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 11
- 239000002002 slurry Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 239000004071 soot Substances 0.000 description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 9
- 230000032683 aging Effects 0.000 description 8
- 229930195733 hydrocarbon Natural products 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 239000013618 particulate matter Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 238000011068 loading method Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 5
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 229910052788 barium Inorganic materials 0.000 description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000011109 contamination Methods 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
- 238000009472 formulation Methods 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000006254 rheological additive Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 241000894007 species Species 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 206010021198 ichthyosis Diseases 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052747 lanthanoid Inorganic materials 0.000 description 2
- 150000002602 lanthanoids Chemical class 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000269350 Anura Species 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910020203 CeO Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-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
- ODUCDPQEXGNKDN-UHFFFAOYSA-N Nitrogen oxide(NO) Natural products O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 230000010757 Reduction Activity Effects 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001423 beryllium ion Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 210000001175 cerebrospinal fluid Anatomy 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910001657 ferrierite group Inorganic materials 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910001959 inorganic nitrate Inorganic materials 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 229910052680 mordenite Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 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
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
- B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- 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
-
- 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
-
- 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
- B01J23/42—Platinum
-
- 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
- B01J23/48—Silver or gold
- B01J23/50—Silver
-
- 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
- B01J23/48—Silver or gold
- B01J23/52—Gold
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/74—Noble metals
- B01J29/7415—Zeolite Beta
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/76—Iron group metals or copper
- B01J29/7615—Zeolite Beta
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/76—Iron group metals or copper
- B01J29/763—CHA-type, e.g. Chabazite, LZ-218
-
- 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
- B01J33/00—Protection of catalysts, e.g. by 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
- 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
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0036—Grinding
-
- 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
- B01J37/0246—Coatings comprising a zeolite
-
- 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
- B01J37/03—Precipitation; Co-precipitation
- B01J37/038—Precipitation; Co-precipitation to form slurries or suspensions, e.g. a washcoat
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D2255/104—Silver
-
- 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
- B01D2255/106—Gold
-
- 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
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
- B01D2255/502—Beta zeolites
-
- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
- B01J2229/186—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself not in framework positions
-
- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/30—After treatment, characterised by the means used
- B01J2229/42—Addition of matrix or binder particles
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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)
- Crystallography & Structural Chemistry (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
NO+1/2O2→NO2 (1);及び
BaO+2NO2+1/2O2→Ba(NO3)2 (2)
であり、式中、反応(1)において、酸化窒素は白金上の活性酸化部位で酸素と反応してNO2を形成する。反応(2)は、無機硝酸塩の形態の貯蔵材料によるNO2の吸蔵を伴う。
Ba(NO3)2→BaO+2NO+3/2O2又はBa(NO3)2
→BaO+2NO2+1/2O2 (3);及び
NO+CO→1/2N2+CO2 (4);
(他の反応は、Ba(NO3)2+8H2→BaO+2NH3+5H2O、続いてNH3+NOx→N2+yH2O又は2NH3+2O2+CO→N2+3H2O+CO2等を包含する)。
4NH3+4NO+O2→4N2+6H2O(すなわち、1:1 NH3:NO)(5)
4NH3+2NO+2NO2→4N2+6H2O(すなわち、1:1 NH3:NOx)(6)
8NH3+6NO2→7N2+12H2O(すなわち、4:3 NH3:NOx)(7)
2NH3+2NO2→N2O+3H2O+N2 (8)
である。
4NH3+5O2→4NO+6H2O (9)
市販のベータゼオライトを、Fe(NO3)3の水溶液に撹拌しながら添加した。混合した後、結合剤及びレオロジー改質剤を添加して、ウォッシュコート組成物を形成した。
脱イオン水中、比較的高い粒径分布に粉砕したアルミナ粒子、硝酸白金、結合剤及びレオロジー改質剤の混合物を含むウォッシュコート組成物を調製した。チタン酸アルミニウムウォールフローフィルタを、0.2g/in3のウォッシュコート負荷から5g/ft−3までの総計Pt負荷の触媒組成物で、出願人/譲受人の国際公開第2011/080525号パンフレットにおいて開示されている方法及び装置を使用してコーティングし、ここで、上流側への配向が意図されている第一端のチャネルは、それらの全長の75%にわたり、意図されているその上流端から硝酸白金及び粒子状アルミナを含むウォッシュコートでコーティングし;反対端にあって下流側へ配向されることが意図されているチャネルは、それらの全長の25%にわたり、入口チャネルと同じウォッシュコートでコーティングする。すなわち、前記方法は、(i)ハニカムモノリス基材を実質的に縦方向に把持するステップと、(ii)所定体積の液体を、基材の下端にあるチャネルの開口端を介して基材に導入するステップと、(iii)導入された液体を基材内に密封して保持するステップと、(iv)保持された液体を含有する基材を裏返しにするステップと、(v)基材の裏返しになった下端にある基材のチャネルの開口端に真空を印加して、基材のチャネルに沿って液体を取り込むステップとを含むものであった。触媒組成物をフィルタチャネル上に第一端からコーティングし、その後、コーティングされたフィルタを乾燥させた。次いで、第一端からコーティングされた乾燥したフィルタの方向を変え、前記方法を繰り返して同じ触媒を第二端からフィルタチャネルまでコーティングし、続いて乾燥させ、焼成した。
コーティングされたフィルタは、フィルタの入口チャネル及び出口チャネルの両方に適用されたウォッシュコートが、硝酸白金に加えて硝酸パラジウムを包含していたことを除き、比較例2と同じ方法を使用して調製した。入口及び出口チャネルにおけるウォッシュコート負荷は、入口表面及び出口表面の両方において5g/ft3のPt、5g/ft3のPdの負荷、すなわち、10g/ft3の全PGM負荷に達するような手法で行った。
コーティングされたフィルタは、フィルタの入口チャネル及び出口チャネルの両方に適用されたウォッシュコートが、硝酸白金に加えて硝酸パラジウムを包含していたことを除き、比較例2と同じ方法を使用して調製した。入口及び出口チャネルにおけるウォッシュコート負荷は、入口表面及び出口表面の両方において5g/ft3のPt、1g/ft3のPd負荷、すなわち、6g/ft3の全PGM負荷に達するような手法で行った。
図2において例証されている第一の合成触媒活性試験(SCAT)実験室反応器に対して試験を実施し、ここでは、実施例1のコーティングされたFe/ベータゼオライトSCR触媒のフレッシュなコアを、比較例2又は実施例3もしくは4の触媒化されたウォールフローフィルタのいずれかのコアの下流の導管内に配置した。合成ガス混合物を、30,000hr−1の触媒掃引体積(catalyst swept volume)で導管を通過させた。炉を使用して、定常温度の触媒化されたウォールフローフィルタ試料を、900℃のフィルタ入口温度で60分間加熱し(又は「エージング」させ)、その間、入口SCR触媒温度は300℃を使用した。空気(熱交換器)又は水冷却機構を使用して、フィルタとSCR触媒との間の温度降下を達成した。エージング中のガス混合物は、10%のO2、6%のH2O、6%のCO2、100ppmのCO、400ppmのNO、100ppmのHCをC1として、バランスN2であった。
市販のアルミノケイ酸塩CHAゼオライトを、Cu(NO3)2の水溶液に撹拌しながら添加した。スラリーを濾過し、次いで洗浄し、乾燥させた。所望の金属負荷を実現するために、手順を繰り返してよい。最終生成物を焼成した。混合した後、結合剤及びレオロジー改質剤を添加して、ウォッシュコート組成物を形成した。
2つのディーゼル酸化触媒を次の通りに調製した。
単層DOCを次の通りに調製した。硝酸白金及び硝酸パラジウムを、シリカ−アルミナのスラリーに添加した。ベータゼオライトをスラリーに添加して、スラリーが固体含有量の30質量%未満をゼオライトとして含むようにした。ウォッシュコートスラリーを、上記の実施例1の方法を使用して、400cpsiのフロースルー基材に投入した。投入された部分を乾燥させ、次いで500℃で焼成した。ウォッシュコートコーティング中の全白金族金属負荷は60gft−3であり、全Pt:Pd重量比は4:1であった。直径1インチ(2.54cm)×長さ3インチ(7.62cm)のコアを完成品から切り取った。得られた部分を「フレッシュ」、すなわちエージングされていないと記述する場合がある。
単層DOCを次の通りに調製した。硝酸白金及び硝酸パラジウムを、シリカ−アルミナのスラリーに添加した。ベータゼオライトをスラリーに添加して、スラリーが固体含有量の30質量%未満をゼオライトとして含むようにした。ウォッシュコートスラリーを、DOC Aについて使用したのと同じ方法を使用して、400cpsiのフロースルー基材に投入した。投入された部分を乾燥させ、次いで500℃で焼成した。単層DOC中の全PGM負荷は120g/ft3であり、Pt:Pd重量比は2:1であった。直径1インチ(2.54cm)×長さ3インチ(7.62cm)のコアを完成品から切り取った。得られた部分を「フレッシュ」、すなわちエージングされていないと記述する場合がある。
図2において例証されている第一の合成触媒活性試験(SCAT)実験室反応器に対して試験を実施し、ここでは、実施例10のコーティングされたCu/CHAゼオライトSCR触媒のエージングされたコアを、ディーゼル酸化触媒(DOC)A又はBのいずれかのコア(実施例7による)の下流の導管内に配置した。合成ガス混合物を、毎分6リットルの速度で導管を通過させた。炉を使用して、定常温度のDOC試料を、900℃の触媒出口温度で2時間加熱した(又は「エージング」させた)。SCR触媒をDOC試料の下流に配置し、炉出口とSCR入口との間のチューブの長さを調整することによって、エージングプロセス中300℃の触媒温度で把持したが、水冷式熱交換器ジャケットを適宜使用してもよい。温度は、適切に位置決めされた熱電対(T1及びT2)を使用して決定した。エージング中に使用したガス混合物は、40%の空気、50%のN2、10%のH2Oであった。
全体として捉えると、実施例3及び4ならびに比較例2との関連で図3において示されている実施例5の結果は、触媒を含有する白金族金属から下流SCR触媒への、白金族金属、主に白金の揮発によるNOx変換活性喪失の問題を低減させる上で、1:1から5:1の間のPt:Pd重量比が有益であることを指示するものである。
Claims (16)
- 自動車のリーンバーン内燃エンジン用の排気システムであって、
(i)触媒化基材モノリス;及び
(ii)長さLを有する基材モノリスにおいて、該基材モノリスの第一端によって一端に形成された実質的に均一な長さの第一ゾーンであって、内燃エンジンから放出された排ガス中の窒素の酸化物を窒素性還元剤で還元するための選択的接触還元(SCR)触媒を含む第一ゾーンと、該基材モノリスの第二端によって一端に形成されたL未満の実質的に均一な長さの第二ゾーンであって、気相白金族金属(PGM)を捕捉するための、安定化されていてもよいアルミナ、非晶質シリカ−アルミナ、安定化されていてもよいジルコニア、チタニア及びそれらの任意の二種以上の混合物からなる群から選択され、他のいかなる触媒成分に対しても担体として作用しない、少なくとも一種の粒子状金属酸化物又はそれらの任意の二種以上の混合物からなる第二ゾーンとを含む基材モノリス;
を備え、
触媒化基材モノリスが、基材モノリスの上流に配されている少なくとも一種の白金族金属(PGM)を含む触媒を含み、基材モノリスの第二端が上流側に配向され、前記少なくとも一種の白金族金属(PGM)を含む触媒が、白金(Pt)及びパラジウム(Pd)の両方を、Pt:Pd≧1.25:1の重量比で含む、排気システム。 - 触媒が、2:1から1.25:1までのPt:Pdの重量比を含む、請求項1に記載の排気システム。
- 第一ゾーンが長さLの全体にわたって延び、第二ゾーンが第一ゾーンの上を覆う、請求項1又は2に記載の排気システム。
- 第一ゾーン中のSCR触媒が、基材モノリス上にコーティングとして存在する、請求項3に記載の排気システム。
- 第一ゾーン中の前記SCR触媒が、L未満の実質的に均一な長さの前記基材モノリス上にコーティングとして存在し、前記第一ゾーンと前記第二ゾーンとの間に実質的にオーバーラップがない、請求項1又は2に記載の排気システム。
- 基材モノリスが、入口表面と出口表面を有する濾過基材モノリスであり、前記入口表面が多孔質構造によって前記出口表面から分離されている、請求項1から5のいずれかに記載の排気システム。
- 前記濾過基材モノリスがウォールフローフィルタで、前記SCR触媒が前記ウォールフローフィルタの第一端の開口チャネル内に配され、前記第二ゾーンがその第二端の開口チャネル内に配されており、前記多孔質構造が、前記第一のゾーンと前記第二のゾーンとの間の遷移を画定する、請求項6に記載の排気システム。
- 前記少なくとも一種の白金族金属(PGM)を含む触媒が、ディーゼル酸化触媒又はNOx吸収体触媒である、請求項1から7のいずれか一項に記載の排気システム。
- 前記触媒化基材モノリスの前記基材モノリスが、濾過基材モノリスである、請求項1から8のいずれか一項に記載の排気システム。
- 前記濾過基材モノリスがウォールフローフィルタである、請求項9に記載の排気システム。
- 前記触媒化基材モノリスと前記SCR触媒を含む基材モノリスとの間に、アンモニア又はその前駆体を注入するための手段を備える、請求項1から10のいずれか一項記載の排気システム。
- 請求項1から11のいずれか一項に記載の排気システムを備える、リーンバーン内燃エンジン。
- 請求項12に記載の圧縮点火エンジン。
- 使用する際に、アンモニアをその場で発生させるために前記フィルタをリッチ化された排ガスと接触させるように配設されているエンジン管理手段を備える、請求項12又は13に記載のエンジン。
- 請求項12、13又は14に記載のエンジンを備える自動車。
- リーンバーン内燃エンジンの排気システム内の内燃エンジンから放出された排ガス中の窒素の酸化物を窒素性還元剤で還元するための選択的接触還元(SCR)触媒を、白金族金属(PGM)が被毒させるのを低減させる又は防止する方法であって、前記白金族金属(PGM)は、リーンバーン内燃エンジンの排気システムの触媒化基材モノリス上に存在し、使用する際に揮発し、かつ前記SCR触媒を含む基材モノリスの表面に移動する傾向があり、前記基材モノリスは、白金(Pt)及びパラジウム(Pd)の両方を、Pt:Pd≧1.25:1の重量比で含む前記触媒化基材モノリスの下流に配されており、前記基材モノリスは長さLを有し、前記基材モノリスの第一端によって一端に形成された実質的に均一な長さの第一ゾーンであって、内燃エンジンから放出された排ガス中の窒素の酸化物を窒素性還元剤で還元するための選択的接触還元(SCR)触媒を含む前記第一ゾーンと、前記基材モノリスの第二端によって一端に形成されたL未満の実質的に均一な長さの第二ゾーンであって、気相白金族金属(PGM)を捕捉するための、安定化されていてもよいアルミナ、非晶質シリカ−アルミナ、安定化されていてもよいジルコニア、チタニア及びそれらの任意の二種以上の混合物からなる群から選択され、他のいかなる触媒成分に対しても担体として作用しない、少なくとも一種の粒子状金属酸化物又はそれらの任意の二種以上の混合物からなる前記第二ゾーンとを含み、白金族金属(PGM)を前記第二ゾーン中で捕捉及び/又は合金化するステップを含む方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161569535P | 2011-12-12 | 2011-12-12 | |
US61/569,535 | 2011-12-12 | ||
GBGB1200783.7A GB201200783D0 (en) | 2011-12-12 | 2012-01-18 | Substrate monolith comprising SCR catalyst |
GB1200783.7 | 2012-01-18 | ||
PCT/GB2012/053083 WO2013088129A2 (en) | 2011-12-12 | 2012-12-11 | Substrate monolith comprising scr catalyst |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015505723A JP2015505723A (ja) | 2015-02-26 |
JP6173336B2 true JP6173336B2 (ja) | 2017-08-02 |
Family
ID=45814153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014545364A Active JP6173336B2 (ja) | 2011-12-12 | 2012-12-11 | Scr触媒を含む基材モノリス |
Country Status (10)
Country | Link |
---|---|
US (1) | US9333461B2 (ja) |
EP (1) | EP2790826B1 (ja) |
JP (1) | JP6173336B2 (ja) |
KR (1) | KR101951515B1 (ja) |
CN (1) | CN103974768B (ja) |
BR (1) | BR112014013233B1 (ja) |
DE (1) | DE102012222804B4 (ja) |
GB (2) | GB201200783D0 (ja) |
RU (1) | RU2608998C2 (ja) |
WO (1) | WO2013088129A2 (ja) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5938819B2 (ja) | 2011-10-06 | 2016-06-22 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニーJohnson Matthey Public Limited Company | 排気ガス処理用酸化触媒 |
GB201200784D0 (en) | 2011-12-12 | 2012-02-29 | Johnson Matthey Plc | Exhaust system for a lean-burn internal combustion engine including SCR catalyst |
GB2497597A (en) | 2011-12-12 | 2013-06-19 | Johnson Matthey Plc | A Catalysed Substrate Monolith with Two Wash-Coats |
GB201200781D0 (en) | 2011-12-12 | 2012-02-29 | Johnson Matthey Plc | Exhaust system for a lean-burn ic engine comprising a pgm component and a scr catalyst |
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 |
EP2657474A1 (de) * | 2012-04-26 | 2013-10-30 | Bernhard Kahlert | Beschichteter Partikelfilter, Katalysator und Einrichtung mit denselben |
EP2925435A1 (en) * | 2012-11-29 | 2015-10-07 | Basf Se | Diesel oxidation catalyst comprising palladium, gold and ceria |
US8992869B2 (en) * | 2012-12-20 | 2015-03-31 | Caterpillar Inc. | Ammonia oxidation catalyst system |
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 |
EP3027309B1 (en) * | 2013-07-30 | 2020-05-27 | Johnson Matthey Public Limited Company | Ammonia slip catalyst |
EP2875863A1 (de) * | 2013-11-25 | 2015-05-27 | Umicore AG & Co. KG | SCR-Katalysator |
FR3017899A1 (fr) * | 2014-02-24 | 2015-08-28 | Peugeot Citroen Automobiles Sa | Structure de filtration d'un gaz et de reduction des oxydes d'azote |
US9662636B2 (en) * | 2014-04-17 | 2017-05-30 | Basf Corporation | Zoned catalyst composites |
US20150361842A1 (en) * | 2014-06-11 | 2015-12-17 | Homayoun Ahari | Exhaust system for a vehicle |
US9708949B2 (en) * | 2014-06-14 | 2017-07-18 | GM Global Technology Operations LLC | Exhaust aftertreatment system for a compression-ignition engine |
CN104258899B (zh) * | 2014-10-27 | 2016-08-31 | 四川绵阳华元航升环保科技有限公司 | 基于离子交换分子筛的尿素scr催化剂 |
GB201504658D0 (en) * | 2015-03-19 | 2015-05-06 | Johnson Matthey Plc | Exhaust system for a compression ignition engine having a capture face for volatilised platinum |
US9616386B2 (en) * | 2015-03-23 | 2017-04-11 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Catalyst for purification of exhaust gas, NOx storage-reduction catalyst, and method for purifying exhaust gas |
JP6436824B2 (ja) * | 2015-03-23 | 2018-12-12 | 日本碍子株式会社 | ハニカム構造体 |
DE102015012736A1 (de) * | 2015-10-01 | 2017-04-06 | Man Truck & Bus Ag | Verfahren zum Betreiben eines Abgasnachbehandlungssystems |
GB201521123D0 (en) * | 2015-11-30 | 2016-01-13 | Johnson Matthey Plc | Diesel oxidation catalyst having a capture region for exhaust gas impurities |
DE102015225579A1 (de) * | 2015-12-17 | 2017-06-22 | Umicore Ag & Co. Kg | Verfahren zur Verhinderung der Kontamination eines SCR-Katalysators mit Platin |
US11286831B2 (en) | 2016-05-03 | 2022-03-29 | Khalifa University of Science and Technology | Catalytic converter substrates comprising triply periodic minimal surfaces |
GB201613849D0 (en) * | 2016-08-12 | 2016-09-28 | Johnson Matthey Plc | Exhaust system for a compression ignition engine having a capture region for volatilised platinum |
GB201614677D0 (en) * | 2016-08-30 | 2016-10-12 | Johnson Matthey Plc | Oxidation catalyst for a diesel engine exhaust |
JP6458827B2 (ja) * | 2017-06-05 | 2019-01-30 | マツダ株式会社 | エンジンの排気ガス処理装置 |
US10456746B2 (en) * | 2018-02-12 | 2019-10-29 | GM Global Technology Operations LLC | Selective catalytic reduction filter for reducing nitrous oxide formation and methods of using the same |
US11161098B2 (en) * | 2018-05-18 | 2021-11-02 | Umicore Ag & Co. Kg | Three-way catalyst |
CN111219236A (zh) * | 2018-11-23 | 2020-06-02 | 汪利峰 | 柴油机尾气的后处理系统 |
BR122021025287B1 (pt) * | 2019-06-26 | 2022-11-22 | Johnson Matthey Public Limited Company | Catalisador de oxidação compósito, e, sistema de escape |
CN110560056B (zh) * | 2019-08-30 | 2022-11-01 | 无锡威孚环保催化剂有限公司 | 通用小型汽油机尾气催化剂及其制备方法 |
EP3889404A1 (en) * | 2020-03-30 | 2021-10-06 | Johnson Matthey Public Limited Company | Multi-region twc catalysts for gasoline engine exhaust gas treatments with improved h2s attenuation |
EP3936221A1 (en) | 2020-07-07 | 2022-01-12 | UMICORE AG & Co. KG | Catalysed particulate filter with enhanced passive soot functionality |
CN117940205A (zh) * | 2021-08-11 | 2024-04-26 | 巴斯夫公司 | 具有经部分涂覆的催化层的颗粒过滤器 |
WO2023050324A1 (en) * | 2021-09-30 | 2023-04-06 | Basf Corporation | Platinum group metal capture materials |
EP4310209A1 (en) | 2022-07-19 | 2024-01-24 | Yara International ASA | Method for recovering volatile pt or pd and system thereof |
EP4310210A1 (en) | 2022-07-19 | 2024-01-24 | Yara International ASA | Volatile and precious metal recovery system made of stacked silver-comprising elements |
Family Cites Families (81)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8516333D0 (en) | 1985-06-28 | 1985-07-31 | Johnson Matthey Plc | Nitric oxide |
JPS6268544A (ja) | 1985-09-20 | 1987-03-28 | Toyota Motor Corp | 排気ガス浄化用モノリス触媒 |
US4902487A (en) | 1988-05-13 | 1990-02-20 | Johnson Matthey, Inc. | Treatment of diesel exhaust gases |
CA2097609C (en) | 1991-10-03 | 1999-03-16 | Shinichi Takeshima | Device for purifying exhaust of internal combustion engine |
EP0622107B1 (en) | 1993-04-28 | 2000-02-09 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying catalyst in diesel engines |
US6667018B2 (en) | 1994-07-05 | 2003-12-23 | Ngk Insulators, Ltd. | Catalyst-adsorbent for purification of exhaust gases and method for purification of exhaust gases |
US5478549A (en) | 1994-12-15 | 1995-12-26 | E. I. Du Pont De Nemours And Company | Production of nitric oxide |
GB9511412D0 (en) | 1995-06-06 | 1995-08-02 | Johnson Matthey Plc | Improvements in emission control |
JP3387290B2 (ja) | 1995-10-02 | 2003-03-17 | トヨタ自動車株式会社 | 排ガス浄化用フィルター |
JPH09271674A (ja) | 1996-04-04 | 1997-10-21 | Toyota Motor Corp | ディーゼル排ガス用酸化触媒 |
ES2131980T3 (es) | 1996-11-11 | 1999-08-01 | Degussa | Catalizador purificador de gas de escape con una mejor capacidad de conversion para hidrocarburos |
US6093378A (en) | 1997-05-07 | 2000-07-25 | Engelhard Corporation | Four-way diesel exhaust catalyst and method of use |
US6348430B1 (en) | 1997-06-20 | 2002-02-19 | Degussa Ag | Exhaust gas treatment catalyst for internal combustion engines with two catalytically active layers on a carrier structure |
GB9805815D0 (en) | 1998-03-19 | 1998-05-13 | Johnson Matthey Plc | Manufacturing process |
JP2002540918A (ja) | 1998-07-10 | 2002-12-03 | エイエスイーシー・マニュファクチュアリング | 内燃エンジン排出ガス処理用の改善された触媒式吸着剤システム及びその製造方法 |
GB9919013D0 (en) * | 1999-08-13 | 1999-10-13 | Johnson Matthey Plc | Reactor |
JP4022707B2 (ja) | 2000-04-28 | 2007-12-19 | ヤマトミシン製造株式会社 | ミシンのルーパ引出し装置 |
US6835689B1 (en) | 2000-10-10 | 2004-12-28 | Corning Incorporated | NH3 generation catalysts for lean-burn and diesel applications |
DE10113947B4 (de) | 2001-03-22 | 2004-03-25 | Daimlerchrysler Ag | Verfahren zur Verringerung des Stickoxidgehalts im Abgas einer im Mager-Fett-Wechsel betreibbaren Brennkraftmaschine |
EP1264628A1 (de) | 2001-06-09 | 2002-12-11 | OMG AG & Co. KG | Redox-Katalysator für die selektive katalytische Reduktion der im Abgas von Dieselmotoren enthaltenen Stickoxide mittels Ammoniak sowie Verfahren zu seiner Herstellung |
EP1493484B1 (en) * | 2003-07-02 | 2007-03-07 | Haldor Topsoe A/S | Process and filter for the catalytic treatment of diesel exhaust gas |
US7229597B2 (en) | 2003-08-05 | 2007-06-12 | Basfd Catalysts Llc | Catalyzed SCR filter and emission treatment system |
US7722829B2 (en) | 2004-09-14 | 2010-05-25 | Basf Catalysts Llc | Pressure-balanced, catalyzed soot filter |
GB2406803A (en) | 2004-11-23 | 2005-04-13 | Johnson Matthey Plc | Exhaust system comprising exotherm-generating catalyst |
JP2006272064A (ja) | 2005-03-28 | 2006-10-12 | Mazda Motor Corp | 酸化触媒 |
US20070157607A1 (en) | 2006-01-11 | 2007-07-12 | Pfefferle William C | Clean air system |
JP4711860B2 (ja) | 2006-03-03 | 2011-06-29 | エヌ・イーケムキャット株式会社 | 排気ガス浄化用酸化触媒、排気ガス浄化用触媒構造体および排気ガス浄化方法 |
US7576031B2 (en) | 2006-06-09 | 2009-08-18 | Basf Catalysts Llc | Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function |
JP5210306B2 (ja) | 2006-06-29 | 2013-06-12 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | 三元触媒 |
US7550124B2 (en) | 2006-08-21 | 2009-06-23 | Basf Catalysts Llc | Layered catalyst composite |
US7758834B2 (en) | 2006-08-21 | 2010-07-20 | Basf Corporation | Layered catalyst composite |
JP5037888B2 (ja) | 2006-09-26 | 2012-10-03 | 株式会社キャタラー | 排ガス浄化用触媒 |
GB0620883D0 (en) * | 2006-10-20 | 2006-11-29 | Johnson Matthey Plc | Exhaust system for a lean-burn internal combustion engine |
US7534738B2 (en) | 2006-11-27 | 2009-05-19 | Nanostellar, Inc. | Engine exhaust catalysts containing palladium-gold |
KR100917495B1 (ko) | 2006-11-27 | 2009-09-16 | 나노스텔라 인코포레이티드 | 팔라듐-금을 포함하는 엔진 배기가스 촉매 |
JP5683111B2 (ja) | 2007-02-27 | 2015-03-11 | ビーエーエスエフ コーポレーション | 銅chaゼオライト触媒 |
CA2939726C (en) | 2007-04-26 | 2019-06-18 | Johnson Matthey Public Limited Company | Transition metal/zeolite scr catalysts |
JP2008279352A (ja) | 2007-05-10 | 2008-11-20 | Asahi Kasei Corp | リーンバーン自動車排NOx用浄化触媒 |
GB2457651A (en) | 2008-01-23 | 2009-08-26 | Johnson Matthey Plc | Catalysed wall-flow filter |
US20090196812A1 (en) * | 2008-01-31 | 2009-08-06 | Basf Catalysts Llc | Catalysts, Systems and Methods Utilizing Non-Zeolitic Metal-Containing Molecular Sieves Having the CHA Crystal Structure |
ATE460973T1 (de) | 2008-04-11 | 2010-04-15 | Umicore Ag & Co Kg | Abgasreinigungssystem zur behandlung von motorenabgasen mittels scr-katalysator |
US8776498B2 (en) | 2008-04-16 | 2014-07-15 | Ford Global Technologies, Llc | Air-injection system to improve effectiveness of selective catalytic reduction catalyst for gasoline engines |
GB0808427D0 (en) | 2008-05-09 | 2008-06-18 | Johnson Matthey Plc | Apparatus |
JP5323093B2 (ja) | 2008-12-19 | 2013-10-23 | 株式会社キャタラー | 排ガス浄化用触媒 |
CN102325580B (zh) | 2008-12-24 | 2016-04-13 | 巴斯夫公司 | 具有催化scr过滤器和下游scr催化剂的排气处理系统及方法 |
WO2010077843A2 (en) | 2008-12-29 | 2010-07-08 | Basf Catalysts Llc | Oxidation catalyst with low co and hc light-off and systems and methods |
US8844274B2 (en) | 2009-01-09 | 2014-09-30 | Ford Global Technologies, Llc | Compact diesel engine exhaust treatment system |
US8252258B2 (en) | 2009-01-16 | 2012-08-28 | Basf Corporation | Diesel oxidation catalyst with layer structure for improved hydrocarbon conversion |
US8211392B2 (en) | 2009-01-16 | 2012-07-03 | Basf Corporation | Diesel oxidation catalyst composite with layer structure for carbon monoxide and hydrocarbon conversion |
US9440192B2 (en) | 2009-01-16 | 2016-09-13 | Basf Corporation | Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems |
US8415269B2 (en) | 2009-01-21 | 2013-04-09 | WGCH Technology Limited | Palladium-gold catalyst synthesis |
US10773209B2 (en) | 2009-02-20 | 2020-09-15 | Basf Corporation | Aging-resistant catalyst article for internal combustion engines |
US8920759B2 (en) | 2009-03-02 | 2014-12-30 | GM Global Technology Operations LLC | Method and apparatus for reducing NOx emissions from a lean burning hydrocarbon fueled power source |
US9662611B2 (en) * | 2009-04-03 | 2017-05-30 | Basf Corporation | Emissions treatment system with ammonia-generating and SCR catalysts |
US8246923B2 (en) | 2009-05-18 | 2012-08-21 | Umicore Ag & Co. Kg | High Pd content diesel oxidation catalysts with improved hydrothermal durability |
DE102009033635B4 (de) | 2009-07-17 | 2020-11-05 | Umicore Ag & Co. Kg | Katalytisch aktives Partikelfilter mit Schwefelwasserstoff-Sperrfunktion, seine Verwendung und Verfahren zur Entfernung von Stickoxiden und Partikeln |
US20110064633A1 (en) * | 2009-09-14 | 2011-03-17 | Ford Global Technologies, Llc | Multi-Functional Catalyst Block and Method of Using the Same |
US20110064632A1 (en) | 2009-09-14 | 2011-03-17 | Ford Global Technologies, Llc | Staged Catalyst System and Method of Using the Same |
US8557203B2 (en) | 2009-11-03 | 2013-10-15 | Umicore Ag & Co. Kg | Architectural diesel oxidation catalyst for enhanced NO2 generator |
US8765625B2 (en) | 2009-12-10 | 2014-07-01 | Shubin, Inc. | Engine exhaust catalysts containing copper-ceria |
EP2519718A4 (en) | 2009-12-31 | 2013-09-11 | Nanostellar Inc | WITH BISMUT OR MANGAN DOTED ENGINE GAS CATALYST |
GB201000019D0 (en) | 2010-01-04 | 2010-02-17 | Johnson Matthey Plc | Coating a monolith substrate with catalyst component |
EP2531279B1 (en) | 2010-02-01 | 2015-10-07 | Johnson Matthey PLC | Extruded scr filter |
US8263033B2 (en) | 2010-02-23 | 2012-09-11 | Ford Global Technologies, Llc | Palladium-contaning oxidation catalyst |
EP2560755A1 (de) * | 2010-04-20 | 2013-02-27 | Umicore AG & Co. KG | Neue mischoxid-materialien zur selektiven katalytischen reduktion von stickoxiden in abgasen |
US8293182B2 (en) * | 2010-05-05 | 2012-10-23 | Basf Corporation | Integrated SCR and AMOx catalyst systems |
US20110286900A1 (en) | 2010-05-21 | 2011-11-24 | Basf Corporation | PGM-Zoned Catalyst for Selective Oxidation of Ammonia in Diesel Systems |
US20130095013A1 (en) | 2010-06-24 | 2013-04-18 | N.E. Chemcat Corporation | Exhaust gas purification catalyst apparatus using selective reduction catalyst, exhaust gas purification method, and diesel automobile mounted with exhaust gas purification catalyst apparatus |
JP5769708B2 (ja) | 2010-06-30 | 2015-08-26 | エヌ・イーケムキャット株式会社 | 選択還元型触媒を用いた排気ガス浄化装置及び排気ガス浄化方法 |
US8137648B2 (en) * | 2010-10-12 | 2012-03-20 | Ford Global Technologies, Llc | Diesel engine exhaust treatment system and method including a platinum group metal trapping device |
US8323599B2 (en) | 2010-11-22 | 2012-12-04 | Umicore Ag & Co. Kg | Three-way catalyst having an upstream multi-layer catalyst |
JP5310767B2 (ja) | 2011-03-29 | 2013-10-09 | トヨタ自動車株式会社 | 排ガス浄化触媒 |
EP2703077A4 (en) | 2011-04-28 | 2014-11-05 | N E Chemcat Corp | DEVICE FOR PURIFYING CLEARING GAS |
WO2012156883A1 (en) | 2011-05-13 | 2012-11-22 | Basf Se | Catalyzed soot filter with layered design |
US9114376B2 (en) * | 2011-06-05 | 2015-08-25 | Johnson Matthey Public Limited Company | Platinum group metal (PGM) catalyst for treating exhaust gas |
GB2492175B (en) | 2011-06-21 | 2018-06-27 | Johnson Matthey Plc | Exhaust system for internal combustion engine comprising catalysed filter substrate |
US9044734B2 (en) | 2011-09-23 | 2015-06-02 | Basf Se | Diesel oxidation catalyst with layered structure containing ceria composition as palladium support material for enhanced HC and CO gas conversion |
JP5938819B2 (ja) | 2011-10-06 | 2016-06-22 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニーJohnson Matthey Public Limited Company | 排気ガス処理用酸化触媒 |
GB201200784D0 (en) | 2011-12-12 | 2012-02-29 | Johnson Matthey Plc | Exhaust system for a lean-burn internal combustion engine including SCR catalyst |
GB201200781D0 (en) | 2011-12-12 | 2012-02-29 | Johnson Matthey Plc | Exhaust system for a lean-burn ic engine comprising a pgm component and a scr catalyst |
GB2497597A (en) | 2011-12-12 | 2013-06-19 | Johnson Matthey Plc | A Catalysed Substrate Monolith with Two Wash-Coats |
-
2012
- 2012-01-18 GB GBGB1200783.7A patent/GB201200783D0/en not_active Ceased
- 2012-12-11 BR BR112014013233-0A patent/BR112014013233B1/pt active IP Right Grant
- 2012-12-11 CN CN201280060777.6A patent/CN103974768B/zh active Active
- 2012-12-11 GB GB1222229.5A patent/GB2497656B/en active Active
- 2012-12-11 EP EP12812319.7A patent/EP2790826B1/en active Active
- 2012-12-11 RU RU2014128568A patent/RU2608998C2/ru active
- 2012-12-11 WO PCT/GB2012/053083 patent/WO2013088129A2/en active Application Filing
- 2012-12-11 KR KR1020147019096A patent/KR101951515B1/ko active IP Right Grant
- 2012-12-11 US US13/711,134 patent/US9333461B2/en active Active
- 2012-12-11 JP JP2014545364A patent/JP6173336B2/ja active Active
- 2012-12-11 DE DE102012222804.7A patent/DE102012222804B4/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2013088129A2 (en) | 2013-06-20 |
CN103974768B (zh) | 2016-06-29 |
DE102012222804B4 (de) | 2021-05-20 |
EP2790826B1 (en) | 2019-08-21 |
DE102012222804A1 (de) | 2013-06-27 |
KR101951515B1 (ko) | 2019-02-22 |
US9333461B2 (en) | 2016-05-10 |
EP2790826A2 (en) | 2014-10-22 |
GB2497656A (en) | 2013-06-19 |
GB201222229D0 (en) | 2013-01-23 |
RU2608998C2 (ru) | 2017-01-30 |
GB201200783D0 (en) | 2012-02-29 |
JP2015505723A (ja) | 2015-02-26 |
GB2497656B (en) | 2015-09-16 |
US20130149207A1 (en) | 2013-06-13 |
RU2014128568A (ru) | 2016-02-10 |
BR112014013233A2 (pt) | 2017-06-13 |
KR20140105554A (ko) | 2014-09-01 |
CN103974768A (zh) | 2014-08-06 |
WO2013088129A3 (en) | 2013-12-27 |
BR112014013233B1 (pt) | 2020-10-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6173336B2 (ja) | Scr触媒を含む基材モノリス | |
US10688475B2 (en) | Catalysed substrate monolith | |
JP6182537B2 (ja) | Scr触媒を備えたリーンバーン内燃機関用排気システム | |
US8986635B2 (en) | Exhaust system for a lean-burn IC engine comprising a PGM component and a SCR catalyst |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20150910 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20160713 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20160719 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20161018 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20170119 |
|
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: 20170606 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20170704 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6173336 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 |