JP6356062B2 - コールドスタート触媒および排気システムにおけるその使用 - Google Patents
コールドスタート触媒および排気システムにおけるその使用 Download PDFInfo
- Publication number
- JP6356062B2 JP6356062B2 JP2014513681A JP2014513681A JP6356062B2 JP 6356062 B2 JP6356062 B2 JP 6356062B2 JP 2014513681 A JP2014513681 A JP 2014513681A JP 2014513681 A JP2014513681 A JP 2014513681A JP 6356062 B2 JP6356062 B2 JP 6356062B2
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- Prior art keywords
- catalyst
- zeolite
- cold start
- substrate
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003054 catalyst Substances 0.000 title claims description 205
- 239000010457 zeolite Substances 0.000 claims description 137
- 229910021536 Zeolite Inorganic materials 0.000 claims description 134
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 130
- 239000000758 substrate Substances 0.000 claims description 70
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 60
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 52
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 35
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 20
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 17
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 17
- 229910052763 palladium Inorganic materials 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 229910052697 platinum Inorganic materials 0.000 claims description 14
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 9
- -1 platinum group metals Chemical class 0.000 claims description 9
- 238000001179 sorption measurement Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 5
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 3
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910001603 clinoptilolite Inorganic materials 0.000 claims description 2
- 229910052675 erionite Inorganic materials 0.000 claims description 2
- 239000012013 faujasite Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 29
- 239000002002 slurry Substances 0.000 description 29
- 229930195733 hydrocarbon Natural products 0.000 description 25
- 150000002430 hydrocarbons Chemical class 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 23
- 239000010953 base metal Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 19
- 229910000510 noble metal Inorganic materials 0.000 description 17
- 238000011068 loading method Methods 0.000 description 16
- 239000002245 particle Substances 0.000 description 13
- 239000004215 Carbon black (E152) Substances 0.000 description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 229910021065 Pd—Fe Inorganic materials 0.000 description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 230000010718 Oxidation Activity Effects 0.000 description 7
- 229910052878 cordierite Inorganic materials 0.000 description 7
- 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 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000005470 impregnation Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 150000002736 metal compounds Chemical class 0.000 description 6
- 239000010948 rhodium Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000005342 ion exchange Methods 0.000 description 4
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 229910052703 rhodium Inorganic materials 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 229910052777 Praseodymium Inorganic materials 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- 229910052792 caesium Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052680 mordenite Inorganic materials 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 238000005549 size reduction Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 244000075898 Lantana strigocamara Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910018879 Pt—Pd Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- GNKTZDSRQHMHLZ-UHFFFAOYSA-N [Si].[Si].[Si].[Ti].[Ti].[Ti].[Ti].[Ti] Chemical compound [Si].[Si].[Si].[Ti].[Ti].[Ti].[Ti].[Ti] GNKTZDSRQHMHLZ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali 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
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HZVVJJIYJKGMFL-UHFFFAOYSA-N almasilate Chemical compound O.[Mg+2].[Al+3].[Al+3].O[Si](O)=O.O[Si](O)=O HZVVJJIYJKGMFL-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910001657 ferrierite group Inorganic materials 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 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
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 229910003445 palladium oxide Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 150000003058 platinum compounds Chemical class 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 229910052642 spodumene Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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
- 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
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Description
触媒1A:Pd−Fe/ベータゼオライト+Pt/Al2O3
ベータゼオライトを、硝酸鉄水溶液に添加し、その後、シリカ結合剤を添加して、スラリーを形成する。スラリーを、フロースルーコージエライト基材上に被覆し、190g/ft3のFeの鉄装填量を得て、Fe/ゼオライト被覆基材を乾燥し、次いで、500℃で4時間加熱することにより焼成する。次いで、パラジウムを、硝酸Pd水溶液の含浸により、Fe/ゼオライト被覆基材に添加し、50g/ft3のPd装填量を得て、Pd−Fe/ゼオライト被覆基材を乾燥し、次いで、500℃で、4時間加熱することにより焼成する。
触媒1Bを、Pd/セリア成分を完成した触媒1Aに添加することにより調製する。パラジウム/セリアを、セリアへの硝酸パラジウムのインシピエントウェットネスにより調製し、その後、乾燥し、500℃で2時間焼成する。次いで、Pd/セリアを粉砕して、平均粒度を直径10ミクロン未満にし、水に添加して、スラリーを形成する。Pd/セリアスラリー、および触媒1Aの調製からのPt/アルミナスラリーを、触媒1Aの調製からのPd−Fe/ゼオライト被覆基材上に被覆し、50g/ft3のPd装填量を得て、最終の被覆された基材を乾燥し、次いで、500℃で、4時間加熱することにより焼成して、触媒1B(ゼオライト上の50g/ft3のPdおよび190g/ft3のFe;アルミナ上の50g/ft3のPt;ならびにセリア上の50g/ft3のPdを含有する)を生成する。
ベータゼオライトモノリス(ベータゼオライトを押し出し成形して、ハニカムモノリスにすることにより形成され、例えば、米国特許第5,492,883号、第5,565,394号、および第5,633,217号を参照されたい)に、硝酸鉄水溶液を含浸させ、その後、乾燥し、500℃で、4時間加熱することにより焼成し、800g/ft3のFe装填量を得て、次いで、硝酸パラジウム溶液を含浸させ、その後、乾燥し、500℃で、4時間焼成し、50g/ft3のPd装填量を得る。
鉄含有ZSM5ゼオライト(7wt.%Fe2O3)をFe/ベータゼオライトの代わりに使用することを除き、触媒1Aの手順を反復して、触媒1D(ゼオライト上の50g/ft3のPd、170g/ft3のFe;およびアルミナ上の50g/ft3のPtを含有する)を生成する。
鉄を導入したベータゼオライト(Al原子がFeにより置換されているFe−βゼオライト)を、Fe/ベータゼオライトの代わりに使用することを除き、触媒1Aの手順を反復して、触媒1E(ゼオライトからの50g/ft3のPd、250g/ft3のFe;およびアルミナ上の50g/ft3のPtを含有する)を生成する。
比較用触媒2A:Pt/Al2O3+Pd/CeO2
比較用触媒2Aは、WO2008/047170に開示されている層状システムに類似した、コールドスタート時のNOxを抑制するための従来の触媒である。その触媒を、フロースルーコージエライト基材に被覆を行い、Pd−Fe担持押出しベータゼオライトを含まず、PdおよびPt装填量も増加されることを除き、触媒1Cの手順に従って調製する。比較用触媒2Aは、Pd/セリア上の100g/ft3のPd、およびPt/アルミナ上の100g/ft3のPtを含有する。
比較用触媒2Bは、炭化水素トラップ成分としてゼオライトを含有する、典型的なディーゼル酸化触媒である。その触媒を以下の通りに調製する。
すべての触媒を、触媒で被覆されたフロースルーコージエライト基材のコアサンプル(2.54cm×8.4cm)について試験する。触媒コアを、まず、炉内で、750℃の水熱条件(5%H2O、残りは空気)下で、フロースルー条件下で16時間エージングする。次いで、個々の排ガス成分の質量流量を調整することにより調製した供給ガス流を使用して、コアを、実験用反応器において、触媒活性について試験する。ガス流量を、21.2Lmin−1に維持し、その結果として、気体時空間速度(Gas Hourly Space Velocity)が、30,000h−1(GHSV=30,000h−1)になる。
Claims (9)
- (1)鉄とパラジウムとゼオライトとを含むゼオライト触媒と、(2)1種または複数の白金族金属と1種または複数の無機酸化物担体とを含む担持白金族金属触媒とを含む、低温でのNOxの貯蔵及びN2に対する高い選択性を有する変換のための、コールドスタート触媒であって、担持白金族金属触媒が、アルミナ上の白金及びセリア上のパラジウムから選択される、コールドスタート触媒。
- ゼオライトが、ベータゼオライト、フォージャサイト、L−ゼオライト、ZSMゼオライト、SSZ−ゼオライト、モルデナイト、チャバサイト、オフレタイト、エリオナイト、クリノプチロライト、シリカライト、リン酸アルミニウムゼオライト、メソポーラスゼオライト、金属導入ゼオライト、およびそれらの混合物からなる群から選択される、請求項1に記載のコールドスタート触媒。
- ゼオライトが、ベータゼオライト、ZSM−5、Fe−βゼオライト、SSZ−33、Y−ゼオライト、およびそれらの混合物からなる群から選択される、請求項1に記載のコールドスタート触媒。
- 請求項1に記載のコールドスタート触媒と、フロースルーまたはフィルター基材とを含む排気システム。
- フロースルー基材が、ハニカムモノリスである、請求項4に記載の排気システム。
- ゼオライト触媒および担持白金族金属触媒が、フロースルーまたはフィルター基材上に被覆される、請求項4に記載の排気システム。
- フロースルーまたはフィルター基材が、前記ゼオライト触媒から構成され、担持白金族金属触媒が、前記ゼオライト触媒フロースルーまたはフィルター基材上に被覆される、請求項4に記載の排気システム。
- 請求項1に記載のコールドスタート触媒を含む、内燃エンジン用排気システム。
- 選択触媒還元触媒システム、微粒子捕集フィルター、選択触媒還元フィルターシステム、NOx吸着触媒、三元触媒システム、またはそれらの組み合わせをさらに含む、請求項8に記載の排気システム。
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CN103285857B (zh) * | 2009-03-25 | 2015-03-25 | 本田技研工业株式会社 | 用于鞍座型车辆的废气净化催化剂 |
JP2011069270A (ja) * | 2009-09-25 | 2011-04-07 | Honda Motor Co Ltd | 排気浄化装置 |
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2011
- 2011-06-01 US US13/150,659 patent/US20120308439A1/en not_active Abandoned
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2012
- 2012-05-31 WO PCT/US2012/040137 patent/WO2012166868A1/en unknown
- 2012-05-31 CN CN201810037335.9A patent/CN108246353A/zh active Pending
- 2012-05-31 RU RU2013158340A patent/RU2612136C2/ru active
- 2012-05-31 JP JP2014513681A patent/JP6356062B2/ja active Active
- 2012-05-31 BR BR112013030901A patent/BR112013030901A2/pt not_active Application Discontinuation
- 2012-05-31 CN CN201280031306.2A patent/CN103619469A/zh active Pending
- 2012-05-31 EP EP12727495.9A patent/EP2714267B1/en active Active
- 2012-05-31 KR KR1020197020878A patent/KR20190090029A/ko not_active Application Discontinuation
- 2012-05-31 KR KR1020137035085A patent/KR102111999B1/ko active IP Right Grant
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2017
- 2017-01-23 US US15/412,830 patent/US20170128922A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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CN103619469A (zh) | 2014-03-05 |
EP2714267A1 (en) | 2014-04-09 |
RU2013158340A (ru) | 2015-07-20 |
KR102111999B1 (ko) | 2020-05-18 |
RU2612136C2 (ru) | 2017-03-02 |
US20170128922A1 (en) | 2017-05-11 |
BR112013030901A2 (pt) | 2017-03-01 |
EP2714267B1 (en) | 2024-04-24 |
KR20140035982A (ko) | 2014-03-24 |
JP2014519975A (ja) | 2014-08-21 |
CN108246353A (zh) | 2018-07-06 |
US20120308439A1 (en) | 2012-12-06 |
KR20190090029A (ko) | 2019-07-31 |
WO2012166868A1 (en) | 2012-12-06 |
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