JP2015520675A - バナジン酸塩を含む選択的触媒還元ウォールフロー型フィルター - Google Patents
バナジン酸塩を含む選択的触媒還元ウォールフロー型フィルター Download PDFInfo
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- JP2015520675A JP2015520675A JP2015514612A JP2015514612A JP2015520675A JP 2015520675 A JP2015520675 A JP 2015520675A JP 2015514612 A JP2015514612 A JP 2015514612A JP 2015514612 A JP2015514612 A JP 2015514612A JP 2015520675 A JP2015520675 A JP 2015520675A
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- vanadate
- catalyst
- earth metal
- exhaust gas
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- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 77
- 239000000203 mixture Substances 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 48
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 19
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 17
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 17
- 150000003624 transition metals Chemical class 0.000 claims abstract description 17
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 16
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 16
- 239000013618 particulate matter Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims description 53
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 229910021529 ammonia Inorganic materials 0.000 claims description 21
- 239000011230 binding agent Substances 0.000 claims description 14
- 239000012876 carrier material Substances 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 12
- 238000001354 calcination Methods 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 12
- 239000004202 carbamide Substances 0.000 claims description 11
- 230000007062 hydrolysis Effects 0.000 claims description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 150000003681 vanadium Chemical class 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims 2
- WQEVDHBJGNOKKO-UHFFFAOYSA-K vanadic acid Chemical compound O[V](O)(O)=O WQEVDHBJGNOKKO-UHFFFAOYSA-K 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 79
- 239000007789 gas Substances 0.000 description 69
- 239000011148 porous material Substances 0.000 description 18
- 239000003638 chemical reducing agent Substances 0.000 description 14
- 239000004071 soot Substances 0.000 description 13
- 238000001125 extrusion Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 10
- 238000006722 reduction reaction Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 239000003502 gasoline Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 3
- 238000006243 chemical reaction 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
- 238000001035 drying Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000002245 particle Substances 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
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 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 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- -1 platinum group metals Chemical class 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- 239000000230 xanthan gum Substances 0.000 description 2
- 229940082509 xanthan gum Drugs 0.000 description 2
- 235000010493 xanthan gum Nutrition 0.000 description 2
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 229910000502 Li-aluminosilicate Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- VZTDIZULWFCMLS-UHFFFAOYSA-N ammonium formate Chemical compound [NH4+].[O-]C=O VZTDIZULWFCMLS-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
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- 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
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
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- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
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- 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 1
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- 229910052706 scandium 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
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- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
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- 239000000454 talc Substances 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052845 zircon 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
Images
Classifications
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- 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
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/847—Vanadium, niobium or tantalum or polonium
- B01J23/8472—Vanadium
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- 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
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- B01D—SEPARATION
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- 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
- B01D53/9431—Processes characterised by a specific device
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- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
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- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
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Abstract
Description
4NO + 4NH3 + O2 → 4N2 + 6H2O
2NO2 + 4NH3 + O2 → 3N2 + 6H2O
NO + NO2 + 2NH3 → 2N2 + 3H2O
である。
(AX)(TY)(RZ)VO4
該式中、「A」はアルカリ土類金属であり、「X」はバナジン酸塩に対するアルカリ土類金属のモル比であり;
「T」は遷移金属であり、「Y」はバナジン酸塩に対する遷移金属のモル比であり;
「R」は希土類金属であり、「Z」はバナジン酸塩に対する希土類金属のモル比であり;
そして、
0≦X≦1;0≦Y≦1;0≦Z≦1;及びX+Y+Z=1である。
有機試薬、バナジン酸鉄(FeVO4)、TiO2、WO3、及び結合剤を含む乾燥原料の混合物を表1に従った量で混練槽に入れた。
有機試薬、メタバナジン酸アンモニウム(AMV)、FeVO4、TiO2、WO3、及び結合剤を含む乾燥原料の混合物を表2に従った量で混練槽に入れた。
バナジン酸鉄(FeVO4)、TiO2、WO3、及び結合剤を含む乾燥原料の混合物を表3に従った量で組み合わせた。
Claims (36)
- ウォールフロー型フィルターの形である基材と前記基材の上に配されている触媒を含み、
前記触媒は担体とバナジン酸塩成分を含み、該バナジン酸塩成分は次式:
(AX)(TY)(RZ)VO4
(式中、「A」はアルカリ土類金属であり、「X」はバナジン酸塩に対するアルカリ土類金属のモル比であり;
「T」は遷移金属であり、「Y」はバナジン酸塩に対する遷移金属のモル比であり;
「R」が希土類金属であり、「Z」がバナジン酸塩に対する希土類金属のモル比であり;
そして、
0≦X≦1;0≦Y≦1;0≦Z≦1;及びX+Y+Z=1である)によって定義される構造を有し;
前記バナジン酸塩成分は前記担体上に担持されている、フィルター。 - 「A」がMg、Ca、Sr、及びBaからなる群から選択される、請求項1に記載のフィルター。
- 「T」がFe、Bi、Al、Ga、In、Cu、Zn、Mo、Cr、Sb及びMnからなる群から選択される、請求項1に記載のフィルター。
- 「T」がFeである、請求項1に記載のフィルター。
- 「R」がErである、請求項1に記載のフィルター。
- 「Z」が0である、請求項1に記載のフィルター。
- 前記担体がTiO2、WO3及びSiO2の少なくとも一つからなる群から選択される材料を含む、請求項1に記載のフィルター。
- 前記基材が入口部と出口部を有し、前記基材が複数の入口チャンネルと複数の出口チャンネルを含む、請求項1に記載のフィルター。
- 前記触媒は前記複数の入口チャンネルの表面上には配されていない、請求項8に記載のフィルター。
- 前記触媒が前記基材の出口部で前記複数の入口チャンネルと前記複数の出口チャンネルに配されている、請求項8に記載のフィルター。
- 前記触媒が膜の形で前記複数の入口チャンネルの表面に配されている、請求項8に記載のフィルター。
- 前記基材の入口部に配された尿素加水分解触媒を更に具備する、請求項8に記載のフィルター。
- 前記基材の出口部に配されたアンモニア酸化触媒を更に具備する、請求項8に記載のフィルター。
- a.バナジン酸塩成分を担体材料と組み合わせる工程であって、該バナジン酸塩成分が次式:
(AX)(TY)(RZ)VO4
(式中、「A」はアルカリ土類金属であり、「X」はバナジン酸塩に対するアルカリ土類金属のモル比であり;
「T」は遷移金属であり、「Y」はバナジン酸塩に対する遷移金属のモル比であり;
「R」は希土類金属であり、「Z」はバナジン酸塩に対する希土類金属のモル比であり;
そして
0≦X≦1;0≦Y≦1;0≦Z≦1;及びX+Y+Z=1である)によって定義される構造を有する工程と;
b.前記バナジン酸塩成分と前記担体材料に水を加えて水性混合物を生成させる工程と;
c.前記水性混合物を基材に塗布する工程であって、該基材がウォールフロー型フィルターの形である工程と;
d.前記水性混合物の塗布後、前記基材をか焼する工程
を含む、フィルター製造方法。 - 「A」がMg、Ca、Sr、及びBaからなる群から選択される、請求項14に記載の方法。
- 「T」がFe、Bi、Al、Ga、In、Cu、Zn、Mo、Cr、Sb及びMnからなる群から選択される、請求項14に記載の方法。
- 「T」がFeである、請求項14に記載の方法。
- 前記希土類金属がErである、請求項14に記載の方法。
- 「Z」が0である、請求項14に記載の方法。
- 前記か焼が650℃から700℃の温度でなされる、請求項14に記載の方法。
- 前記か焼が1から10時間なされる、請求項20に記載の方法。
- 前記担体材料がTiO2、WO3及びSiO2からなる群から選択される材料を含む、請求項14に記載の方法。
- 工程bの前に、少なくとも一種の結合剤をバナジン酸塩成分と担体材料に加えて乾燥材料の混合物を提供することを更に含み、前記乾燥材料の混合物は、1%から10%の前記バナジン酸塩成分、50%から95%の前記担体材料、及び10%から25%の前記少なくとも一種の結合剤を含有し、該パーセンテージは乾燥重量パーセンテージである、請求項14に記載の方法。
- 前記乾燥材料の混合物が、65%から80%の前記担体材料を含み、該パーセンテージは乾燥重量パーセンテージである、請求項23に記載の方法。
- 前記乾燥材料の混合物が、0.5%から4%の前記バナジン酸塩成分を含み、該パーセンテージは乾燥重量パーセンテージである、請求項23に記載の方法。
- 前記乾燥材料の混合物は、3%から13%のWO3を更に含み、該パーセンテージは乾燥重量パーセンテージである、請求項23に記載の方法。
- 前記水性混合物が20%から45%固形分であり、該固形分パーセントは水性混合物の全重量当たりの乾燥材料の重量パーセンテージである、請求項14に記載の方法。
- a.バナジン酸塩成分を担体材料と組み合わせる工程であって、該バナジン酸塩成分が次式:
(AX)(TY)(RZ)VO4
(式中、「A」はアルカリ土類金属であり、「X」はバナジン酸塩に対するアルカリ土類金属のモル比であり;
「T」は遷移金属であり、「Y」はバナジン酸塩に対する遷移金属のモル比であり;
「R」は希土類金属であり、「Z」はバナジン酸塩に対する希土類金属のモル比であり;
そして
0≦X≦1;0≦Y≦1;0≦Z≦1;及びX+Y+Z=1である)によって定義される工程と;
b.前記バナジン酸塩成分と前記担体材料に水を加えて水性混合物を生成させる工程と;
c.前記水性混合物を有機薬剤と混合し、押出し可能な組成物を生成する工程と;
d.前記押出し可能な組成物を複数の平行チャンネルを有する本体中に押出す工程と;
e.前記本体のか焼前又は後に、前記複数の平行チャンネル中の各チャンネルの一端を閉塞する工程
を含む、フィルターの製造方法。 - 前記複数の平行チャンネル中の各チャンネルの一端の閉塞が前記本体のか焼前に実施される、請求項28に記載の方法。
- 工程bの前に、少なくとも一種の結合剤をバナジン酸塩成分と担体材料に加えて乾燥材料の混合物を提供することを更に含み、前記乾燥材料の混合物は、1%から10%の前記バナジン酸塩成分、65%から80%の前記担体材料、及び10%から25%の前記少なくとも一種の結合剤を含み、該パーセンテージが乾燥重量パーセンテージである、請求項28に記載の方法。
- 工程bの前に、可溶性バナジウム塩を乾燥材料の混合物に、前記乾燥材料の混合物が約1%の前記可溶性バナジウム塩を更に含むように加えることを含み、ここで、該パーセンテージは乾燥重量パーセンテージである、請求項30に記載の方法。
- 工程bの後に、ガラス繊維を、5%から15%のガラス繊維となる量で水性混合物に加えることを更に含み、ここで該パーセンテージは乾燥重量パーセンテージである、請求項28に記載の方法。
- 前記担体材料がTiO2とWO3の混合物であり、TiO2とWO3の重量比が4:1から99:1である、請求項28に記載の方法。
- エンジンからのNOXとパティキュレートマターを含む排気ガスを処理する方法において、前記エンジンからの前記排気ガスを請求項1に記載のフィルターと接触させて、前記NOxを減少させ、前記パティキュレートマターを収集することを含む、方法。
- エンジンからの排気ガスを処理するための排気システムにおいて、
a.エンジンの下流に配された請求項1に記載のフィルター;
b.前記フィルターの上流のアンモニア又は尿素の供給源;及び
c.エンジンからの排気ガスを前記フィルターに導くための排気ガス導管
を具備する、排気システム。 - a.エンジン;
b.エンジンの下流に配された請求項1に記載のフィルター;
c.フィルターの上流のアンモニア又は尿素の供給源;及び
d.前記エンジンからの排気ガスを前記フィルターに導くための排気ガス導管
を具備する、システム。
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CN104519998A (zh) | 2015-04-15 |
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EP2855017A2 (en) | 2015-04-08 |
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