JP2021523829A - 耐熱性が改善されたゼオライト及びこれを用いた触媒複合体 - Google Patents
耐熱性が改善されたゼオライト及びこれを用いた触媒複合体 Download PDFInfo
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- JP2021523829A JP2021523829A JP2020565495A JP2020565495A JP2021523829A JP 2021523829 A JP2021523829 A JP 2021523829A JP 2020565495 A JP2020565495 A JP 2020565495A JP 2020565495 A JP2020565495 A JP 2020565495A JP 2021523829 A JP2021523829 A JP 2021523829A
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- zeolite
- catalyst
- selective reduction
- modified
- alumina sol
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- 239000010457 zeolite Substances 0.000 title claims abstract description 93
- 239000003054 catalyst Substances 0.000 title claims abstract description 74
- 239000002131 composite material Substances 0.000 title abstract description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 132
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 83
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000009467 reduction Effects 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 69
- 239000007789 gas Substances 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 26
- 229910021529 ammonia Inorganic materials 0.000 abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004202 carbamide Substances 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 description 16
- 230000003197 catalytic effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 230000006866 deterioration Effects 0.000 description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 102000002322 Egg Proteins Human genes 0.000 description 4
- 108010000912 Egg Proteins Proteins 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 210000003278 egg shell Anatomy 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- MXOSECBTSFQUJS-UHFFFAOYSA-N [O-2].[Ti+4].[V+5] Chemical compound [O-2].[Ti+4].[V+5] MXOSECBTSFQUJS-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910001680 bayerite Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 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 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- UJVRJBAUJYZFIX-UHFFFAOYSA-N nitric acid;oxozirconium Chemical compound [Zr]=O.O[N+]([O-])=O.O[N+]([O-])=O UJVRJBAUJYZFIX-UHFFFAOYSA-N 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/915—Catalyst supported on particulate filters
- B01D2255/9155—Wall flow filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
第1の方法としては、RAMミキサーおよびボールミリング工程によるゼオライト改質方法を提供する。まず、アルミナゾル溶液(30重量部)およびBEAゼオライト(100重量部)を混合し、蒸留水(DI)を添加して、30%固形分のスラリーを製造する。スラリーをRAM(Resonant Acoustic Mixing、音響共鳴振動)ミキサーで2分間処理する。アルミナボールを投入して24時間湿式ミリングした後、150℃で乾燥し、600℃で焼成してアルミナゾルがコーティングされた改質ゼオライトを完成した。新品ゼオライトを700℃から1100℃で12時間L/R条件で劣化させた。前記アルミナゾル溶液というのは、SASOLなど、通常、商業的に入手される直径5〜50ミクロンのアルミナゾルパウダーを水または酸性溶液に投入して生成される直径2〜10ナノメートルのコロイド分散液を意味する。
Claims (6)
- 窒素酸化物吸蔵型ディーゼル酸化触媒物品として、担体に配置されるゼオライトを含み、前記ゼオライトが、アルミナゾルでコーティングされたゼオライトである
ことを特徴とする窒素酸化物吸蔵型ディーゼル酸化触媒物品。 - 選択的還元触媒物品として、担体に配置されるゼオライトを含み、前記ゼオライトが、アルミナゾルでコーティングされたゼオライトである
ことを特徴とする選択的還元触媒物品。 - フィルタ型選択的還元触媒物品として、担体に配置されるゼオライトを含み、前記ゼオライトが、アルミナゾルでコーティングされたゼオライトである
ことを特徴とするフィルタ型選択的還元触媒物品。 - 窒素酸化物吸蔵型三元触媒物品、選択的還元触媒物品またはフィルタ型選択的還元触媒物品に使用されるアルミナゾルでコーティングされた
ことを特徴とするゼオライト。 - 前記ゼオライトが、H-ベータゼオライトまたはCHAゼオライトである
請求項1ないし3のいずれかに記載の触媒物品。 - 請求項1ないし3のいずれかに記載の触媒物品を含む
ことを特徴とする排気ガス処理システム。
Applications Claiming Priority (5)
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KR20180057570 | 2018-05-21 | ||
KR10-2018-0057570 | 2018-05-21 | ||
KR1020190039595A KR20190132914A (ko) | 2018-05-21 | 2019-04-04 | 내열성이 개선된 제올라이트 및 이를 이용한 촉매 복합체 |
KR10-2019-0039595 | 2019-04-04 | ||
PCT/KR2019/005919 WO2019225909A1 (ko) | 2018-05-21 | 2019-05-17 | 내열성이 개선된 제올라이트 및 이를 이용한 촉매 복합체 |
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JP2021523829A true JP2021523829A (ja) | 2021-09-09 |
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JP2020565495A Pending JP2021523829A (ja) | 2018-05-21 | 2019-05-17 | 耐熱性が改善されたゼオライト及びこれを用いた触媒複合体 |
Country Status (4)
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US (1) | US20210205794A1 (ja) |
JP (1) | JP2021523829A (ja) |
KR (1) | KR20190132914A (ja) |
CN (1) | CN112423881A (ja) |
Families Citing this family (1)
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CN114733564B (zh) * | 2022-05-10 | 2023-06-23 | 中国科学院生态环境研究中心 | 一种复合沸石scr催化剂及其制备方法与应用 |
Citations (5)
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JPH11138006A (ja) * | 1997-11-11 | 1999-05-25 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及び浄化方法 |
JPH11221466A (ja) * | 1998-02-05 | 1999-08-17 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及び排気ガス浄化方法 |
JPH11300211A (ja) * | 1998-04-24 | 1999-11-02 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及び排気ガス浄化方法 |
JP2004209403A (ja) * | 2003-01-06 | 2004-07-29 | Nissan Motor Co Ltd | 排気ガス浄化触媒 |
KR20100119378A (ko) * | 2009-04-30 | 2010-11-09 | 한국에너지기술연구원 | 디젤 차량의 배출가스 저감장치용 혼합촉매와 그 제조방법 |
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US6605207B2 (en) * | 2001-04-13 | 2003-08-12 | W. R. Grace & Co. - Conn. | Bayerite alumina clad zeolite and cracking catalysts containing same |
CN100371072C (zh) * | 2005-09-30 | 2008-02-27 | 清华大学 | 稀燃汽油车尾气排放氮氧化物选择性还原催化剂制备方法 |
CN103055849B (zh) * | 2012-12-27 | 2016-08-17 | 新奥科技发展有限公司 | 一种催化燃烧用复合催化剂及其制备方法 |
CN103372379B (zh) * | 2013-07-14 | 2015-01-28 | 浙江大学 | 一种以金属氧化物为载体的分子筛复合膜制备方法 |
JP6292159B2 (ja) * | 2015-04-13 | 2018-03-14 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
RU2018135265A (ru) * | 2016-03-09 | 2020-04-09 | Басф Корпорейшн | Катализатор типа ядро/оболочка для улавливания углеводородов и способ его получения |
WO2018011652A1 (en) * | 2016-07-13 | 2018-01-18 | Sabic Global Technologies B.V. | Double layer zeolites and preparation thereof |
-
2019
- 2019-04-04 KR KR1020190039595A patent/KR20190132914A/ko not_active Application Discontinuation
- 2019-05-17 CN CN201980034389.2A patent/CN112423881A/zh active Pending
- 2019-05-17 US US17/057,218 patent/US20210205794A1/en not_active Abandoned
- 2019-05-17 JP JP2020565495A patent/JP2021523829A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11138006A (ja) * | 1997-11-11 | 1999-05-25 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及び浄化方法 |
JPH11221466A (ja) * | 1998-02-05 | 1999-08-17 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及び排気ガス浄化方法 |
JPH11300211A (ja) * | 1998-04-24 | 1999-11-02 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及び排気ガス浄化方法 |
JP2004209403A (ja) * | 2003-01-06 | 2004-07-29 | Nissan Motor Co Ltd | 排気ガス浄化触媒 |
KR20100119378A (ko) * | 2009-04-30 | 2010-11-09 | 한국에너지기술연구원 | 디젤 차량의 배출가스 저감장치용 혼합촉매와 그 제조방법 |
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KR20190132914A (ko) | 2019-11-29 |
US20210205794A1 (en) | 2021-07-08 |
CN112423881A (zh) | 2021-02-26 |
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