JP2015174023A - 排ガス浄化用触媒 - Google Patents
排ガス浄化用触媒 Download PDFInfo
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- JP2015174023A JP2015174023A JP2014051563A JP2014051563A JP2015174023A JP 2015174023 A JP2015174023 A JP 2015174023A JP 2014051563 A JP2014051563 A JP 2014051563A JP 2014051563 A JP2014051563 A JP 2014051563A JP 2015174023 A JP2015174023 A JP 2015174023A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 49
- 238000000746 purification Methods 0.000 title claims abstract description 22
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000010457 zeolite Substances 0.000 claims abstract description 55
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 54
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 35
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical group [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910001431 copper ion Inorganic materials 0.000 claims abstract description 31
- 238000005342 ion exchange Methods 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims description 52
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 42
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 239000000758 substrate Substances 0.000 description 15
- 239000006185 dispersion Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 229910052726 zirconium Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910000420 cerium oxide Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 150000004706 metal oxides Chemical class 0.000 description 6
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 5
- -1 cerium oxide Chemical class 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011164 primary particle Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004299 exfoliation Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 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
- 239000011230 binding agent Substances 0.000 description 1
- UNYSKUBLZGJSLV-UHFFFAOYSA-L calcium;1,3,5,2,4,6$l^{2}-trioxadisilaluminane 2,4-dioxide;dihydroxide;hexahydrate Chemical compound O.O.O.O.O.O.[OH-].[OH-].[Ca+2].O=[Si]1O[Al]O[Si](=O)O1.O=[Si]1O[Al]O[Si](=O)O1 UNYSKUBLZGJSLV-UHFFFAOYSA-L 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- RCFVMJKOEJFGTM-UHFFFAOYSA-N cerium zirconium Chemical compound [Zr].[Ce] RCFVMJKOEJFGTM-UHFFFAOYSA-N 0.000 description 1
- 229910052676 chabazite Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001657 ferrierite group Inorganic materials 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
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- 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
- 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
- B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
- B01J29/072—Iron group metals or 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
- B01J29/82—Phosphates
- B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
- B01J29/85—Silicoaluminophosphates [SAPO compounds]
-
- 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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20715—Zirconium
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- 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
- B01D2255/20761—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2092—Aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
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- B01D2255/92—Dimensions
- B01D2255/9202—Linear dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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- 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
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- 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
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- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
〈1〉結晶子径39.1nm以下の酸化ジルコニウムが担持されている銅イオン交換型ゼオライトを有する、排ガス浄化用触媒。
〈2〉上記銅イオン交換型ゼオライトに更に酸化アルミニウムが担持されている、項目1に記載の排ガス浄化用触媒。
〈3〉窒素酸化物を含む排ガスとアンモニアとを、項目1又は2のいずれかに記載の排ガス浄化用触媒に接触させて、窒素酸化物を還元することを含む、排ガス浄化方法。
酸化ジルコニウムの結晶子径の上限は39.1nm以下とすることができ、下限は0.1nm以上、例えば1nm以上、10nm以上、20nm以上、又は30nm以上とすることができる。
銅イオン交換型ゼオライト上に、結晶子径39.1nm以下の酸化ジルコニウムに加えて、任意に他の金属酸化物、例えば、酸化セリウム、酸化アルミニウム、二酸化ケイ素、酸化ランタン、酸化バナジウム等が更に担持されていてもよい。
ゼオライトは沸石とも呼ばれ、一般に、ケイ素、酸素、アルミ等の元素が網目状に結合した骨格構造を有するアルミノケイ酸塩である。ゼオライトは、骨格構造中の負電荷を補償するように、任意の元素の陽イオン、例えば水素イオン、アルカリ金属イオン、又はアルカリ土類金属イオンもまた含んでいる。
本発明の排ガス浄化用触媒の製造方法は、結晶子径が39.1nm以下の酸化ジルコニウムを銅イオン交換型ゼオライト上に担持することができれば任意の方法を使用することができる。
硝酸ジルコニウムを含むイオン交換水を、アンモニア水を含むイオン交換水へと、すばやく撹拌しながら滴下ロートを用いて添加速度500mL/分で添加して、ジルコニウムの微細な結晶を含むpH7〜8の分散溶液を作製した。硝酸ジルコニウムの量は、最終的に酸化ジルコニウムの含有量がゼオライトの全質量を基準として5質量%となるように調整した。
添加速度及び酸化ジルコニウムの含有量を表1のように変化させて、実施例1と同様の方法で、実施例2及び比較例1〜5の排ガス浄化用触媒を作製した。
銅3.0質量%でイオン交換したSAPO−34ゼオライトを、酸素存在下500℃で2時間焼成し、1トンの圧力で圧粉成形し、得られた固体を粉砕することにより、参考例1の排ガス浄化用触媒を作製した。
実施例2、比較例1〜5、並びに参考例1の試料についてX線回折ピークを測定し、2θ≒28.2°の最も強い酸化ジルコニウムの回折ピークから、酸化ジルコニウムの結晶子径を測定した。結果を表1に示す。なお、実施例1は、実施例2と添加速度が同じであり、実施例2の酸化ジルコニウム分散溶液よりも濃度が低いことから、実施例1における酸化ジルコニウムの結晶子径は、実施例2における酸化ジルコニウムの結晶子径より小さいことが予想される。
実施例1及び2、比較例1〜5、並びに参考例1の排ガス浄化用触媒について、以下のようにNOx浄化率を測定した。すなわち、一酸化窒素500ppm、アンモニア500ppm、酸素10%、水5%、及び残部が窒素である組成を有する流入ガスを、温度600℃及び流速15L/分で、3gのペレットに接触させて選択的接触還元反応を行った。流入ガス中の一酸化窒素(ppm)及び排出ガス中の一酸化窒素(ppm)を測定し、その減少率をNOx浄化率(%)とした。結果を表1に示す。
参考例2〜5、及び比較例6〜8では、基材としてのハニカム上に排ガス浄化用触媒をコーティングし、触媒の剥離率(%)を調査した。
得られたハニカム基材のそれぞれを、250℃で1時間乾燥させ、乾燥後の質量W1(g)を測定した。ハニカム基材を室温まで冷却した後、蒸留水中で10分間超音波に曝した。ハニカム基材を自然乾燥させ、更に250℃で1時間乾燥させて、乾燥後のハニカム基材の質量W2(g)を測定した。
Claims (3)
- 結晶子径39.1nm以下の酸化ジルコニウムが担持されている銅イオン交換型ゼオライトを有する、排ガス浄化用触媒。
- 前記銅イオン交換型ゼオライトに更に酸化アルミニウムが担持されている、請求項1に記載の排ガス浄化用触媒。
- 窒素酸化物を含む排ガスとアンモニアとを、請求項1又は2のいずれかに記載の排ガス浄化用触媒に接触させて、窒素酸化物を還元することを含む、排ガス浄化方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014051563A JP5987855B2 (ja) | 2014-03-14 | 2014-03-14 | 排ガス浄化用触媒 |
US14/625,978 US20150258537A1 (en) | 2014-03-14 | 2015-02-19 | Exhaust gas purifying catalyst |
CN201510105122.1A CN104907092A (zh) | 2014-03-14 | 2015-03-11 | 废气净化用催化剂 |
DE102015103645.2A DE102015103645A1 (de) | 2014-03-14 | 2015-03-12 | Abgasreinigungskatalysator |
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JP2014051563A JP5987855B2 (ja) | 2014-03-14 | 2014-03-14 | 排ガス浄化用触媒 |
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JP2015174023A true JP2015174023A (ja) | 2015-10-05 |
JP5987855B2 JP5987855B2 (ja) | 2016-09-07 |
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US (1) | US20150258537A1 (ja) |
JP (1) | JP5987855B2 (ja) |
CN (1) | CN104907092A (ja) |
DE (1) | DE102015103645A1 (ja) |
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KR20180071384A (ko) * | 2015-11-17 | 2018-06-27 | 바스프 코포레이션 | 배기 가스 처리 촉매 |
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---|---|---|---|---|
EP3426393A4 (en) * | 2016-03-08 | 2019-12-18 | BASF Corporation | ION REPLACED MOLECULAR SCREEN CATALYST WITH REDUCED N2O EMISSIONS |
KR101846918B1 (ko) * | 2016-11-16 | 2018-04-09 | 현대자동차 주식회사 | Cu/LTA 촉매 및 이를 포함하는 배기 시스템, 그리고 Cu/LTA 촉매 제조 방법 |
KR20210014116A (ko) | 2018-05-25 | 2021-02-08 | 바스프 에스이 | 희토류 원소를 함유하는 알루미늄-풍부 제올라이트 물질 |
CN110170338A (zh) * | 2019-05-30 | 2019-08-27 | 上海纳米技术及应用国家工程研究中心有限公司 | 改性Zr-Cu/沸石双功能沸石离子交换剂的制备方法及其产品和应用 |
EP3812034A1 (en) * | 2019-10-24 | 2021-04-28 | Dinex A/S | Durable copper-scr catalyst |
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EP2127744B1 (en) * | 2007-02-01 | 2018-07-18 | Daiichi Kigenso Kagaku Kogyo Co., Ltd. | Exhaust gas purification apparatus comprising a catalyst system and exhaust gas purification method |
JP5122196B2 (ja) * | 2007-07-17 | 2013-01-16 | 本田技研工業株式会社 | NOx浄化触媒 |
JP2009162157A (ja) * | 2008-01-08 | 2009-07-23 | Honda Motor Co Ltd | 内燃機関の排気浄化装置 |
EP2492009B1 (en) * | 2009-10-21 | 2017-07-19 | Honda Motor Co., Ltd. | Exhaust gas purification catalyst and exhaust gas purification apparatus using same |
EP2335810B1 (de) | 2009-12-11 | 2012-08-01 | Umicore AG & Co. KG | Selektive katalytische Reduktion von Stickoxiden im Abgas von Dieselmotoren |
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- 2015-02-19 US US14/625,978 patent/US20150258537A1/en not_active Abandoned
- 2015-03-11 CN CN201510105122.1A patent/CN104907092A/zh active Pending
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JP2013523419A (ja) * | 2010-03-26 | 2013-06-17 | 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 | 低温用、耐水熱性、および耐被毒性のSCR触媒のためのレドックス活性カチオンのホストマトリックスとしてのZrOx、Ce−ZrOx、Ce−Zr−REOx |
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KR20180071384A (ko) * | 2015-11-17 | 2018-06-27 | 바스프 코포레이션 | 배기 가스 처리 촉매 |
JP2019502550A (ja) * | 2015-11-17 | 2019-01-31 | ビーエーエスエフ コーポレーション | 排気ガス処理触媒 |
JP7021093B2 (ja) | 2015-11-17 | 2022-02-16 | ビーエーエスエフ コーポレーション | 排気ガス処理触媒 |
JP2022033905A (ja) * | 2015-11-17 | 2022-03-02 | ビーエーエスエフ コーポレーション | 排気ガス処理触媒 |
KR102650311B1 (ko) | 2015-11-17 | 2024-03-25 | 바스프 코포레이션 | 배기 가스 처리 촉매 |
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CN104907092A (zh) | 2015-09-16 |
US20150258537A1 (en) | 2015-09-17 |
JP5987855B2 (ja) | 2016-09-07 |
DE102015103645A1 (de) | 2015-09-17 |
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