WO2017111397A1 - 압축천연가스 연소시스템 배기가스 산화촉매 - Google Patents
압축천연가스 연소시스템 배기가스 산화촉매 Download PDFInfo
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- WO2017111397A1 WO2017111397A1 PCT/KR2016/014808 KR2016014808W WO2017111397A1 WO 2017111397 A1 WO2017111397 A1 WO 2017111397A1 KR 2016014808 W KR2016014808 W KR 2016014808W WO 2017111397 A1 WO2017111397 A1 WO 2017111397A1
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- Prior art keywords
- catalyst
- platinum
- alumina
- palladium
- compressed natural
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- 239000003054 catalyst Substances 0.000 title claims abstract description 55
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000007789 gas Substances 0.000 title claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 18
- 239000003345 natural gas Substances 0.000 title claims abstract description 17
- 230000003647 oxidation Effects 0.000 title claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 71
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 57
- 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 34
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 34
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 24
- 229910052788 barium Inorganic materials 0.000 claims abstract description 22
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 22
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 230000010718 Oxidation Activity Effects 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 6
- 230000002779 inactivation Effects 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 229910000510 noble metal Inorganic materials 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 230000009849 deactivation Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052772 Samarium Inorganic materials 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 3
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KZBODYTXULRMBT-UHFFFAOYSA-N [Ba].[Pt] Chemical group [Ba].[Pt] KZBODYTXULRMBT-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 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
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
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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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
-
- 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
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/58—Platinum group metals with alkali- or alkaline earth metals
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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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
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- B01J23/63—Platinum group metals with rare earths or actinides
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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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/19—Catalysts containing parts with different compositions
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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
- B01J37/0201—Impregnation
- B01J37/0205—Impregnation in several steps
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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
- B01J37/0215—Coating
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- 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
- B01J37/0248—Coatings comprising impregnated particles
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/02—Engines characterised by means for increasing operating efficiency
- F02B43/04—Engines characterised by means for increasing operating efficiency for improving efficiency of combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
- F02B2043/103—Natural gas, e.g. methane or LNG used as a fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- the present invention relates to an exhaust gas oxidation catalyst for a compressed natural gas combustion system, and more specifically, a catalyst for a specific component is further impregnated into a catalyst for purifying exhaust gas of a conventional lean burn engine containing precious metals including platinum and palladium.
- the present invention relates to a catalyst for purifying compressed natural gas lean burn engine exhaust gas whose catalyst deactivation is suppressed.
- the combustion system herein encompasses a vehicle engine, and in some cases, a combustion system other than a vehicle is also called a static combustion system, separately from an automobile, that is, a dynamic combustion system.
- 1524054 are supported on a ceramic carrier, and the first alumina is supported.
- a ceramic carrier Contains cocatalysts selected from the group consisting of barium, nickel, lanthanum, samarium and yttrium. Air excess conditions Compressed natural air to improve oxidation activity for methane, a component of exhaust gas of compressed natural gas automobiles or stationary combustion systems It is possible to provide a catalyst for improving the oxidation activity of a gas automobile or stationary combustion system.
- catalyst durability can be improved by adding a barium-based promoter to a platinum-supported support.
- the first alumina impregnated with platinum is a barium promoter.
- the present invention is characterized in that the platinum and palladium impregnated in each alumina is 1: 1 to 1:10 by weight ratio.
- the barium promoter is further added as 1 to 20% by weight of platinum, and alumina impregnated with platinum and alumina impregnated with palladium is 15:15 to 15: 150 by weight. .
- FIG. 5 is a schematic view of a CNG lean burn engine exhaust gas catalyst durability test method according to the present invention.
- the main component of the CNG lean burn engine exhaust gas purification catalyst is composed of Pt and Pd.
- the most recently developed catalyst was to introduce a promoter adjacent to the Pd component, paying attention to the fact that the Pd component has better oxidation performance than the Pt component in methane conversion.
- a catalyst in which barium, nickel, lanthanum, samarium, or yttrium components are added as a cocatalyst to a support carrying a Pd component, and these cocatalyst components change the Pd electronic state by complexing and contribute to catalyst deactivation. do.
- the inventors found that, unexpectedly, the catalyst durability improved as a result of the introduction of the promoter component, especially barium, adjacent to the platinum component other than palladium.
- the first alumina is impregnated with Pt and a cocatalyst precursor material, especially barium acetate, and the second alumina is impregnated with Pd to mix them, and then ceria is added and uniformly milled.
- a catalyst may be prepared.
- the platinum and palladium impregnated in each alumina are 1: 1 to 1:10 by weight part ratio, and the barium promoter is further added to the support carrying platinum at 1 to 20% by weight of platinum, and platinum Barium-impregnated alumina and palladium-impregnated alumina are preferably 15:15 to 15: 150 by weight.
- the promoter according to the present invention is less than 1% by weight of platinum, the promoter function is not exerted, and when it exceeds 20% by weight of platinum, durability is greatly deteriorated.
- the catalyst structure according to the present invention is impregnated with a barium component as a promoter component only on a support impregnated with a platinum component, and not supported on other precious metals such as palladium-impregnated supports.
- the platinum-barium-impregnated alumina and palladium-impregnated alumina described above are parts by weight in the optimum range obtained through various experiments. Without being bound by any theory, the promoter component enhances catalyst durability by interacting with the platinum component.
- FIGS. 1 to 4 illustrate the catalytic activity over time of the CNG lean burn engine exhaust catalyst according to the embodiments of the present invention.
- the test results shown in FIGS. 1 to 4 are hydrothermally aged at 850 ° C./10 hrs, 10% water for the catalyst according to the present invention, and the feed gas is 5,000 ppm CH 4 , 15% O 2 , 10% H 2 O, Tested at space velocity SV: 60,000 1 / hr in N 2 balance, delta T means temperature difference between catalyst outlet and catalyst inlet.
- 5 is a schematic diagram of a durability test.
- the cocatalyst according to the present invention is that barium is additionally impregnated into the platinum impregnated support.
- the effect of inhibiting deactivation by Ba as a cocatalyst added to the platinum component was significantly higher in durability than Ba as a cocatalyst added to the conventional palladium component.
- Such a present invention will be described in more detail based on Examples, but the present invention is not limited by the following Examples.
- precursors of metals used as noble metals and cocatalysts are not limited to the examples, and are variously used such as nitrates, acetates, chlorides, sulfates, and the like.
- the case of a lean burn engine vehicle is illustrated, but not limited thereto, and the present invention can be applied to all combustion systems using compressed natural gas as fuel.
- Pt-impregnated activated alumina and Pd-Ba were impregnated with 15.0 g / l of the first alumina powder and 80.0 g / l of the chloroplatinic acid and the second alumina powder with palladium nitrate and barium acetate (10 wt% of Pd).
- Activated alumina impregnated was prepared, and a slurry was prepared by dispersing ceria powder (5% by weight of alumina) in water. At this time, the weight ratio of platinum and palladium is 1: 5.
- the treated slurry is coated on cordierite honeycomb, dried at 150 ° C. to 160 ° C. for about 10 minutes, and then at 530 ° C. to 550 ° C.
- the comparative catalyst was completed by baking for about 40 to 60 minutes.
- the content of barium is 1% by weight of Pt
- the weight ratio of platinum and palladium is 1: 7
- the second alumina powder content of the support of palladium 120g / L
- the promoter barium The position of was changed to complete the catalyst of platinum-barium structure, and the durability was tested. The results are shown in FIG. Surprisingly, durability was improved by the change of the barium promoter component from the palladium impregnation position to the platinum impregnation position.
- the promoter contributes to catalyst durability by forming complexes with palladium to alter the electronic state, but unexpectedly, it has been found that impregnation of the barium promoter with platinum can inhibit catalyst deactivation.
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- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
Claims (3)
- 백금이 함침된 제1 알루미나, 팔라듐이 함침된 제2 알루미나 및 세리아 성분이 세라믹 담체에 담지되고, 상기 제1 알루미나에는 바륨 조촉매가 담지되며, 공기 과잉조건 압축천연가스 자동차 또는 정치 연소시스템 배기가스의 성분인 메탄에 대한 산화활성 개선용도의 공기 과잉조건 압축천연가스 자동차 또는 정치 연소시스템 배기가스 산화활성 개선 촉매.
- 제1항에 있어서, 상기 조촉매는 백금의 1~10중량%로 부가되는 것을 특징으로 하는, 공기 과잉조건 압축천연가스 자동차 또는 정치 연소시스템 배기가스 산화활성 개선 촉매.
- 제1항에 있어서, 각각의 알루미나에 함침된 백금 및 팔라듐은 중량부 비율로 1:1 내지 1:10 인 것을 특징으로 하는, 공기과잉조건 압축천연가스 자동차 또는 정치 연소시스템 배기가스 산화활성 개선 촉매.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16879264.6A EP3395440A4 (en) | 2015-12-23 | 2016-12-16 | OXIDATION CATALYST FOR EXHAUST GAS OF COMPRESSED NATURAL GAS COMBUSTION SYSTEM |
US16/064,269 US10751701B2 (en) | 2015-12-23 | 2016-12-16 | Oxidation catalyst for compressed natural gas combustion system exhaust gas |
BR112018012623-3A BR112018012623B1 (pt) | 2015-12-23 | 2016-12-16 | catalisador de oxidação para gás de escape de sistema de combustão de gás natural comprimido |
RU2018122488A RU2704258C1 (ru) | 2015-12-23 | 2016-12-16 | Катализатор окисления выхлопного газа из системы сгорания сжатого природного газа |
CN201680075915.6A CN108472630B (zh) | 2015-12-23 | 2016-12-16 | 用于压缩天然气燃烧系统废气的氧化催化剂 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2015-0184454 | 2015-12-23 | ||
KR1020150184454A KR101825469B1 (ko) | 2015-12-23 | 2015-12-23 | 압축천연가스 연소시스템 배기가스 산화촉매 |
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KR102305781B1 (ko) * | 2019-07-30 | 2021-09-30 | 한국조선해양 주식회사 | 메탄 산화 촉매 재생 시스템 및 이를 포함하는 메탄 산화 반응 장치 |
RU2738984C1 (ru) * | 2019-12-05 | 2020-12-21 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Способ производства автомобильного трехмаршрутного катализатора |
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KR101825469B1 (ko) | 2018-02-05 |
KR20170075148A (ko) | 2017-07-03 |
EP3395440A1 (en) | 2018-10-31 |
EP3395440A4 (en) | 2019-08-07 |
BR112018012623A2 (pt) | 2018-12-04 |
RU2704258C1 (ru) | 2019-10-25 |
CN108472630A (zh) | 2018-08-31 |
CN108472630B (zh) | 2021-10-22 |
BR112018012623B1 (pt) | 2021-01-19 |
US10751701B2 (en) | 2020-08-25 |
US20190001304A1 (en) | 2019-01-03 |
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