JP5896902B2 - 排気ガス浄化用触媒及びその製造方法 - Google Patents
排気ガス浄化用触媒及びその製造方法 Download PDFInfo
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- JP5896902B2 JP5896902B2 JP2012523869A JP2012523869A JP5896902B2 JP 5896902 B2 JP5896902 B2 JP 5896902B2 JP 2012523869 A JP2012523869 A JP 2012523869A JP 2012523869 A JP2012523869 A JP 2012523869A JP 5896902 B2 JP5896902 B2 JP 5896902B2
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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
-
- 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
- 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
- B01J23/63—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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/391—Physical properties of the active metal ingredient
- B01J35/394—Metal dispersion value, e.g. percentage or fraction
-
- 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
-
- 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
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0036—Grinding
-
- 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
-
- 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
- B01J37/0244—Coatings comprising several layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/204—Alkaline earth metals
- B01D2255/2042—Barium
-
- 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
- Y02T10/12—Improving ICE efficiencies
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
- Dispersion Chemistry (AREA)
Description
BaxAlyOz
(式中、xは0.75〜1であり、yは10.9〜12であり、zは17.14〜19である)
で表わされるものが製造できる。例えばBaAl12O19、Ba0.75Al11O17.25、Ba0.79Al10.9O17.14等で表わされるものがある。
湿式粉砕処理して粒径を制御したバリウムヘキサアルミネート(BHA)スラリーを硝酸パラジウムと硝酸バリウムとの混合水溶液に分散させ、その分散液に撹拌しながらランタン安定化アルミナを添加してスラリーとした。この際のBHAの量、硝酸パラジウムの量、硝酸バリウムの量及びランタン安定化アルミナの量は第1表に示す相対量の関係を満たす量とした。第1表において、Pd/BHA質量%はBHAの質量を基準にしてパラジウムの量をPdメタルの質量に換算して算出した値であり、Ba/BHA質量%はBHAの質量を基準にしてバリウムの量をBaOの質量に換算して算出した値であり、Ba/Pdモル比は硝酸パラジウムのモル数に対する硝酸バリウムのモル数の比であり、アルミナ/BHA質量%はBHAの質量に対するランタン安定化アルミナの質量を%で表わしたものである。
BHAの量、硝酸パラジウムの量、硝酸バリウムの量及びランタン安定化アルミナの量を第2表に示す相対量の関係を満たす量とした以外は実施例1と同様にして排気ガス浄化用触媒構成体を製造し、実施例1と同様にして触媒活性を求めた。それらの結果は第2表に示す通りであった。
BHAの量、硝酸パラジウムの量、硝酸バリウムの量及びランタン安定化アルミナの量を第3表に示す相対量の関係を満たす量とした以外は実施例1と同様にして排気ガス浄化用触媒構成体を製造し、実施例1と同様にして触媒活性を求めた。それらの結果は第3表に示す通りであった。
実施例5の排気ガス浄化用触媒構成体及び比較例3の排気ガス浄化用触媒構成体について、それらの耐久前のPd分散度、並びにそれらを1,000℃に保持した電気炉にセットし、C3H6:5,000ppmC、O2:0.75%及び残余量のN2から成る完全燃焼を想定した模擬排気ガス(50s)及び空気(50s)を周期させながら流通させて25時間耐久処理した後のPd分散度を公知手段であるCOパルス吸着法(T. Takeguchi、S. Manabe、R. Kikuchi、K. Eguchi、T. Kanazawa、S. Matsumoto、Applied Catalysis A:293(2005)91.)に基づいて測定した。このPd分散度は式
Pd分散度=CO吸着量に相当するPd量(モル)/含まれているPdの総量(モル)
により計算される値である。それらの値からPd分散度劣化率を求めた。それらの結果は第4表に示す通りであった。
Claims (4)
- パラジウム及びバリウムを担持したバリウムヘキサアルミネートからなり、バリウムの担持量がBaOの質量に換算して2〜15質量%であり、前記バリウムヘキサアルミネートの質量を基準にしてパラジウムの担持量がPdメタルの質量に換算して1〜3.5質量%であり、バリウムの担持量とパラジウムの担持量とのモル比がBa/Pd=2〜4.6/1であることを特徴とする排気ガス浄化用触媒。
- 前記バリウムヘキサアルミネートが一般式
BaxAlyOz
(式中、xは0.75〜1であり、yは10.9〜12であり、zは17.14〜19である)
で表わされるものである請求項1に記載の排気ガス浄化用触媒。 - セラミックス又は金属材料からなる触媒支持体と、該触媒支持体上に担持されている請求項1又は2に記載の排気ガス浄化用触媒を主成分とする層とからなることを特徴とする排気ガス浄化用触媒構成体。
- 湿式粉砕処理したバリウムヘキサアルミネートスラリーを、水溶性パラジウム化合物及び水溶性バリウム化合物を含有する水溶液中に分散させ、バリウムヘキサアルミネートの質量を基準にしてパラジウムの担持量がPdメタルの質量に換算して1〜3.5質量%であり、バリウムの担持量がBaOの質量に換算して2〜15質量%であり、バリウムの担持量とパラジウムの担持量とのモル比がBa/Pd=2〜4.6/1であるスラリーとし、得られたスラリーをセラミックスまたは金属材料からなる触媒支持体に塗布し、乾燥させ、焼成することを特徴とする排気ガス浄化用触媒構成体の製造方法。
Priority Applications (1)
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JP2012523869A JP5896902B2 (ja) | 2010-07-08 | 2011-07-05 | 排気ガス浄化用触媒及びその製造方法 |
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JP2010156149 | 2010-07-08 | ||
JP2010156149 | 2010-07-08 | ||
PCT/JP2011/065331 WO2012005235A1 (ja) | 2010-07-08 | 2011-07-05 | 排気ガス浄化用触媒及びその製造方法 |
JP2012523869A JP5896902B2 (ja) | 2010-07-08 | 2011-07-05 | 排気ガス浄化用触媒及びその製造方法 |
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JPWO2012005235A1 JPWO2012005235A1 (ja) | 2013-09-02 |
JP5896902B2 true JP5896902B2 (ja) | 2016-03-30 |
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US (1) | US9192917B2 (ja) |
JP (1) | JP5896902B2 (ja) |
CN (1) | CN102958606A (ja) |
WO (1) | WO2012005235A1 (ja) |
Families Citing this family (5)
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DE202009005335U1 (de) * | 2009-04-07 | 2010-05-20 | Wohlfarth, Andreas | Bordstein, autark beleuchtet |
JP5992192B2 (ja) * | 2012-03-30 | 2016-09-14 | 三井金属鉱業株式会社 | パラジウム触媒 |
EP3553045B1 (en) * | 2018-04-09 | 2024-09-04 | Kemijski Institut | Process to produce methacrylic acid monomer from biomass-derived carboxylic acids |
JP2021070004A (ja) * | 2019-11-01 | 2021-05-06 | トヨタ自動車株式会社 | 排ガス浄化用触媒装置のコート層の製造方法 |
JP6986123B1 (ja) * | 2020-08-07 | 2021-12-22 | 株式会社キャタラー | 排ガス浄化用触媒 |
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JPS61245844A (ja) * | 1985-04-25 | 1986-11-01 | Babcock Hitachi Kk | 燃焼用触媒担体およびその製法 |
JPH05262517A (ja) * | 1991-10-26 | 1993-10-12 | Johnson Matthey Plc | 硫酸アルミニウムの熱分解により調製されたアルミナとその調製方法、及びそれを含む触媒とその使用方法 |
US5348717A (en) * | 1993-05-11 | 1994-09-20 | Exxon Research & Engineering Co. | Synthesis gas from particulate catalysts, and admixtures of particulate catalysts and heat transfer solids |
JPH08323205A (ja) * | 1995-06-02 | 1996-12-10 | Nissan Motor Co Ltd | 排気ガス浄化用触媒およびその製造方法 |
JPH09248462A (ja) * | 1996-03-12 | 1997-09-22 | Nissan Motor Co Ltd | 排気ガス浄化用触媒 |
JP2004122077A (ja) * | 2002-10-07 | 2004-04-22 | Mitsui Mining & Smelting Co Ltd | 窒素酸化物吸着材料 |
US20040086440A1 (en) * | 2002-10-31 | 2004-05-06 | Labarge William J. | Gas treatment device, methods for making and using the same, and a vehicle exhaust system |
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US20090226780A1 (en) * | 2005-12-29 | 2009-09-10 | Sud-Chemie Ag | Catalyst based on a hexaaluminate for the combustion of hydrocarbons and fuel cell arrangement with exhaust burner |
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JPH0699069A (ja) | 1992-09-18 | 1994-04-12 | Cataler Kogyo Kk | 排気ガス浄化用触媒 |
JPH07171392A (ja) | 1993-12-20 | 1995-07-11 | Cataler Kogyo Kk | 排気ガス浄化用触媒 |
JPH08281071A (ja) | 1995-04-18 | 1996-10-29 | Toyota Central Res & Dev Lab Inc | 排ガス浄化方法及び排ガス浄化用触媒 |
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US7923407B2 (en) * | 2006-03-16 | 2011-04-12 | Ict Co., Ltd. | Catalyst for exhaust gas purification, production method therefor, and method for purification of exhaust gas using the catalyst |
-
2011
- 2011-07-05 WO PCT/JP2011/065331 patent/WO2012005235A1/ja active Application Filing
- 2011-07-05 JP JP2012523869A patent/JP5896902B2/ja active Active
- 2011-07-05 CN CN2011800336303A patent/CN102958606A/zh active Pending
- 2011-07-05 US US13/808,824 patent/US9192917B2/en active Active
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JPS61245844A (ja) * | 1985-04-25 | 1986-11-01 | Babcock Hitachi Kk | 燃焼用触媒担体およびその製法 |
JPH05262517A (ja) * | 1991-10-26 | 1993-10-12 | Johnson Matthey Plc | 硫酸アルミニウムの熱分解により調製されたアルミナとその調製方法、及びそれを含む触媒とその使用方法 |
US5348717A (en) * | 1993-05-11 | 1994-09-20 | Exxon Research & Engineering Co. | Synthesis gas from particulate catalysts, and admixtures of particulate catalysts and heat transfer solids |
JPH08323205A (ja) * | 1995-06-02 | 1996-12-10 | Nissan Motor Co Ltd | 排気ガス浄化用触媒およびその製造方法 |
JPH09248462A (ja) * | 1996-03-12 | 1997-09-22 | Nissan Motor Co Ltd | 排気ガス浄化用触媒 |
JP2004122077A (ja) * | 2002-10-07 | 2004-04-22 | Mitsui Mining & Smelting Co Ltd | 窒素酸化物吸着材料 |
US20040086440A1 (en) * | 2002-10-31 | 2004-05-06 | Labarge William J. | Gas treatment device, methods for making and using the same, and a vehicle exhaust system |
JP2006088058A (ja) * | 2004-09-24 | 2006-04-06 | Tokyo Institute Of Technology | 触媒担体、触媒担体の製造方法、触媒、アンモニアの製造方法、および反応装置 |
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Publication number | Publication date |
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JPWO2012005235A1 (ja) | 2013-09-02 |
US9192917B2 (en) | 2015-11-24 |
CN102958606A (zh) | 2013-03-06 |
WO2012005235A1 (ja) | 2012-01-12 |
US20130116117A1 (en) | 2013-05-09 |
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