WO2007145104A1 - 排ガス用吸着材 - Google Patents
排ガス用吸着材 Download PDFInfo
- Publication number
- WO2007145104A1 WO2007145104A1 PCT/JP2007/061409 JP2007061409W WO2007145104A1 WO 2007145104 A1 WO2007145104 A1 WO 2007145104A1 JP 2007061409 W JP2007061409 W JP 2007061409W WO 2007145104 A1 WO2007145104 A1 WO 2007145104A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- adsorbent
- zeolite
- nitrogen oxides
- hydrocarbons
- Prior art date
Links
Classifications
-
- 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
- B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
-
- 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
- B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
- B01D53/9486—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start for storing hydrocarbons
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- 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
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
- B01D2255/502—Beta zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
- B01D2255/504—ZSM 5 zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/91—NOx-storage component incorporated in the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/912—HC-storage component incorporated in the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
-
- 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
- F01N2570/12—Hydrocarbons
-
- 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
-
- 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
Definitions
- the present invention relates to a technology for an adsorbent for exhaust gas that adsorbs carbon monoxide (C 0), hydrocarbon (HC), nitrogen oxide (NO x), etc. contained in exhaust gas discharged from an engine such as an automobile. .
- a catalyst made of a noble metal such as platinum (P t) or rhodium (R h) is supported on a carrier, and this is combined with the exhaust gas to make carbon monoxide, hydrocarbons, nitrogen oxides, etc. contained in the exhaust gas (
- exhaust gas purifiers that purify the exhaust gas are known, which are referred to as “substances to be purified”.
- exhaust gas regulations for automobiles have tended to be further strengthened, and further improvement in exhaust gas purification performance of exhaust gas purification devices is required.
- an effective combination of an increase in the surface area of the support, refinement of the noble metal particles (increase in the surface area of the noble metal), uniform dispersion of the noble metal particles on the support surface, and the like can be mentioned.
- recent automobile engines tend to perform lean burn control in which the fuel is burned in the lean region where the air-fuel ratio (AZF) is large.
- Nitrogen contained in the exhaust gas during lean burn There is a need for an exhaust gas purification device with excellent oxide purification performance.
- the exhaust gas purification device is required to improve the exhaust gas purification performance at a stage where the exhaust gas purification device has not sufficiently increased, for example, at the start of an automobile engine. This is because the level of catalyst is low when the level of exhaust gas purification device is not sufficiently increased.
- the exhaust gas emitted when starting the engine or the like contains substances subject to purification, such as carbon monoxide, hydrocarbons, and nitrogen oxides, more than normal (when the catalyst is active). Many will be included.
- Patent Document 1 Japanese Patent Laid-Open No. 2 0 0 3-3 2 6 1 3 7
- Patent Document 2 Japanese Patent Laid-Open No. 2 0 4-97 78
- Patent Techniques described in Reference 3 Japanese Patent Laid-Open No. 7-8 0 3 1 5
- Yoon No. 4 Japanese Table 2 0 0 1-5 2 6 5 8 6) are known.
- Patents The technology described in «1 to Special Offers 4 uses a zeolite that has the property of adsorbing substances to be purified such as carbon monoxide, hydrocarbons, nitrogen oxides (hereinafter referred to as“ adsorption capacity ”).
- the temperature of the exhaust gas purification device can be sufficiently increased by forming a carrier that supports the corners of the exhaust gas purification device or by forming a coating layer containing zeolite on the surface of the carrier that supports the exhaust gas purification device.
- the substance to be purified is temporarily adsorbed on zeolite or the like, and the substance to be purified is decomposed by keratin when the exhaust gas purification device is sufficiently raised.
- zeolite is coated on the carrier at a position upstream of the exhaust gas purification device (side closer to the engine) in the engine exhaust path (adsorbent).
- the purification target material is temporarily adsorbed on zeolite or the like to prevent the purification target material from being released outside without being exhausted by the exhaust gas purification device. is there.
- the techniques described in Patent Document 1 to Patent 4 and the technique using the adhesive material have the following problems.
- zeolite is an aluminosilicate in which fine pores are formed in a crystal, and a substance in which a part of an aluminum atom or silicon atom in the aluminosilicate is substituted with another metal atom.
- zeolites with different properties due to the crystal structure, the size of fine pores formed in the crystal, the type of substituted metal atoms, etc., and each of the substances to be purified contained in the exhaust gas.
- the adsorption capacity of these components carbon monoxide, hydrocarbons, nitrogen oxides, etc.
- it is required to use zeolite suitable for each component (carbon monoxide, hydrocarbon, nitrogen oxide, etc.) as the adsorbent.
- the hydrocarbon of the purification target substance contained in the exhaust gas the adsorbent limited come of P d / C E_ ⁇ 2 system Zeoraito system and P d / C o 3 0 4 system also adsorbents etc. There is a tendency to poison the adsorbents for adsorbing carbon monoxide and nitrogen oxides (decrease P and adhesion ability).
- an adsorbent for adsorbing hydrocarbons is separated from an adsorbent for adsorbing carbon monoxide and nitrogen oxides, and adsorbed to adsorb hydrocarbons upstream of the exhaust path.
- An adsorbent for adsorbing carbon monoxide and nitrogen oxide was arranged downstream of the material.
- these adsorbents when combined, they occupy a large volume as a whole, and there is a problem that miniaturization is not easy.
- the present invention provides an adsorbent for exhaust gas that can efficiently and efficiently deposit each component of a substance to be purified at the same time. Disclosure of the invention
- the present invention also provides
- the mixing ratio of the additive is 1 wt% or more and 20 wt% or less.
- ZSM 5 having a Si / A 1 2 0 3 molar ratio of 28 is obtained by Fe ion exchange.
- Z SM5, Y-type zeolite, mordenite, and type zeolite are all types of zeolite.
- Zeolite broadly refers to aluminosilicates with fine pores formed in crystals, and those obtained by substituting some of the aluminum atoms or silicon atoms in the aluminosilicates with other metal atoms. .
- Fe-ZSM5 refers broadly to those obtained by using ZSM5 as a starting material and performing Fe ion exchange.
- the additive may contain one type of Y-type zeolite, mordenite, and type zeolite, or may contain multiple types.
- the adsorbing capacity of the additive is preferably 1 wt% or more.
- the mixing ratio of the additive exceeds 2 O wt%, the ratio of the base material decreases and the adsorption capacity of the nitrogen oxides decreases, so it is strongly recommended that the mixing ratio of the additive be 2 O wt% or less. Yes.
- FIG. 1 is a graph showing the results of an adsorption experiment using an example of an adsorbent for exhaust gas according to the present invention.
- Examples 1 to 4 and the ratio tree are prepared by the following procedure.
- the molar ratio of S i / A ⁇ 2 0 3 molar ratio of 250 of the Y-type Zeoraito, S iZ A 1 2 0 3 molar ratio of 200 Morudenaito, S i / A 1 2 0 3 Prepare 400 type zeolite.
- the zeolite powder corresponding to Example 1 is prepared by mixing the Fe-ZSM5 and the Y-type zeolite.
- the zeolite powder corresponding to Example 2 is prepared by mixing the Fe-ZSM5 and the Y-type zeolite.
- the weight of the zeolite powder corresponding to Example 2 is 200 g, and the mixing ratio of the additive in the zeolite powder corresponding to Example 2 is 5 wt%.
- the zeolite powder corresponding to Example 3 is prepared by mixing the Fe-ZSM5 and the mordenite.
- the weight of the zeolite powder corresponding to Example 3 is 200 g, and the mixing ratio of the additive in the zeolite powder corresponding to Example 3 is 5 wt%.
- the zeolite powder corresponding to Example 4 is prepared by mixing the Fe-Z SM5 and the; type 3 zeolite.
- the weight of the zeolite powder corresponding to Example 4 is 200 g, and the mixing ratio of the additive in the zeolite powder corresponding to Example 4 is 5 g. wt%.
- the zeolite powder corresponding to the comparison ⁇ ! Consists only of the above F e— Z S M 5. Compare ⁇ !
- the weight of zeolite powder corresponding to is 200 g.
- zeolite powder a total of five types of zeolite powder obtained are mixed with silica sol and pure water, respectively, to produce slurry-like coating materials corresponding to Examples 1 to 4 and Comparative Example.
- Example 1 to Example 4 and a comparative example are produced by carrying out for 2 hours at ° C.
- an experimental method of the adsorption experiment using Examples 1 to 4 and the comparative example will be described.
- Example 1 is arranged in the middle of the exhaust path of the engine and upstream of the catalytic converter (side closer to the engine).
- the engine is started and held for 20 seconds, during which time the soot of hydrocarbons and nitrogen oxides contained in the exhaust gas discharged through Example 1 is detected.
- the adsorption rate (%) of the hydrocarbons and nitrogen oxides of Example 1 is calculated.
- the adsorption rate () of hydrocarbons (nitrogen oxides) is: (A) the exhaust gas adsorbent is not placed in the middle of the exhaust path, and the exhaust gas is exhausted between 20 seconds after starting the engine. Calculated based on the concentration of hydrocarbons (nitrogen oxides) excluding methane in The weight of the hydrocarbons (nitrogen oxides) to be discharged, and (B) with Example 1 placed in the middle of the exhaust path, the engine is discharged until 20 seconds after starting. Using the weight of hydrocarbon (nitrogen oxide) calculated based on the hydrocarbon (nitrogen oxide) excluding methane contained in the exhaust gas, the formula ⁇ (A- B) / A] X 1 0 Calculated by 0.
- the adsorption rates of nitrogen oxides of Examples 1 to 4 and Comparative Example are all 100%, and Examples 1 to 4 and Comparative ⁇ ! Exhibits excellent adsorptivity with respect to nitrogen oxides. Since the adsorption rate of nitrogen oxide in the comparative example is 100%, it is clear that the base material, Fe-ZSM5, contributes to the excellent adsorption property for nitrogen oxides. Further, since the adsorption rate of nitrogen oxide in Examples 1 to 4 is 100%, the adsorption rate of nitrogen oxide is reduced by mixing the additive and the base material according to this example. It has been shown not to do.
- the hydrocarbon adsorption rate of the comparative example is 96.8%, whereas the hydrocarbon adsorption rates of Examples 1 to 4 are 98.7%, 99.2%, 99%, respectively. 0% and 99.0%, and Examples 1 to 4 show better adsorbability with respect to hydrocarbons than the comparative examples.
- Example 1 to Example 4 Since the difference between Example 1 to Example 4 and the comparison is the presence or absence of the additive, the additive (at least one of Y-type zeolite, mordenite, and / 3-type zeolite) according to this example is used. Mixing with soot material (F e— Z SM 5) It is clear that it improves.
- the exhaust gas in the comparative example contained methane, ether and isooctane
- Examples 1 to The exhaust gas in Example 4 contained methane and ethane but did not contain isooctane. Therefore, it is clear that Examples 1 to 4 show an adsorption rate of 100% for hydrocarbons having a larger liver volume than ethane.
- Example 1 to Example 4 are identical to Example 1 to Example 4.
- the mixing ratio of the additive is 1 w t% or more and 2 O w t% or less.
- ZSM 5 having a Si / A 1 2 0 3 molar ratio of 28 is obtained by Fe ion exchange.
- Fe contained in Fe-ZSM5 increases and the adsorption ability of hydrocarbon and nitrogen oxide improves more.
- the present invention is not limited to exhaust gas discharged from engines such as automobiles, but is widely used for the purpose of adsorbing hydrocarbons (HC) and nitrogen oxides (NOx) contained in gas and separating them from the gas. Noh.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/304,124 US20090197761A1 (en) | 2006-06-13 | 2007-05-30 | Adsorbent for exhaust gas |
EP07744754A EP2039423A4 (en) | 2006-06-13 | 2007-05-30 | ADSORPTION AGENT FOR EXHAUST GAS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006163787A JP2007330866A (ja) | 2006-06-13 | 2006-06-13 | 排ガス用吸着材 |
JP2006-163787 | 2006-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007145104A1 true WO2007145104A1 (ja) | 2007-12-21 |
Family
ID=38831621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/061409 WO2007145104A1 (ja) | 2006-06-13 | 2007-05-30 | 排ガス用吸着材 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090197761A1 (ja) |
EP (1) | EP2039423A4 (ja) |
JP (1) | JP2007330866A (ja) |
KR (1) | KR20090031896A (ja) |
CN (1) | CN101466467A (ja) |
WO (1) | WO2007145104A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102274671B (zh) * | 2010-06-11 | 2016-01-13 | 中国石油化工股份有限公司 | 脱除co制备草酸酯排放尾气中氮氧化物的方法 |
CN102872799B (zh) * | 2012-10-24 | 2015-01-14 | 涿鹿恩泽催化材料有限公司 | 一种吸附和分解室内有害气体的吸附剂的制备方法 |
GB201716715D0 (en) * | 2017-10-12 | 2017-11-29 | Krajete GmbH | Method for reducing the nitrogen oxide(s) and/or CO content in a combustion and/or exhaust gas |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0275327A (ja) * | 1988-09-09 | 1990-03-15 | Toyota Motor Corp | 自動車排気ガス浄化装置 |
JPH06198192A (ja) * | 1992-12-28 | 1994-07-19 | Tosoh Corp | 排ガス浄化触媒 |
JPH0780315A (ja) | 1993-09-14 | 1995-03-28 | Mitsubishi Heavy Ind Ltd | 脱硝触媒及び排気ガスの処理方法 |
JPH0999207A (ja) * | 1995-10-04 | 1997-04-15 | Ngk Insulators Ltd | 耐水熱性分子篩及びそれを用いた炭化水素吸着材 |
JP2001526586A (ja) | 1997-05-07 | 2001-12-18 | エンゲルハード・コーポレーシヨン | フォーウエイディーゼル排気ガス触媒および使用方法 |
JP2002001124A (ja) * | 2000-06-20 | 2002-01-08 | Ict:Kk | 排気ガス浄化用触媒および排気ガス浄化方法 |
JP2003305338A (ja) * | 2002-04-15 | 2003-10-28 | Babcock Hitachi Kk | 排ガス浄化用触媒および浄化方法 |
JP2003326137A (ja) | 1997-04-23 | 2003-11-18 | Toyota Motor Corp | 排ガス浄化方法及び排ガス浄化用触媒 |
JP2004000978A (ja) | 1997-04-23 | 2004-01-08 | Toyota Motor Corp | 排ガス浄化方法及び排ガス浄化用触媒 |
JP2004190549A (ja) * | 2002-12-10 | 2004-07-08 | Mitsubishi Automob Eng Co Ltd | 内燃機関の排気浄化装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3702886A (en) * | 1969-10-10 | 1972-11-14 | Mobil Oil Corp | Crystalline zeolite zsm-5 and method of preparing the same |
JPH04367740A (ja) * | 1991-06-13 | 1992-12-21 | Tosoh Corp | 窒素酸化物還元除去用触媒及び還元除去方法 |
US5676912A (en) * | 1995-02-22 | 1997-10-14 | Mobil Oil Corporation | Process for exhaust gas NOx, CO, and hydrocarbon removal |
JP3417309B2 (ja) * | 1997-10-28 | 2003-06-16 | トヨタ自動車株式会社 | 炭化水素吸着材 |
-
2006
- 2006-06-13 JP JP2006163787A patent/JP2007330866A/ja active Pending
-
2007
- 2007-05-30 EP EP07744754A patent/EP2039423A4/en not_active Withdrawn
- 2007-05-30 CN CNA2007800219905A patent/CN101466467A/zh active Pending
- 2007-05-30 WO PCT/JP2007/061409 patent/WO2007145104A1/ja active Application Filing
- 2007-05-30 US US12/304,124 patent/US20090197761A1/en not_active Abandoned
- 2007-05-30 KR KR1020097000546A patent/KR20090031896A/ko not_active Application Discontinuation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0275327A (ja) * | 1988-09-09 | 1990-03-15 | Toyota Motor Corp | 自動車排気ガス浄化装置 |
JPH06198192A (ja) * | 1992-12-28 | 1994-07-19 | Tosoh Corp | 排ガス浄化触媒 |
JPH0780315A (ja) | 1993-09-14 | 1995-03-28 | Mitsubishi Heavy Ind Ltd | 脱硝触媒及び排気ガスの処理方法 |
JPH0999207A (ja) * | 1995-10-04 | 1997-04-15 | Ngk Insulators Ltd | 耐水熱性分子篩及びそれを用いた炭化水素吸着材 |
JP2003326137A (ja) | 1997-04-23 | 2003-11-18 | Toyota Motor Corp | 排ガス浄化方法及び排ガス浄化用触媒 |
JP2004000978A (ja) | 1997-04-23 | 2004-01-08 | Toyota Motor Corp | 排ガス浄化方法及び排ガス浄化用触媒 |
JP2001526586A (ja) | 1997-05-07 | 2001-12-18 | エンゲルハード・コーポレーシヨン | フォーウエイディーゼル排気ガス触媒および使用方法 |
JP2002001124A (ja) * | 2000-06-20 | 2002-01-08 | Ict:Kk | 排気ガス浄化用触媒および排気ガス浄化方法 |
JP2003305338A (ja) * | 2002-04-15 | 2003-10-28 | Babcock Hitachi Kk | 排ガス浄化用触媒および浄化方法 |
JP2004190549A (ja) * | 2002-12-10 | 2004-07-08 | Mitsubishi Automob Eng Co Ltd | 内燃機関の排気浄化装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2039423A4 |
Also Published As
Publication number | Publication date |
---|---|
US20090197761A1 (en) | 2009-08-06 |
CN101466467A (zh) | 2009-06-24 |
KR20090031896A (ko) | 2009-03-30 |
EP2039423A1 (en) | 2009-03-25 |
EP2039423A4 (en) | 2010-08-25 |
JP2007330866A (ja) | 2007-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9114362B2 (en) | Treatment of cold start engine exhaust | |
KR102211490B1 (ko) | 선택적 촉매 환원 촉매 시스템 | |
JP5141063B2 (ja) | 排ガス浄化装置 | |
EP0914864B1 (en) | Hydrocarbon-Adsorbent | |
JPH11179158A (ja) | 小細孔多孔体を含む自動車排ガス浄化用の吸着材及び吸着体、これを用いた排ガス浄化システム及び排ガス浄化方法 | |
JP3854134B2 (ja) | 内燃機関用排気ガス浄化装置 | |
WO2007145104A1 (ja) | 排ガス用吸着材 | |
JP3282344B2 (ja) | 排気ガス浄化装置 | |
JP2009167973A (ja) | 排気ガス浄化触媒装置及び排気ガス浄化方法 | |
JP2855911B2 (ja) | コールドhc吸着除去装置 | |
JP4145019B2 (ja) | 排気ガス浄化装置 | |
JPH11226425A (ja) | 排気ガス浄化用触媒 | |
JPH04293519A (ja) | 排気ガス浄化用装置 | |
JP5679124B2 (ja) | アルコール混合燃料を使用する内燃機関の排気ガス浄化方法、及び当該方法を使用する排気ガス浄化装置 | |
JP3695394B2 (ja) | 排気ガス浄化装置および製造方法 | |
WO2019132612A1 (ko) | 탄화수소 제거 시스템 | |
JP2005186002A (ja) | ディーゼルエンジン用排ガス浄化装置 | |
JP3414808B2 (ja) | 排気ガス中の炭化水素吸着剤 | |
JP2009162145A (ja) | 排気ガス浄化用触媒装置 | |
JP2004105821A (ja) | 排気ガス用炭化水素吸着材及びそれを用いた排気ガス浄化用触媒 | |
JP3728972B2 (ja) | 排気ガス浄化装置 | |
JP3567507B2 (ja) | 内燃機関の排気ガス浄化用触媒 | |
JPH07328448A (ja) | 排気ガス浄化触媒および排気ガス浄化装置 | |
JP2007237023A (ja) | 芳香族炭化水素吸着材、及び芳香族炭化水素低減システム | |
KR20220067569A (ko) | 탄화수소 흡착 촉매 및 이를 포함하는 탄화수소 트랩 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780021990.5 Country of ref document: CN |
|
DPE2 | Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07744754 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12304124 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007744754 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020097000546 Country of ref document: KR Ref document number: 1020097000544 Country of ref document: KR |