KR960028968A - 배기 가스 정화용 촉매 - Google Patents

배기 가스 정화용 촉매 Download PDF

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Publication number
KR960028968A
KR960028968A KR1019960000799A KR19960000799A KR960028968A KR 960028968 A KR960028968 A KR 960028968A KR 1019960000799 A KR1019960000799 A KR 1019960000799A KR 19960000799 A KR19960000799 A KR 19960000799A KR 960028968 A KR960028968 A KR 960028968A
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South Korea
Prior art keywords
catalyst
catalyst according
potassium titanate
exhaust gas
noble metal
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KR1019960000799A
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English (en)
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KR0158666B1 (ko
Inventor
고오지 반노
마사히로 스기우라
요꼬 구마이
하루오 도이
데쓰오 나가미
노리히꼬 아오노
고이찌 가사하라
시게지 마쓰모또
Original Assignee
수가누마 아끼라
도요다 지도샤 가부시키가이샤
이와부찌 아끼오
카탈러 고교 가부시끼가이샤
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Priority claimed from JP7330660A external-priority patent/JPH08252459A/ja
Priority claimed from JP7342726A external-priority patent/JPH09173841A/ja
Application filed by 수가누마 아끼라, 도요다 지도샤 가부시키가이샤, 이와부찌 아끼오, 카탈러 고교 가부시끼가이샤 filed Critical 수가누마 아끼라
Publication of KR960028968A publication Critical patent/KR960028968A/ko
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Publication of KR0158666B1 publication Critical patent/KR0158666B1/ko

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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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/864—Removing carbon monoxide or 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0242—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid flow within the bed being predominantly vertical
    • B01J8/025—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid flow within the bed being predominantly vertical in a cylindrical shaped bed
    • 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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/2425—Tubular reactors in parallel
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/008—Details of the reactor or of the particulate material; Processes to increase or to retard the rate of reaction
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0278—Feeding reactive fluids
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0285—Heating or cooling the reactor
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
    • B01J8/0446—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical
    • B01J8/0449—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical beds
    • B01J8/0453—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical beds the beds being superimposed one above the other
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
    • C01B3/384—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts the catalyst being continuously externally heated
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00203—Coils
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00157—Controlling the temperature by means of a burner
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

본 발명은 칼륨 티타네이트로 된 촉매 담체와 동 촉매 담체에 부가된 귀금속을 포함하여 구성된 배기 가스 정화용 촉매에 관한 것이다. 상기 촉매 담체는 실질적으로 알루미나를 포함하지 않는다. 본 발명에 의한 촉매는 저온에서 높은 활성으로 배기 가스중 탄화수소 등을 산화시키며, 동시에 SO2가 설페이트로 전환하는 것을 억제시킨다. 본 발명에 의한 촉매는 촉매 담체로서 고형의 산도를 가지는 알루미나 같은 물질을 사용하지 않는다. 나아가, 본 발명에 의한 촉매는 디젤 엔진의 배기 가스를 정화하여 입자와 설페이트가 방출되는 것을 억제하시키고 탄화수소 및 일산화탄소를 효율적으로 전환시키는 데에 사용할 수 있다.

Description

배기 가스 정화용 촉매
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (8)

  1. 화학식 K2O·nTiO2(n은 4 내지 8의 정수)으로 표시되는 칼륨 티타네이트를 포함하며, 알루미나를 실질적으로 포함하지 않는 촉매 담체와; 동 촉매 담체에 부가된 귀금속을 포함하여 구성된 배기 가스 정화용 촉매.
  2. 제1항에 있어서, 상기 귀금속이 백금, 팔라듐 및 로듐으로 구성된 그룹에서 선택된 하나 이상의 성분임을 특징으로 하는 촉매.
  3. 제1항에 있어서 상기 귀금속의 부가량이 상기 칼륨 티타네이트 100g을 기준으로 0.2 내지 10g의 범위인 것을 특징으로 하는 촉매.
  4. 제1항에 있어서, 실리카(SiO2)졸, 티타니아(TiO2)졸 및 지르코니아(ZrO2)졸로 구성된 그룹에서 선택된 하나 이상의 결합제를 더욱 포함하고 있는 것을 특징으로 하는 촉매.
  5. 촉매 지지체와; 화학식 K2O·nTiO2(n은 4 내지 8의 정수)으로 표시되는 칼륨 티타네이트와, 실리카, 티타니아 및 지르코니아로 구성된 그룹에서 선택된 하나 이상의 성분, 그리고 이에 부가되어 있는 귀급속을 포함하며, 알루미나를 실질적으로 포함하지 않는 내열성 무기 산화물층을 포함하여 구성되는 배기 가스 정화용 촉매.
  6. 제5항에 있어서, 상기 귀금속이 백금, 팔라듐 및 로듐으로 구성된 그룹에서 선택된 하나 이상의 성분임을 특징으로 하는 촉매.
  7. 제5항에 있어서, 상기 칼륨 티타네이트의 양이 상기 촉매 1ℓ당 20 내지 60g인 범위인 것을 특징으로 하는 촉매.
  8. 제5항에 있어서, 상기 내열성 무기 산화물층이 상기 칼륨 티타네이트와 실리카를 포함하여 구성되는 것을 특징으로 하는 촉매.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960000799A 1995-01-17 1996-01-17 배기가스 정화용 촉매 KR0158666B1 (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP95-005112 1995-01-17
JP511295 1995-01-17
JP7330660A JPH08252459A (ja) 1995-01-17 1995-12-19 酸化触媒
JP95-330660 1995-12-19
JP7342726A JPH09173841A (ja) 1995-12-28 1995-12-28 ディーゼルエンジン排ガス浄化用触媒
JP95-342726 1995-12-28

Publications (2)

Publication Number Publication Date
KR960028968A true KR960028968A (ko) 1996-08-17
KR0158666B1 KR0158666B1 (ko) 1998-11-16

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KR1019960000799A KR0158666B1 (ko) 1995-01-17 1996-01-17 배기가스 정화용 촉매

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US (1) US5686377A (ko)
EP (1) EP0722767A1 (ko)
KR (1) KR0158666B1 (ko)

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Publication number Publication date
EP0722767A1 (en) 1996-07-24
US5686377A (en) 1997-11-11
KR0158666B1 (ko) 1998-11-16

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