KR900012674A - 암모니아에 의한 산화질소의 선택적 환원을 위한 촉매 - Google Patents

암모니아에 의한 산화질소의 선택적 환원을 위한 촉매 Download PDF

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KR900012674A
KR900012674A KR1019900002491A KR900002491A KR900012674A KR 900012674 A KR900012674 A KR 900012674A KR 1019900002491 A KR1019900002491 A KR 1019900002491A KR 900002491 A KR900002491 A KR 900002491A KR 900012674 A KR900012674 A KR 900012674A
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components
catalyst
component
obtainable
salts
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브란트 라인홀트
엥글러 베른트
혼넨 볼프강
코버슈타인 에드가
옴머 요하네스
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볼프강 메르크·로렌츠 크레우츠비클러
데구사 아크티엔게젤샤프트
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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
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/066—Zirconium or hafnium; Oxides or hydroxides thereof
    • 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
    • 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
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • 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
    • B01J35/60—
    • B01J35/61—
    • 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
    • B01J37/08—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
    • 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
    • B01D2255/20707—Titanium
    • 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
    • B01D2255/20723—Vanadium
    • 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
    • B01D2255/20776—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/92—Dimensions
    • B01D2255/9207—Specific surface
    • B01J35/613—
    • B01J35/615—

Abstract

내용 없음

Description

암모니아에 의한 산화질소의 선택적 환원을 위한 촉매
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 SiO2가 촉매 중에서 안정화재로서 사용될 경우 300℃이상 온도에서 작동되는 건조 석탄-연소장치의 연료가스 중에서 장시간 사용되는 동안 저하되는 활성 감소를 도시한 것이다(실시예 13참조).
제2 및 3도는 비교실시예 1에 따라 통상적으로 제조된 촉매와 비교하여, 본 발명이 촉매의 활성이 놀라울 정도로 높음을 나타낸 그래프이다.

Claims (7)

  1. 아나타제 변형 반응에서 독점적으로 또는 우세하게 존재하는, BET 표면이 40 내지 500, 바람직하게는 50 내지 300 및 더욱 바람직하게는 75 내지 150m2/g인 반응성 고-표면 산화티탄형의 하기 성분 A)를, 하기 성분 B4) 및 B2), 바람직하게는 이의 전구체와 함께, 세라믹 페이스트, 습윤제, 지지물질, 결합제, 성형 보조제 및 임이의 합기제의 압축 성형 또는 압축 공정에서 통상적으로사용되는 첨가제를 첨가하면서, 격렬하게 혼합하여 (kneading) 균일하게 혼합된 페이스트를 형성시키고 : 혼합된 페이스트를 성형물로 압출시킨 후 : 온도를 최대 60℃까지 점진적으로 증가시키면서 성형물을 건조시키고 : 최종온도가 300 내지 800℃ 범위로 될 때까지 주위 대기하에서 온도를 단계적으로 증가시켜 성형물을 하소시킴으로써 수득할 수 있는 성분 : A) 이산화티탄, B4) 텅스텐, 실리콘, 붕소, 알루미늄, 인, 지르코늄, 바륨, 이트륨, 란탄, 세륨의 산화물 중 하나 이상 및 B2) 바나듐, 니오븀, 몰리브덴, 철, 구리의 산화물 중 하나 이상(여기서, 성분 A) 및 B) 원소의 원자비는 1 : 0.001 내지 1 및 바람직하게는 1 : 0.02 내지 0.4 이다)을 함유함을 특징으로 하는 산화질소와 암모니아의 선택적으로 환원반응을 위한 촉매.
  2. 제1항에 있어서, 성분 B1) 및 B2)의 출발물질로서, 수산화물, 산화물, 염 또는 이종다중산 또는 이의 염, 바람직하게는 암모늄염을 사용함으로써 수득할 수 있는 촉매.
  3. 제1항 또는 2항에 있어서, 성분 B2)를 가하기 전에 혼합기에서 성분 A) 및 성분 B4)을 혼합하고 수득한 혼합물을 pH 7 내지 11, 바람직하게는 pH 8 내지 10에서 건조 예비 혼합시켜 잔여습기 함량이 3 내지 12중량% 바람직하게는 5 내지 10중량%가 되도록 하여 수득할 수 있는 촉매.
  4. 제3항에 있어서, 성분 B2)를 가하기 전에 400 내지 700℃ 온도에서 성분 A) 및 B4)의 건조-예비 혼합된 혼합물을 예비하소시킴으로써 수득할 수 있는 촉매.
  5. 제1항 내지 3항중 어느 한 항에 있어서, 성분 A), B4) 및 B2)로 이루어진 페이스트를 균일하게 혼합된 페이스트로 혼합하기 전에 300 내지 800℃ 및 바람직하게는 400 내지 700℃에서 예비하소시킴으로써 수득할 수 있는 촉매.
  6. 제1항 내지 5항중 어느 한 항에 있어서, 성분 B1) 및 B2)가 이종다중산 또는 이의 특정 염, 바람직하게는 암모늄염 형으로 사용되고, 그룹 B1) 및 B2)의 금속이 원자비 12 : 1 내지 1 : 12로 존재하는 이종다중산 중에서 존재함을 특징으로 하는 촉매.
  7. 제1항 또는 2항에 있어서, 성분 B2)의 출발물질을 혼합공정으로부터 분리시키고, 분리 생성물을 수용액 중에서 염 또는 이종 다중산 또는 이의 특정염, 바람직하게는 암모늄염형으로 포화시켜 성분 A 및 B4)으로 이루어진 바람직하게 하소된 촉매 전구체에 도입시켜 수득할 수 있는 촉매.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900002491A 1989-02-28 1990-02-27 암모니아에 의한 산화질소의 선택적 환원을 위한 촉매 KR900012674A (ko)

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DEP3906136.1 1989-02-28
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EP (1) EP0385164B1 (ko)
JP (1) JPH02290250A (ko)
KR (1) KR900012674A (ko)
AT (1) ATE95443T1 (ko)
AU (1) AU615375B2 (ko)
BR (1) BR9000900A (ko)
CA (1) CA2010970A1 (ko)
DD (1) DD296854A5 (ko)
DE (2) DE3906136C1 (ko)
DK (1) DK0385164T3 (ko)
ES (1) ES2046549T3 (ko)
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KR20190104707A (ko) * 2018-03-02 2019-09-11 한국과학기술연구원 질소산화물 환원용 촉매 및 이를 이용한 질소산화물 환원 시스템
KR20210119756A (ko) 2020-03-25 2021-10-06 한국과학기술연구원 황산이온으로 기능화된 금속 산화물을 포함하는 전기적 펜톤 반응 시스템용 촉매, 이를 포함하는 전극 및 이를 이용한 전기적 펜톤 반응 시스템
KR20210119757A (ko) 2020-03-25 2021-10-06 한국과학기술연구원 질산 이온으로 기능화된 전이금속 산화물들로 이루어진 난분해성 오염물 분해용 촉매, 이를 포함하는 난분해성 오염물 분해 시스템
US11897793B2 (en) 2020-03-25 2024-02-13 Korea Institute Of Science And Technology Catalysts for Fenton system containing metal oxide containing functional group on surface and Fenton system using the same

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EP0385164B1 (de) 1993-10-06
ATE95443T1 (de) 1993-10-15
BR9000900A (pt) 1991-02-13
DE3906136C1 (ko) 1990-08-09
EP0385164A3 (en) 1990-11-28
JPH02290250A (ja) 1990-11-30
DD296854A5 (de) 1991-12-19
DE59002961D1 (de) 1993-11-11
AU5002690A (en) 1990-09-06
ES2046549T3 (es) 1994-02-01
DK0385164T3 (da) 1994-02-28
AU615375B2 (en) 1991-09-26
CA2010970A1 (en) 1990-08-31
RU2058814C1 (ru) 1996-04-27
EP0385164A2 (de) 1990-09-05

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