CA1110829A - Conversion of nitrogen oxides - Google Patents

Conversion of nitrogen oxides

Info

Publication number
CA1110829A
CA1110829A CA319,385A CA319385A CA1110829A CA 1110829 A CA1110829 A CA 1110829A CA 319385 A CA319385 A CA 319385A CA 1110829 A CA1110829 A CA 1110829A
Authority
CA
Canada
Prior art keywords
zeolite
honeycomb
crystals
molecular sieve
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA319,385A
Other languages
English (en)
French (fr)
Inventor
Gerald M. Woltermann
Stanley M. Brown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Engelhard Minerals and Chemicals Corp
Original Assignee
Engelhard Minerals and Chemicals Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/891,503 external-priority patent/US4157375A/en
Application filed by Engelhard Minerals and Chemicals Corp filed Critical Engelhard Minerals and Chemicals Corp
Application granted granted Critical
Publication of CA1110829A publication Critical patent/CA1110829A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/061—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing metallic elements added to the zeolite
    • 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
    • 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
    • B01D2255/50—Zeolites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
CA319,385A 1978-03-30 1979-01-10 Conversion of nitrogen oxides Expired CA1110829A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/891,503 US4157375A (en) 1977-12-02 1978-03-30 Conversion of nitrogen oxides
US891,503 1992-05-29

Publications (1)

Publication Number Publication Date
CA1110829A true CA1110829A (en) 1981-10-20

Family

ID=25398303

Family Applications (1)

Application Number Title Priority Date Filing Date
CA319,385A Expired CA1110829A (en) 1978-03-30 1979-01-10 Conversion of nitrogen oxides

Country Status (4)

Country Link
JP (2) JPS54133489A (sv)
CA (1) CA1110829A (sv)
DE (1) DE2912269A1 (sv)
GB (1) GB2017520A (sv)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58202042A (ja) * 1982-05-20 1983-11-25 Toray Ind Inc ゼオライト含有蜂の巣状構造物
JPS59230642A (ja) * 1983-06-15 1984-12-25 Toyo Soda Mfg Co Ltd 選択的還元脱硝触媒及びそれを使用するガスの脱硝方法
DE3328653A1 (de) * 1983-08-09 1985-02-28 Steuler Industriewerke GmbH, 5410 Höhr-Grenzhausen Vorrichtung zur durchfuehrung eines verfahrens zur ausscheidung von stickoxyden aus abgasen
EP0205813A3 (de) * 1985-04-22 1988-09-21 Klaus Rennebeck Katalysator, insbesondere für die Abgasreinigung, Verfahren und Vorrichtung zu seiner Herstellung
DE3674313D1 (de) * 1985-08-08 1990-10-25 Mobil Oil Corp Reduktion von stickstoffoxiden in abgasen.
US4778665A (en) * 1986-09-09 1988-10-18 Mobil Oil Corporation Abatement of NOx in exhaust gases
DE3635284A1 (de) * 1986-10-16 1988-04-28 Steuler Industriewerke Gmbh Katalysator zur entfernung von stickoxiden aus abgasen
JPH0339655Y2 (sv) * 1987-03-16 1991-08-21
DE3738916A1 (de) * 1987-11-17 1989-05-24 Ibs Engineering & Consulting I Grossformatiger oder kleinformatiger molekularsieb-formkoerper und verfahren zu seiner herstellung
US5125231A (en) * 1990-06-08 1992-06-30 Corning Incorporated Dual converter engine exhaust system for reducing hydrocarbon emissions
US6089014A (en) * 1990-06-08 2000-07-18 Corning Incorporated Engine exhaust system with reduced hydrocarbon emissions
US5207734A (en) * 1991-07-22 1993-05-04 Corning Incorporated Engine exhaust system for reduction of hydrocarbon emissions
US5565394A (en) * 1994-10-11 1996-10-15 Corning Incorporated Low expansion molecular sieves and method of making same
JP2010001205A (ja) * 2008-05-20 2010-01-07 Ibiden Co Ltd ハニカム構造体
DE102014205760A1 (de) * 2014-03-27 2015-10-01 Johnson Matthey Public Limited Company Verfahren zum Herstellen eines Katalysator sowie Katalysator
CN111957294A (zh) * 2020-08-11 2020-11-20 江西宝安新材料科技有限公司 蜂窝型分子筛的免烧制作方法
CN114887649A (zh) * 2022-07-14 2022-08-12 中国汽车技术研究中心有限公司 一种免涂覆整体式废气净化催化剂及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119660A (en) * 1960-09-26 1964-01-28 Union Carbide Corp Process for producing molecular sieve bodies
US3391994A (en) * 1964-12-08 1968-07-09 Engelhard Min & Chem Method for producing faujasitetype zeolites
JPS548351B2 (sv) * 1973-09-27 1979-04-14
JPS5191868A (sv) * 1975-01-27 1976-08-12
JPS593218B2 (ja) * 1975-09-25 1984-01-23 トウアネンリヨウコウギヨウ カブシキガイシヤ ダツシヨウシヨクバイ

Also Published As

Publication number Publication date
DE2912269A1 (de) 1979-10-11
JPS6480431A (en) 1989-03-27
JPS54133489A (en) 1979-10-17
JPS6231984B2 (sv) 1987-07-11
DE2912269C2 (sv) 1990-02-08
GB2017520A (en) 1979-10-10
JPH0236288B2 (sv) 1990-08-16

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