CA1038599A - Catalytic removal of nitrogen oxides from exhaust gases - Google Patents

Catalytic removal of nitrogen oxides from exhaust gases

Info

Publication number
CA1038599A
CA1038599A CA179,743A CA179743A CA1038599A CA 1038599 A CA1038599 A CA 1038599A CA 179743 A CA179743 A CA 179743A CA 1038599 A CA1038599 A CA 1038599A
Authority
CA
Canada
Prior art keywords
catalyst
weight
percent
palladium
rhodium
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
CA179,743A
Other languages
English (en)
French (fr)
Other versions
CA179743S (en
Inventor
James M. Maselli
Gwan Kim
Warren S. Briggs
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.)
WR Grace and Co
Original Assignee
WR Grace and Co
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
Application filed by WR Grace and Co filed Critical WR Grace and Co
Application granted granted Critical
Publication of CA1038599A publication Critical patent/CA1038599A/en
Expired legal-status Critical Current

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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/892—Nickel and noble metals
    • 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
    • B01D2255/1021—Platinum
    • 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
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1025—Rhodium
    • 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
    • B01D2255/1026—Ruthenium
    • 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
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • 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
    • B01D2255/20753—Nickel
    • 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
    • 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
    • B01J35/51—Spheres

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
CA179,743A 1972-12-14 1973-08-28 Catalytic removal of nitrogen oxides from exhaust gases Expired CA1038599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31506172A 1972-12-14 1972-12-14

Publications (1)

Publication Number Publication Date
CA1038599A true CA1038599A (en) 1978-09-19

Family

ID=23222715

Family Applications (1)

Application Number Title Priority Date Filing Date
CA179,743A Expired CA1038599A (en) 1972-12-14 1973-08-28 Catalytic removal of nitrogen oxides from exhaust gases

Country Status (6)

Country Link
JP (1) JPS5635938B2 (enrdf_load_stackoverflow)
CA (1) CA1038599A (enrdf_load_stackoverflow)
DE (1) DE2360975A1 (enrdf_load_stackoverflow)
FR (1) FR2326973A1 (enrdf_load_stackoverflow)
GB (1) GB1415757A (enrdf_load_stackoverflow)
IT (1) IT1001405B (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466278A1 (fr) * 1979-10-04 1981-04-10 Pro Catalyse Catalyseur et procede de traitement des gaz d'echappement des moteurs a combustion interne
EP0244127A1 (en) * 1986-04-16 1987-11-04 Johnson Matthey, Inc., Method for catalytically controlling exhaust gaz from automobiles
US4895824A (en) * 1987-09-08 1990-01-23 W. R. Grace & Co.-Conn. Add-on hydrogen sulfide trap

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259453A (en) * 1962-07-19 1966-07-05 Du Pont Method and apparatus for treating exhaust gases of internal combustion engines
US3397154A (en) * 1963-07-09 1968-08-13 Du Pont Preparation of alumina-supported catalyst compositions and the products thereof
US3513109A (en) * 1967-04-19 1970-05-19 Du Pont Process for applying catalytic coatings
US3524721A (en) * 1967-12-22 1970-08-18 Ethyl Corp Catalyst composition
GB1390182A (en) * 1971-03-16 1975-04-09 Johnson Matthey Co Ltd Catalysis
JPS5338716B2 (enrdf_load_stackoverflow) * 1972-05-08 1978-10-17

Also Published As

Publication number Publication date
JPS5046586A (enrdf_load_stackoverflow) 1975-04-25
GB1415757A (en) 1975-11-26
FR2326973A1 (fr) 1977-05-06
DE2360975A1 (de) 1974-06-20
IT1001405B (it) 1976-04-20
JPS5635938B2 (enrdf_load_stackoverflow) 1981-08-20

Similar Documents

Publication Publication Date Title
US4303552A (en) Diesel exhaust catalyst
US5179059A (en) Catalyst for purifying the exhaust gases of internal combustion engines and method for making the catalyst
US3951860A (en) Catalyst
EP0130835B1 (en) High temperature stable catalyst, process for preparing same and process for conducting chemical reaction using same
US5061464A (en) Oxidation process and catalyst for use therefor
KR100584799B1 (ko) 전환 성능이 개선된 촉매 물질
CA1154740A (en) Method for forming high surface area catalyst carrier and catalyst using same
CA1115682A (en) Catalyst having protection against poisoning by extraneous materials
EP0361952B1 (en) Catalytic washcoat
US3615166A (en) Catalysts for purification of waste gases containing oxides of nitrogen
EP0457480B1 (en) Catalytic reduction
US4171289A (en) Selective automotive exhaust catalysts and a process for their preparation
US5108978A (en) Multifunctional catalysts containing cerium, uranium and at least one other metal, for converting pollutants emitted by internal combustion engines, and their preparation
US5024985A (en) Support material for three-way catalysts containing platinum group metal and having reduced tendency for H2 S emission
CN111111656B (zh) 一种常温催化引燃VOCs自持燃烧的耐高温催化燃烧催化剂及其制备方法和应用
US4323542A (en) Catalytic conversion of carbon monoxide, hydrocarbons and oxides of nitrogen
JPS594175B2 (ja) 被覆触媒を使用する窒素酸化物除去
JPS63205141A (ja) 排ガス浄化用触媒
US3867309A (en) Catalyst composition for removing noxious components from a gaseous stream
CA1038599A (en) Catalytic removal of nitrogen oxides from exhaust gases
JP2594804B2 (ja) 車輌排出ガスシステム
US4199555A (en) Catalyst for reducing nitrogen oxides
JPH0194945A (ja) 触媒燃焼反応用触媒体とその製造方法
WO1990005579A1 (en) Oxidation process and catalyst
US3998930A (en) Iridium-nickel exhaust gas conversion catalyst and process