IT1000081B - Procedimento e catalizzatore per la riduzione degli ossidi di azoto contenuti in gas d scarico di au tomobili - Google Patents

Procedimento e catalizzatore per la riduzione degli ossidi di azoto contenuti in gas d scarico di au tomobili

Info

Publication number
IT1000081B
IT1000081B IT52616/73A IT5261673A IT1000081B IT 1000081 B IT1000081 B IT 1000081B IT 52616/73 A IT52616/73 A IT 52616/73A IT 5261673 A IT5261673 A IT 5261673A IT 1000081 B IT1000081 B IT 1000081B
Authority
IT
Italy
Prior art keywords
tomobili
catalyst
procedure
reduction
exhaust gas
Prior art date
Application number
IT52616/73A
Other languages
English (en)
Inventor
J Santala
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Application granted granted Critical
Publication of IT1000081B publication Critical patent/IT1000081B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/002—Alloys based on nickel or cobalt with copper as the next major constituent
    • 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
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • B01D53/9463—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick
    • B01D53/9472—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick in different zones
    • 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
    • B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20—Vanadium, niobium or tantalum
    • B01J23/22—Vanadium
    • B01J35/56—
    • B01J35/58—
    • 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
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • B01J37/0225—Coating of metal substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2063—Lanthanum
    • 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
    • B01D2255/20753—Nickel
    • 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
    • B01D2255/20761—Copper
    • 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
    • B01D2255/20784—Chromium
    • 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
    • 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
IT52616/73A 1972-11-29 1973-09-19 Procedimento e catalizzatore per la riduzione degli ossidi di azoto contenuti in gas d scarico di au tomobili IT1000081B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00310623A US3849342A (en) 1972-11-29 1972-11-29 Catalysts for conversion of nitrogen oxide pollutants in automotive exhaust gases

Publications (1)

Publication Number Publication Date
IT1000081B true IT1000081B (it) 1976-03-30

Family

ID=23203375

Family Applications (1)

Application Number Title Priority Date Filing Date
IT52616/73A IT1000081B (it) 1972-11-29 1973-09-19 Procedimento e catalizzatore per la riduzione degli ossidi di azoto contenuti in gas d scarico di au tomobili

Country Status (5)

Country Link
US (1) US3849342A (it)
JP (1) JPS4983686A (it)
FR (1) FR2208447A5 (it)
GB (1) GB1449224A (it)
IT (1) IT1000081B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997651A (en) * 1973-02-26 1976-12-14 Bocciarelli Carlo V Catalyst material, method of preparation thereof, and method and apparatus using same
JPS5035089A (it) * 1973-08-01 1975-04-03
US3907714A (en) * 1973-11-16 1975-09-23 Int Harvester Co Catalyst for reducing nitrogen oxides
JPS6052856B2 (ja) * 1975-09-05 1985-11-21 株式会社神戸製鋼所 固定燃焼装置よりの排ガス中に含まれる窒素酸化物の除去法
US4233183A (en) * 1979-02-06 1980-11-11 Hitachi Shipbuilding & Engineering Co., Ltd. Process for producing plate-shaped denitrating catalyst
JPS629941Y2 (it) * 1981-03-12 1987-03-09
DE3332345C2 (de) * 1983-09-08 1986-08-07 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim Filtermaterial aus Metallgewebe
DE3528881A1 (de) * 1985-08-12 1987-02-12 Interatom Katalysatortraegerfolie
WO1988005487A1 (en) * 1987-01-21 1988-07-28 Sfs Stadler Ag Fastening element with large-area plain washer
NL9200281A (nl) * 1992-02-14 1993-09-01 Veg Gasinstituut Nv Werkwijze voor de reductie van stikstof-oxiden tot stikstof.

Also Published As

Publication number Publication date
DE2359018B2 (de) 1976-09-30
GB1449224A (en) 1976-09-15
JPS4983686A (it) 1974-08-12
FR2208447A5 (it) 1974-06-21
US3849342A (en) 1974-11-19
DE2359018A1 (de) 1974-06-12

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