IT978231B - Catalizzatore di riduzione delle aliquote di azoto nei gas di sca rico dei motori a scoppio - Google Patents
Catalizzatore di riduzione delle aliquote di azoto nei gas di sca rico dei motori a scoppioInfo
- Publication number
- IT978231B IT978231B IT1930473A IT1930473A IT978231B IT 978231 B IT978231 B IT 978231B IT 1930473 A IT1930473 A IT 1930473A IT 1930473 A IT1930473 A IT 1930473A IT 978231 B IT978231 B IT 978231B
- Authority
- IT
- Italy
- Prior art keywords
- catalyst
- reduction
- exhaust gases
- combustion engines
- nitrogen rates
- Prior art date
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
- B01D53/9431—Processes characterised by a specific device
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/043—Sulfides with iron group metals or platinum group metals
-
- 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
- B01J37/20—Sulfiding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
-
- 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
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2092—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7205522A FR2171998A1 (en) | 1972-02-18 | 1972-02-18 | Catalysts for the redn of nitrogen oxides - comprising nickel and/or cobalt sulphide supported on nickel and/or cobalt |
FR7231395A FR2197648B2 (it) | 1972-02-18 | 1972-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT978231B true IT978231B (it) | 1974-09-20 |
Family
ID=26216912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT1930473A IT978231B (it) | 1972-02-18 | 1973-01-17 | Catalizzatore di riduzione delle aliquote di azoto nei gas di sca rico dei motori a scoppio |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS4894695A (it) |
AR (1) | AR194301A1 (it) |
AU (1) | AU5190373A (it) |
BE (1) | BE794693A (it) |
DE (1) | DE2307342A1 (it) |
FR (2) | FR2171998A1 (it) |
IT (1) | IT978231B (it) |
NL (1) | NL7301298A (it) |
-
0
- BE BE794693D patent/BE794693A/xx unknown
-
1972
- 1972-02-18 FR FR7205522A patent/FR2171998A1/fr active Granted
- 1972-09-05 FR FR7231395A patent/FR2197648B2/fr not_active Expired
-
1973
- 1973-01-17 IT IT1930473A patent/IT978231B/it active
- 1973-01-30 NL NL7301298A patent/NL7301298A/xx unknown
- 1973-02-07 AU AU51903/73A patent/AU5190373A/en not_active Expired
- 1973-02-15 DE DE19732307342 patent/DE2307342A1/de active Pending
- 1973-02-16 AR AR24664873A patent/AR194301A1/es active
- 1973-02-19 JP JP48020103A patent/JPS4894695A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
AU5190373A (en) | 1974-08-08 |
FR2197648A2 (it) | 1974-03-29 |
DE2307342A1 (de) | 1973-08-30 |
JPS4894695A (it) | 1973-12-05 |
NL7301298A (it) | 1973-08-21 |
AR194301A1 (es) | 1973-06-29 |
FR2171998B1 (it) | 1974-09-13 |
FR2171998A1 (en) | 1973-09-28 |
FR2197648B2 (it) | 1975-06-13 |
BE794693A (fr) | 1973-05-16 |
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