IT979899B - Procedimento per la rimozione degli ossidi di azoto da gas di scarico di motori a combustione interna - Google Patents
Procedimento per la rimozione degli ossidi di azoto da gas di scarico di motori a combustione internaInfo
- Publication number
- IT979899B IT979899B IT48878/73A IT4887873A IT979899B IT 979899 B IT979899 B IT 979899B IT 48878/73 A IT48878/73 A IT 48878/73A IT 4887873 A IT4887873 A IT 4887873A IT 979899 B IT979899 B IT 979899B
- Authority
- IT
- Italy
- Prior art keywords
- removal
- procedure
- internal combustion
- exhaust gases
- combustion engines
- Prior art date
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title 2
- 238000002485 combustion reaction Methods 0.000 title 1
- 239000007789 gas Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 1
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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/462—Ruthenium
-
- 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
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- 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
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/92—Dimensions
- B01D2255/9207—Specific surface
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/613—10-100 m2/g
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/635—0.5-1.0 ml/g
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23619072A | 1972-03-20 | 1972-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT979899B true IT979899B (it) | 1974-09-30 |
Family
ID=22888504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT48878/73A IT979899B (it) | 1972-03-20 | 1973-03-16 | Procedimento per la rimozione degli ossidi di azoto da gas di scarico di motori a combustione interna |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS495861A (it) |
DE (1) | DE2313676A1 (it) |
FR (1) | FR2177331A5 (it) |
IT (1) | IT979899B (it) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2597252B2 (ja) * | 1991-08-02 | 1997-04-02 | 公害健康被害補償予防協会 | 低濃度窒素酸化物の吸着除去剤 |
EP1048347A4 (en) * | 1996-11-28 | 2001-09-12 | Idemitsu Kosan Co | RUTHENIUM CATALYST WITH ALUMINA SUPPORT |
AU742830B2 (en) * | 1997-11-27 | 2002-01-10 | Idemitsu Kosan Co. Ltd | Alumina-supported ruthenium catalyst |
CN1104950C (zh) * | 1997-11-27 | 2003-04-09 | 出光兴产株式会社 | 以氧化铝为载体的钌催化剂 |
-
1973
- 1973-03-16 IT IT48878/73A patent/IT979899B/it active
- 1973-03-19 FR FR7309667A patent/FR2177331A5/fr not_active Expired
- 1973-03-20 JP JP48031534A patent/JPS495861A/ja active Pending
- 1973-03-20 DE DE2313676A patent/DE2313676A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2313676A1 (de) | 1973-10-04 |
FR2177331A5 (en) | 1973-11-02 |
JPS495861A (it) | 1974-01-19 |
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