IT1021324B - Catalizzatore di riduzione seletti va per depurare gas di scarico da ossidi di azoto e procedimento di riduzione - Google Patents
Catalizzatore di riduzione seletti va per depurare gas di scarico da ossidi di azoto e procedimento di riduzioneInfo
- Publication number
- IT1021324B IT1021324B IT27226/74A IT2722674A IT1021324B IT 1021324 B IT1021324 B IT 1021324B IT 27226/74 A IT27226/74 A IT 27226/74A IT 2722674 A IT2722674 A IT 2722674A IT 1021324 B IT1021324 B IT 1021324B
- Authority
- IT
- Italy
- Prior art keywords
- reduction
- seletti
- exhaust gas
- nitrogen oxides
- purify exhaust
- Prior art date
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
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/76—Iron group metals or copper
-
- 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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—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
- 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
- B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
- B01J29/26—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
-
- 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
- B01J29/50—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the erionite or offretite type, e.g. zeolite T, as exemplified by patent document US2950952
- B01J29/58—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the erionite or offretite type, e.g. zeolite T, as exemplified by patent document US2950952 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
-
- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/30—After treatment, characterised by the means used
- B01J2229/40—Special temperature treatment, i.e. other than just for template removal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10349573A JPS5315708B2 (de) | 1973-09-13 | 1973-09-13 | |
| JP10349673A JPS5315709B2 (de) | 1973-09-13 | 1973-09-13 | |
| JP11027773A JPS5315710B2 (de) | 1973-09-26 | 1973-09-26 | |
| JP11027873A JPS5315711B2 (de) | 1973-09-26 | 1973-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1021324B true IT1021324B (it) | 1978-01-30 |
Family
ID=27469133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT27226/74A IT1021324B (it) | 1973-09-13 | 1974-09-12 | Catalizzatore di riduzione seletti va per depurare gas di scarico da ossidi di azoto e procedimento di riduzione |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT344668B (de) |
| BR (1) | BR7407660D0 (de) |
| CH (1) | CH596880A5 (de) |
| DE (1) | DE2443899C3 (de) |
| FR (1) | FR2243732B1 (de) |
| GB (1) | GB1474119A (de) |
| IT (1) | IT1021324B (de) |
| NL (1) | NL7412183A (de) |
| SE (1) | SE407605B (de) |
| SU (1) | SU660571A3 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE68912262T2 (de) * | 1988-10-07 | 1994-05-11 | Sakai Chemical Industry Co | Katalysatoren und Verfahren zur Denitrierung. |
| DE3841990A1 (de) * | 1988-12-14 | 1990-06-21 | Degussa | Verfahren zur reduktion von stickoxiden aus abgasen |
| DE4014606A1 (de) * | 1989-05-15 | 1990-11-22 | Cottrell Res Inc | Reduktion von no(pfeil abwaerts)x(pfeil abwaerts) durch stufenweise brennstoffverbrennung mit acetylenartigen brennstoffen |
| JPH07106300B2 (ja) * | 1989-12-08 | 1995-11-15 | 財団法人産業創造研究所 | 燃焼排ガス中の窒素酸化物除去法 |
| DE102005010221A1 (de) * | 2005-03-05 | 2006-09-07 | S&B Industrial Minerals Gmbh | Verfahren zum Herstellen eines katalytisch wirkenden Minerals auf Basis eines Gerüstsilikates |
-
1974
- 1974-09-06 FR FR7430298A patent/FR2243732B1/fr not_active Expired
- 1974-09-10 AT AT728374A patent/AT344668B/de not_active IP Right Cessation
- 1974-09-10 CH CH1231774A patent/CH596880A5/xx not_active IP Right Cessation
- 1974-09-11 GB GB3968374A patent/GB1474119A/en not_active Expired
- 1974-09-12 SU SU742063265A patent/SU660571A3/ru active
- 1974-09-12 IT IT27226/74A patent/IT1021324B/it active
- 1974-09-12 SE SE7411524A patent/SE407605B/xx unknown
- 1974-09-13 DE DE2443899A patent/DE2443899C3/de not_active Expired
- 1974-09-13 BR BR7660/74A patent/BR7407660D0/pt unknown
- 1974-09-13 NL NL7412183A patent/NL7412183A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2243732A1 (de) | 1975-04-11 |
| DE2443899A1 (de) | 1975-04-03 |
| CH596880A5 (de) | 1978-03-31 |
| SU660571A3 (ru) | 1979-04-30 |
| AU7259874A (en) | 1976-02-26 |
| NL7412183A (nl) | 1975-03-17 |
| BR7407660D0 (pt) | 1975-07-08 |
| AT344668B (de) | 1978-08-10 |
| DE2443899B2 (de) | 1978-03-23 |
| SE407605B (sv) | 1979-04-02 |
| ATA728374A (de) | 1977-12-15 |
| DE2443899C3 (de) | 1978-11-30 |
| GB1474119A (en) | 1977-05-18 |
| SE7411524L (de) | 1975-03-14 |
| FR2243732B1 (de) | 1979-03-09 |
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