FR2321900A1 - Purificn. of air from ozone using silver manganese catalyst - gives stable redn. at low temp. - Google Patents
Purificn. of air from ozone using silver manganese catalyst - gives stable redn. at low temp.Info
- Publication number
- FR2321900A1 FR2321900A1 FR7526716A FR7526716A FR2321900A1 FR 2321900 A1 FR2321900 A1 FR 2321900A1 FR 7526716 A FR7526716 A FR 7526716A FR 7526716 A FR7526716 A FR 7526716A FR 2321900 A1 FR2321900 A1 FR 2321900A1
- Authority
- FR
- France
- Prior art keywords
- air
- purificn
- degrees
- redn
- ozone
- 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.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title abstract 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title 1
- RQCJDSANJOCRMV-UHFFFAOYSA-N [Mn].[Ag] Chemical compound [Mn].[Ag] RQCJDSANJOCRMV-UHFFFAOYSA-N 0.000 title 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract 5
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 238000010494 dissociation reaction Methods 0.000 abstract 1
- 230000005593 dissociations Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
- B01D53/8675—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
- B64D2013/0603—Environmental Control Systems
- B64D2013/0685—Environmental Control Systems with ozone control
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
Catalytic dissociation of O2 in air is carried out in the presence of a Ag-Mn catalyst, pref. at a volume throughput of 10000 h-1 at 20 degrees C or 10000 h-1 at 50 degrees C. The process is stable and effective enough for purificn. of dry or moist air from O3 at 20 degrees C, the O3 concn. being reduced from 1.0-0.1 vol % to under 0.005 ppm. The catalyst can be prepd. by promoting pyrolusite ore with 1 wt % Ag or synthetic MnO2 with 2.2 wt % Ag, the latter giving the higher activity. The O3 content of air with 80% RH at 10 degrees C was reduced from 0.01% to 0.05 ppm at a throughput of 5000 h-1 and normal pressure over a Ag-Mn catalyst based on synthetic MnO2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7526716A FR2321900A1 (en) | 1975-08-29 | 1975-08-29 | Purificn. of air from ozone using silver manganese catalyst - gives stable redn. at low temp. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7526716A FR2321900A1 (en) | 1975-08-29 | 1975-08-29 | Purificn. of air from ozone using silver manganese catalyst - gives stable redn. at low temp. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2321900A1 true FR2321900A1 (en) | 1977-03-25 |
| FR2321900B1 FR2321900B1 (en) | 1980-05-30 |
Family
ID=9159493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7526716A Granted FR2321900A1 (en) | 1975-08-29 | 1975-08-29 | Purificn. of air from ozone using silver manganese catalyst - gives stable redn. at low temp. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2321900A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2436626A1 (en) * | 1978-09-22 | 1980-04-18 | Dart Ind Inc | CATALYST AND CATALYTIC DEVICE FOR SEPARATING OZONE |
| FR2441419A1 (en) * | 1978-11-18 | 1980-06-13 | Benckiser Gmbh Joh A | CATALYST FOR THE DESTRUCTION OF OZONE INTO AIR OR OTHER GASES CONTAINING IT |
| EP0367574A2 (en) * | 1988-10-31 | 1990-05-09 | Sakai Chemical Industry Co., Ltd., | Ozone decomposition catalyst and method |
| EP0371740A1 (en) * | 1988-11-28 | 1990-06-06 | Sakai Chemical Industry Co., Ltd., | Catalyst and method for ozone decomposition |
-
1975
- 1975-08-29 FR FR7526716A patent/FR2321900A1/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2436626A1 (en) * | 1978-09-22 | 1980-04-18 | Dart Ind Inc | CATALYST AND CATALYTIC DEVICE FOR SEPARATING OZONE |
| FR2441419A1 (en) * | 1978-11-18 | 1980-06-13 | Benckiser Gmbh Joh A | CATALYST FOR THE DESTRUCTION OF OZONE INTO AIR OR OTHER GASES CONTAINING IT |
| EP0367574A2 (en) * | 1988-10-31 | 1990-05-09 | Sakai Chemical Industry Co., Ltd., | Ozone decomposition catalyst and method |
| EP0367574A3 (en) * | 1988-10-31 | 1991-02-27 | Sakai Chemical Industry Co., Ltd., | Ozone decomposition catalyst and method |
| EP0371740A1 (en) * | 1988-11-28 | 1990-06-06 | Sakai Chemical Industry Co., Ltd., | Catalyst and method for ozone decomposition |
| EP0487506A1 (en) * | 1988-11-28 | 1992-05-27 | Sakai Chemical Industry Co., Ltd., | Catalyst and method for ozone decomposition |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2321900B1 (en) | 1980-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |