FR2209713A2 - Catalyst contg. alkali metal oxide for ammonia oxidn. - in bismuth oxide and cobalt oxide base contg. promoter - Google Patents
Catalyst contg. alkali metal oxide for ammonia oxidn. - in bismuth oxide and cobalt oxide base contg. promoterInfo
- Publication number
- FR2209713A2 FR2209713A2 FR7243617A FR7243617A FR2209713A2 FR 2209713 A2 FR2209713 A2 FR 2209713A2 FR 7243617 A FR7243617 A FR 7243617A FR 7243617 A FR7243617 A FR 7243617A FR 2209713 A2 FR2209713 A2 FR 2209713A2
- Authority
- FR
- France
- Prior art keywords
- oxide
- contg
- catalyst
- alkali metal
- oxidn
- 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
Classifications
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- 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
- B01J37/04—Mixing
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- 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
-
- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The catalytic oxidn. of NH3 to the oxides of N is effected by passing NH3/NH3 + air mixts. (ratio 0.05-0.12) through a fixed catalyst bed at 20,000-200,000 n1/hr. (or a fluidised bed consisting of 50-700 mu m particles at 50-2,000 n1/hr.) 1-20 bars and 50-200 degrees C where the air may be O-enriched and where the catalyst consists of >=80 wt.% Bi2O3 and Co3O4 together with 0.05-0.5% of an alkali metal oxide (pref. H2O). The catalyst can contain rare earth oxides, e.g., Ce, Nd, La, Th at 0.5-20 wt.% as promoters together with 0.5-20% of >=1 of , MN, Mo, Fe, Mg, Cr, V, Nb is oxide form. The catalyst, 0.5-100 m2g-1 surface area, is prepd. by mixing all or some of the components as nitrates, the remainder being oxides or carbonates and firing the mixt. at approx. 700 degrees C to obtain a spinal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7243617A FR2209713A2 (en) | 1972-12-07 | 1972-12-07 | Catalyst contg. alkali metal oxide for ammonia oxidn. - in bismuth oxide and cobalt oxide base contg. promoter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7243617A FR2209713A2 (en) | 1972-12-07 | 1972-12-07 | Catalyst contg. alkali metal oxide for ammonia oxidn. - in bismuth oxide and cobalt oxide base contg. promoter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2209713A2 true FR2209713A2 (en) | 1974-07-05 |
| FR2209713B3 FR2209713B3 (en) | 1978-02-17 |
Family
ID=9108359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7243617A Granted FR2209713A2 (en) | 1972-12-07 | 1972-12-07 | Catalyst contg. alkali metal oxide for ammonia oxidn. - in bismuth oxide and cobalt oxide base contg. promoter |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2209713A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041276A (en) * | 1989-01-23 | 1991-08-20 | Imperial Chemical Industries Plc | Ammonia oxidation |
| WO2024069069A1 (en) | 2022-09-26 | 2024-04-04 | Stellantis Auto Sas | Window post trim and dashboard insert |
-
1972
- 1972-12-07 FR FR7243617A patent/FR2209713A2/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041276A (en) * | 1989-01-23 | 1991-08-20 | Imperial Chemical Industries Plc | Ammonia oxidation |
| WO2024069069A1 (en) | 2022-09-26 | 2024-04-04 | Stellantis Auto Sas | Window post trim and dashboard insert |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2209713B3 (en) | 1978-02-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |