GB1000772A - Decomposition of ammonia - Google Patents
Decomposition of ammoniaInfo
- Publication number
- GB1000772A GB1000772A GB48473/62A GB4847362A GB1000772A GB 1000772 A GB1000772 A GB 1000772A GB 48473/62 A GB48473/62 A GB 48473/62A GB 4847362 A GB4847362 A GB 4847362A GB 1000772 A GB1000772 A GB 1000772A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- nickel
- salt
- catalyst
- ammonia
- 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.)
- Expired
Links
Classifications
-
- 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
- C01B21/02—Preparation of nitrogen
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/047—Decomposition of ammonia
-
- 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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Catalysts (AREA)
Abstract
Ammonia is decomposed to nitrogen and hydrogen by passing it over a catalyst, consisting of nickel supported on alumina, maintained at 600-900 DEG C., the alumina having before the application of nickel to it a specific surface of more than 20 m.2/gm. The alumina may be made by heating alumina monohydrate or trihydrate at 500-1000 DEG C. for 2 hours. The catalyst support is desirably at least partly gamma alumina and may be converted to kappa during use, but not more than 20% of the alumina should be in the alpha form. The nickel content of the catalyst may be up to 50% by weight. The alumina hydrates may be made by seeding or carbonation of a sodium aluminate solution. The catalyst, which should be sulphur free (<0.5%) may be made by impregnating alumina with a sulphur-free nickel salt, especially nickel nitrate, then draining, drying and converting the salt to metallic nickel. After the drying stage the impregnation may be repeated in order to increase the content of nickel salt. In converting the salt to nickel the salt may be first decomposed to the oxide by heating, then reduced by hydrogen or ammonia. The reduction is conveniently carried out in the catalyst chamber of the NH3 cracking plant. Specification 768,091 is referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB48473/62A GB1000772A (en) | 1962-12-21 | 1962-12-21 | Decomposition of ammonia |
| BE641469A BE641469A (en) | 1962-12-21 | 1963-12-18 | |
| LU45057D LU45057A1 (en) | 1962-12-21 | 1963-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB48473/62A GB1000772A (en) | 1962-12-21 | 1962-12-21 | Decomposition of ammonia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1000772A true GB1000772A (en) | 1965-08-11 |
Family
ID=10448740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB48473/62A Expired GB1000772A (en) | 1962-12-21 | 1962-12-21 | Decomposition of ammonia |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE641469A (en) |
| GB (1) | GB1000772A (en) |
| LU (1) | LU45057A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081510A (en) * | 1975-10-15 | 1978-03-28 | Hitachi, Ltd. | Process for catalytically treating an exhaust gas containing ammonia gas and oxygen gas to reduce said ammonia gas to nitrogen |
| US5169825A (en) * | 1990-02-28 | 1992-12-08 | Tomita Pharmaceutical Co., Ltd. | Ammonium ion- and ammonia-selective adsorbent and process for preparation of same |
| US5632964A (en) * | 1994-06-13 | 1997-05-27 | Japan Pionics Co., Ltd. | Cleaning method for exhaust gas containing ammonia and silane |
| TWI400122B (en) * | 2009-12-18 | 2013-07-01 | China Steel Corp | Preparation of Ammonia Pyrolysis Catalysts |
| EP2332646A4 (en) * | 2008-09-17 | 2015-07-22 | Nippon Catalytic Chem Ind | Catalyst for ammonia decomposition, process for producing same, and method of treating ammonia |
-
1962
- 1962-12-21 GB GB48473/62A patent/GB1000772A/en not_active Expired
-
1963
- 1963-12-18 BE BE641469A patent/BE641469A/xx unknown
- 1963-12-19 LU LU45057D patent/LU45057A1/xx unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081510A (en) * | 1975-10-15 | 1978-03-28 | Hitachi, Ltd. | Process for catalytically treating an exhaust gas containing ammonia gas and oxygen gas to reduce said ammonia gas to nitrogen |
| US5169825A (en) * | 1990-02-28 | 1992-12-08 | Tomita Pharmaceutical Co., Ltd. | Ammonium ion- and ammonia-selective adsorbent and process for preparation of same |
| US5632964A (en) * | 1994-06-13 | 1997-05-27 | Japan Pionics Co., Ltd. | Cleaning method for exhaust gas containing ammonia and silane |
| EP2332646A4 (en) * | 2008-09-17 | 2015-07-22 | Nippon Catalytic Chem Ind | Catalyst for ammonia decomposition, process for producing same, and method of treating ammonia |
| TWI400122B (en) * | 2009-12-18 | 2013-07-01 | China Steel Corp | Preparation of Ammonia Pyrolysis Catalysts |
Also Published As
| Publication number | Publication date |
|---|---|
| BE641469A (en) | 1964-06-18 |
| LU45057A1 (en) | 1964-02-19 |
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