GB801766A - Improvements in or relating to producing alumina - Google Patents
Improvements in or relating to producing aluminaInfo
- Publication number
- GB801766A GB801766A GB23814/56A GB2381456A GB801766A GB 801766 A GB801766 A GB 801766A GB 23814/56 A GB23814/56 A GB 23814/56A GB 2381456 A GB2381456 A GB 2381456A GB 801766 A GB801766 A GB 801766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gibbsite
- alumina
- produced
- bohmite
- per cent
- 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
-
- 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
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/42—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation
- C01F7/428—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation by oxidation in an aqueous solution
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G11/02—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils characterised by the catalyst used
- C10G11/04—Oxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Alumina is produced by reacting sub-divided metallic aluminium of at least 99.5 per cent purity with water maintained in the liquid phase at a temperature in excess of 120 DEG C. but below 374 DEG C. until the major portion of the metal has been converted to alumina. The water employed must be distilled or deionized and the reaction is effected in the absence of promoters. Gibbsite is produced if the temperature is from 120 DEG to 250 DEG C. whilst bohmite is produced at higher temperatures. According to a typical example aluminium chips of greater than 99.9 per cent purity were added to distilled water and placed in an autoclave which was heated to 300 DEG C. after having been flushed with nitrogen and sealed. A maximum pressure of 165 atmospheres was reached and the white granular gamma alumina monohydrate product was calcined at 650 DEG C. to give gamma alumina of an average crystallite size of 5 to 10 microns. Further examples relate to the production of gibbsite and mixtures of bohmite and gibbsite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB23814/56A GB801766A (en) | 1956-08-02 | 1956-08-02 | Improvements in or relating to producing alumina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB23814/56A GB801766A (en) | 1956-08-02 | 1956-08-02 | Improvements in or relating to producing alumina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB801766A true GB801766A (en) | 1958-09-24 |
Family
ID=10201744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23814/56A Expired GB801766A (en) | 1956-08-02 | 1956-08-02 | Improvements in or relating to producing alumina |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB801766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115321569A (en) * | 2022-07-25 | 2022-11-11 | 四川大学 | Preparation method of diaspore |
-
1956
- 1956-08-02 GB GB23814/56A patent/GB801766A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115321569A (en) * | 2022-07-25 | 2022-11-11 | 四川大学 | Preparation method of diaspore |
| CN115321569B (en) * | 2022-07-25 | 2024-05-10 | 四川大学 | Preparation method of diaspore |
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