GB686626A - Improvements in or relating to dried silica gel type catalysts and method of producing the same - Google Patents
Improvements in or relating to dried silica gel type catalysts and method of producing the sameInfo
- Publication number
- GB686626A GB686626A GB28936/50A GB2893650A GB686626A GB 686626 A GB686626 A GB 686626A GB 28936/50 A GB28936/50 A GB 28936/50A GB 2893650 A GB2893650 A GB 2893650A GB 686626 A GB686626 A GB 686626A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- grinding
- silica gel
- gel
- magnesia
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/12—Silica and alumina
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A dried gel catalyst in the form of regular spheroids of predetermined particle size, is prepared by grinding a wet hydrous silica gel, incorporating therewith either before or after grinding a minor proportion of hydrated alumina and/or magnesia, and drying the catalyst to a water content of less than 20 per cent by dispersing a 4-10 per cent aqueous suspension of the ground particles into a current of hot gases at 600 DEG -1000 DEG F, the extent of grinding being such that at least 95 per cent of the wet gel passes a 30 mesh screen, at least 50 per cent passes an 80 mesh screen, while while at least 50 per cent is retained on a 300 mesh screen. The silica gel is prepared by adding sodium silicate solution to dilute sulphuric acid with stirring. Alumina is incorporated by adding aluminium sulphate solution followed by ammonia; magnesia is added in finely ground form. The gel is washed, either before or after incorporating the alumina and/or magnesia, until the alkali metal salt content is reduced to less than 0.1 per cent (as Na2O) on the dry basis. Washing may take place either before or after grinding. The catalyst is suitable for use in a fluidized process for the cracking of petroleum fractions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US686626XA | 1949-12-14 | 1949-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB686626A true GB686626A (en) | 1953-01-28 |
Family
ID=22083962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28936/50A Expired GB686626A (en) | 1949-12-14 | 1950-11-27 | Improvements in or relating to dried silica gel type catalysts and method of producing the same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB686626A (en) |
-
1950
- 1950-11-27 GB GB28936/50A patent/GB686626A/en not_active Expired
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