GB753695A - A process for the manufacture of silica-alumina catalyst - Google Patents
A process for the manufacture of silica-alumina catalystInfo
- Publication number
- GB753695A GB753695A GB11372/54A GB1137254A GB753695A GB 753695 A GB753695 A GB 753695A GB 11372/54 A GB11372/54 A GB 11372/54A GB 1137254 A GB1137254 A GB 1137254A GB 753695 A GB753695 A GB 753695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silica
- acid
- catalyst
- ammonia
- slurry
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
Silica-alumina catalyst is prepared by forming an alkaline silica hydrogel, mixing with sufficient acid to reduce the pH to between 6.0 and 8.0, commingling with aluminium sulphate solution and then precipitating alumina by addition of an alkaline precipitant, e.g. ammonia. A slurry of silica hydrogel is formed by mixing sodium silicate solution with sulphuric or hydrochloric acid and is aged at a pH of 9.5-10.5 for 10-20 minutes; after reduction of the pH to 6.0-8.0 by addition of sulphuric acid, the slurry is again aged for a short time and then mixed with aluminium sulphate solution which may contain 1.5-2.5 per cent by weight of sulphuric acid; ammonia is then added and the product filtered, reslurried, and spray dried; the microspheroidal particles are washed and redried. Alternatively, the product may be ground or formed into pellets. It is suitable as a cracking catalyst or as a carrier for a platinum reforming catalyst. A preferred AP2O3:SiO2 ratio is 13:87.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US753695XA | 1953-04-27 | 1953-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB753695A true GB753695A (en) | 1956-07-25 |
Family
ID=22125251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11372/54A Expired GB753695A (en) | 1953-04-27 | 1954-04-20 | A process for the manufacture of silica-alumina catalyst |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB753695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672494A (en) * | 2020-06-10 | 2020-09-18 | 江苏扬农化工集团有限公司 | Preparation method of composite catalyst for synthesizing hexamethylene diamine intermediate and application of composite catalyst |
-
1954
- 1954-04-20 GB GB11372/54A patent/GB753695A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672494A (en) * | 2020-06-10 | 2020-09-18 | 江苏扬农化工集团有限公司 | Preparation method of composite catalyst for synthesizing hexamethylene diamine intermediate and application of composite catalyst |
| CN111672494B (en) * | 2020-06-10 | 2023-06-02 | 江苏扬农化工集团有限公司 | Preparation method of composite catalyst for synthesizing hexamethylenediamine intermediate and application of composite catalyst |
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