GB761430A - Process of preparing silica-alumina catalysts - Google Patents
Process of preparing silica-alumina catalystsInfo
- Publication number
- GB761430A GB761430A GB36486/54A GB3648654A GB761430A GB 761430 A GB761430 A GB 761430A GB 36486/54 A GB36486/54 A GB 36486/54A GB 3648654 A GB3648654 A GB 3648654A GB 761430 A GB761430 A GB 761430A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- silica
- hydrosol
- drying
- catalyst
- 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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Silicon Compounds (AREA)
- Catalysts (AREA)
Abstract
A silica/alumina catalyst is produced by forming an alkaline silica hydrosol, preferably formed at pH between 9.5 and 10.5; allowing the hydrosol to gel, preferably in aqueous slurry; co-mingling with resultant alkaline hydrogel sufficient aluminium sulphate solution, preferably of pH 1, to provide the desired alumina concentration in the final product; adding sufficient ammonia to effect precipitation of alumina; if desired ageing the mixture which usually has a pH of about 7.5 for about 15 minutes when the pH is about 7.0; finally washing and drying the product. The hydrosol may be formed from sodium silicate and a mineral acid, preferably sulphuric acid. The composition of the catalyst is preferably 87/13 silica/ alumina. Drying before the final washing and drying is a preferred feature. Comparison of the catalytic properties is made with the similar product produced according to Specification 753,695.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US761430XA | 1953-12-29 | 1953-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761430A true GB761430A (en) | 1956-11-14 |
Family
ID=22130176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36486/54A Expired GB761430A (en) | 1953-12-29 | 1954-12-16 | Process of preparing silica-alumina catalysts |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB761430A (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
- 1954-12-16 GB GB36486/54A patent/GB761430A/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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