GB845565A - Improvements in or relating to processes for producing mixed alumina/silica gels - Google Patents
Improvements in or relating to processes for producing mixed alumina/silica gelsInfo
- Publication number
- GB845565A GB845565A GB518358A GB518358A GB845565A GB 845565 A GB845565 A GB 845565A GB 518358 A GB518358 A GB 518358A GB 518358 A GB518358 A GB 518358A GB 845565 A GB845565 A GB 845565A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- processes
- silica gels
- producing mixed
- mixed alumina
- 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
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0056—Preparation of gels containing inorganic material and water
- B01J13/006—Preparation of gels containing inorganic material and water by precipitation, coagulation, hydrolyse coacervation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
An alumina-silica gel is produced by mixing kaolin with a Na or K compound and calcining the mixture, the said compound being such that a Na- or K-Al, silicate results, then dissolving in acid to bring the pH below 4 (preferably about 2), whereafter the pH is brought to 5 or above (preferably 7-10), in which condition the solution gels. The following features are preferred:- (a) calcination temperature about 800 DEG C.; (b) aqueous sulphuric or hydrochloric acid is used; (c) use of NaOH, KOH, Na2CO3, K2CO3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB518358A GB845565A (en) | 1958-02-18 | 1958-02-18 | Improvements in or relating to processes for producing mixed alumina/silica gels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB518358A GB845565A (en) | 1958-02-18 | 1958-02-18 | Improvements in or relating to processes for producing mixed alumina/silica gels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB845565A true GB845565A (en) | 1960-08-24 |
Family
ID=9791267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB518358A Expired GB845565A (en) | 1958-02-18 | 1958-02-18 | Improvements in or relating to processes for producing mixed alumina/silica gels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB845565A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172726A (en) * | 1965-03-09 | Cyclic process for producing silica pigment | ||
| US3172727A (en) * | 1965-03-09 | Cyclic process for producing silica pigment |
-
1958
- 1958-02-18 GB GB518358A patent/GB845565A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172726A (en) * | 1965-03-09 | Cyclic process for producing silica pigment | ||
| US3172727A (en) * | 1965-03-09 | Cyclic process for producing silica pigment |
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