GB816581A - Process for the preparation of silica sols - Google Patents
Process for the preparation of silica solsInfo
- Publication number
- GB816581A GB816581A GB1730/56A GB173056A GB816581A GB 816581 A GB816581 A GB 816581A GB 1730/56 A GB1730/56 A GB 1730/56A GB 173056 A GB173056 A GB 173056A GB 816581 A GB816581 A GB 816581A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- silica
- specifications
- per cent
- aqueous
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract 8
- 239000000377 silicon dioxide Substances 0.000 title abstract 4
- 229910052910 alkali metal silicate Inorganic materials 0.000 abstract 2
- 229910000497 Amalgam Inorganic materials 0.000 abstract 1
- 229910001413 alkali metal ion Inorganic materials 0.000 abstract 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical group 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 235000019795 sodium metasilicate Nutrition 0.000 abstract 1
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
An aqueous silica sol, of concentration greater than 15 per cent by weight of silica and average diameter 710 millimicrons, is obtained by heating above 50 DEG C. an aqueous, alkali-metal silicate solution, preferably Na2SiO3 (10 per cent SiO2); electrolysing the solution to remove alkali metal ions and oxygen using a mercury cathode until the weight ratio silica: alkali metal oxide is greater than 50:1, preferably 130:1 to 200:1, and removing water if desired to concentrate the sol. During electrolysis when alkali metal forms an amalgam with the cathode, alkali metal silicate may be added to maintain the desired concentrations. Specifications 645,703, 667,154 and U.S.A. Specifications 1,562,940, 1,853,420 and 2,375,738 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US816581XA | 1955-03-04 | 1955-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816581A true GB816581A (en) | 1959-07-15 |
Family
ID=22165547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1730/56A Expired GB816581A (en) | 1955-03-04 | 1956-01-18 | Process for the preparation of silica sols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387008A (en) | 1979-10-01 | 1983-06-07 | W. R. Grace & Co. | Electrodialytic method for production of silica gel |
-
1956
- 1956-01-18 GB GB1730/56A patent/GB816581A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387008A (en) | 1979-10-01 | 1983-06-07 | W. R. Grace & Co. | Electrodialytic method for production of silica gel |
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