GB883863A - Stabilization of silica - Google Patents
Stabilization of silicaInfo
- Publication number
- GB883863A GB883863A GB18784/58A GB1878458A GB883863A GB 883863 A GB883863 A GB 883863A GB 18784/58 A GB18784/58 A GB 18784/58A GB 1878458 A GB1878458 A GB 1878458A GB 883863 A GB883863 A GB 883863A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silica
- surface area
- treated
- stabilization
- temperature
- 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
-
- 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
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
- C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The surface area of hydrated finely divided silica, which has been precipitated from aqueous alkali metal silicate solution, is stabilized by heating the silica for a period of 0,5-25 mins. at a temperature of above 100 DEG C., preferably 120 DEG -300 DEG C., in a pressure vessel as an aqueous dispersion having a pH above 5. The hot dispersion may be cooled by dilution with water at a temperature below 100 DEG C. The surface area of the silica treated may be 10-200 sq. m/gm. and its particle size may be 0,015-0,2 micron. The treated silica may be washed with hydrochloric, sulphuric, nitric or acetic acid. Specification 745,822 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US883863XA | 1957-09-03 | 1957-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB883863A true GB883863A (en) | 1961-12-06 |
Family
ID=22211076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18784/58A Expired GB883863A (en) | 1957-09-03 | 1958-06-12 | Stabilization of silica |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB883863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2471947A1 (en) * | 1979-12-20 | 1981-06-26 | Rhone Poulenc Ind | PRECIPITATION SILICE, IN PARTICULAR AS A REINFORCING LOAD |
-
1958
- 1958-06-12 GB GB18784/58A patent/GB883863A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2471947A1 (en) * | 1979-12-20 | 1981-06-26 | Rhone Poulenc Ind | PRECIPITATION SILICE, IN PARTICULAR AS A REINFORCING LOAD |
| EP0031271B1 (en) * | 1979-12-20 | 1985-05-08 | Rhone-Poulenc Chimie | Precipitated silica especially utilizable as reinforcing filling |
| US4704425A (en) * | 1979-12-20 | 1987-11-03 | Rhone-Poulenc Industries | Novel precipitated silica particulates |
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