JPS6433012A - Production of globular silica - Google Patents
Production of globular silicaInfo
- Publication number
- JPS6433012A JPS6433012A JP18644887A JP18644887A JPS6433012A JP S6433012 A JPS6433012 A JP S6433012A JP 18644887 A JP18644887 A JP 18644887A JP 18644887 A JP18644887 A JP 18644887A JP S6433012 A JPS6433012 A JP S6433012A
- Authority
- JP
- Japan
- Prior art keywords
- silica
- sol
- xerogel
- purity
- hydrogel
- 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.)
- Granted
Links
Landscapes
- Silicon Compounds (AREA)
Abstract
PURPOSE:To obtain the title high-purity silica gel having excellent resistance to heat and wear by drying a specified silica hydrogel with superheated steam at high temp. to form a silica xerogel. CONSTITUTION:An aq. alkali silicate soln. contg. 5-30wt.% SiO2 is neutralized to 6-9 pH by an acid (e.g., sulfuric acid) to obtain a silica sol, and the sol is gelated within 0.5-3sec by spraying the sol into the air, etc., to obtain a high-purity silica hydrogel contg., on a dry basis, >=99.8% SiO2, <=0.01% Fe2O3' <=0.04% CaO, <=0.04% Na2O, and <=0.02% Al2O3. The hydrogel is previously aged, as required, in an autoclave at <=0.5-5kg/cm<2> pressure for 0.5-24hr, and then dried by superheated steam at 100-1000 deg.C to form a silica xerogel. The xerogel is further calcined, as required, and steamed to obtain high-purity globular silica having 0.8-1.8ml/g pore volume, 20-500 m<2>/g surface area, and 80-1000Angstrom mean pore diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18644887A JPH0764543B2 (en) | 1987-07-24 | 1987-07-24 | Spherical silica and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18644887A JPH0764543B2 (en) | 1987-07-24 | 1987-07-24 | Spherical silica and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6433012A true JPS6433012A (en) | 1989-02-02 |
| JPH0764543B2 JPH0764543B2 (en) | 1995-07-12 |
Family
ID=16188632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18644887A Expired - Fee Related JPH0764543B2 (en) | 1987-07-24 | 1987-07-24 | Spherical silica and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0764543B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1149992A (en) * | 1997-08-04 | 1999-02-23 | Fuji Silysia Chem Ltd | Delustering agent for paint and manufacture thereof |
| AU738176B2 (en) * | 1996-05-29 | 2001-09-13 | Delsitech Oy | Dissolvable oxides for biological applications |
| WO2008026387A1 (en) * | 2006-08-28 | 2008-03-06 | Catalysts & Chemicals Industries Co., Ltd. | Method of forming amorphous silica coating of low dielectric constant and amorphous silica coating of low dielectric constant obtained thereby |
| JP2013511461A (en) * | 2009-11-19 | 2013-04-04 | ベーエスハー ボッシュ ウント シーメンス ハオスゲレート ゲーエムベーハー | Method for producing porous SiO2 xerogel having characteristic pore diameter by bottom-up method using precursor having organic solid skeleton support |
| JP2013511460A (en) * | 2009-11-19 | 2013-04-04 | ベーエスハー ボッシュ ウント シーメンス ハオスゲレート ゲーエムベーハー | Porous SiO2 xerogel with characteristic pore size, its stable dry precursor and its use. |
| AU2007268589B2 (en) * | 2006-05-31 | 2013-05-23 | Fuji Silysia Chemical Ltd. | Agent for supplying silicic acid component to algae and method of supplying silicic acid component to algae |
-
1987
- 1987-07-24 JP JP18644887A patent/JPH0764543B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU738176B2 (en) * | 1996-05-29 | 2001-09-13 | Delsitech Oy | Dissolvable oxides for biological applications |
| JPH1149992A (en) * | 1997-08-04 | 1999-02-23 | Fuji Silysia Chem Ltd | Delustering agent for paint and manufacture thereof |
| AU2007268589B2 (en) * | 2006-05-31 | 2013-05-23 | Fuji Silysia Chemical Ltd. | Agent for supplying silicic acid component to algae and method of supplying silicic acid component to algae |
| WO2008026387A1 (en) * | 2006-08-28 | 2008-03-06 | Catalysts & Chemicals Industries Co., Ltd. | Method of forming amorphous silica coating of low dielectric constant and amorphous silica coating of low dielectric constant obtained thereby |
| JP2008053657A (en) * | 2006-08-28 | 2008-03-06 | Catalysts & Chem Ind Co Ltd | Forming method of low-dielectric constant amorphous silica-based coating and low-dielectric constant amorphous silica-based coating obtained by this method |
| US8227028B2 (en) | 2006-08-28 | 2012-07-24 | Jgc Catalysts And Chemicals Ltd. | Method for forming amorphous silica-based coating film with low dielectric constant and thus obtained amorphous silica-based coating film |
| JP2013511461A (en) * | 2009-11-19 | 2013-04-04 | ベーエスハー ボッシュ ウント シーメンス ハオスゲレート ゲーエムベーハー | Method for producing porous SiO2 xerogel having characteristic pore diameter by bottom-up method using precursor having organic solid skeleton support |
| JP2013511460A (en) * | 2009-11-19 | 2013-04-04 | ベーエスハー ボッシュ ウント シーメンス ハオスゲレート ゲーエムベーハー | Porous SiO2 xerogel with characteristic pore size, its stable dry precursor and its use. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0764543B2 (en) | 1995-07-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |