FR2471948A1 - Nouveau procede d'obtention d'un gateau de silice precipitee a lavabilite amelioree, et produit obtenu - Google Patents
Nouveau procede d'obtention d'un gateau de silice precipitee a lavabilite amelioree, et produit obtenu Download PDFInfo
- Publication number
- FR2471948A1 FR2471948A1 FR7931215A FR7931215A FR2471948A1 FR 2471948 A1 FR2471948 A1 FR 2471948A1 FR 7931215 A FR7931215 A FR 7931215A FR 7931215 A FR7931215 A FR 7931215A FR 2471948 A1 FR2471948 A1 FR 2471948A1
- Authority
- FR
- France
- Prior art keywords
- acid
- silica
- water
- added
- reaction medium
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000002253 acid Substances 0.000 title claims abstract description 39
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 24
- 229910052910 alkali metal silicate Inorganic materials 0.000 title claims abstract description 14
- 238000010790 dilution Methods 0.000 title claims description 6
- 239000012895 dilution Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000012429 reaction media Substances 0.000 claims abstract description 14
- 230000010494 opalescence Effects 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 29
- 238000001556 precipitation Methods 0.000 claims description 11
- 230000005070 ripening Effects 0.000 claims description 6
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 230000020477 pH reduction Effects 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 150000004760 silicates Chemical class 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 238000011067 equilibration Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 239000011734 sodium Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000002535 acidifier Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 241001408653 Siona Species 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000010411 postconditioning Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 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
- C01B33/18—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
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- 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
-
- 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
- C01P2006/80—Compositional purity
-
- 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
- C01P2006/80—Compositional purity
- C01P2006/82—Compositional purity water content
-
- 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
- C01P2006/90—Other properties not specified above
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7931215A FR2471948A1 (fr) | 1979-12-20 | 1979-12-20 | Nouveau procede d'obtention d'un gateau de silice precipitee a lavabilite amelioree, et produit obtenu |
| BR8008342A BR8008342A (pt) | 1979-12-20 | 1980-12-19 | Processo para melhorar a lavabilidade de uma torta de silica precipitada a produto obtido |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7931215A FR2471948A1 (fr) | 1979-12-20 | 1979-12-20 | Nouveau procede d'obtention d'un gateau de silice precipitee a lavabilite amelioree, et produit obtenu |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2471948A1 true FR2471948A1 (fr) | 1981-06-26 |
| FR2471948B1 FR2471948B1 (show.php) | 1983-07-18 |
Family
ID=9232990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7931215A Granted FR2471948A1 (fr) | 1979-12-20 | 1979-12-20 | Nouveau procede d'obtention d'un gateau de silice precipitee a lavabilite amelioree, et produit obtenu |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BR8008342A (show.php) |
| FR (1) | FR2471948A1 (show.php) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2588858A (en) * | 1947-10-07 | 1952-03-11 | Lehmann Frantisek | Circuit arrangement for discharge tubes, particularly glow discharge tubes |
| FR1352354A (fr) * | 1962-03-02 | 1964-02-14 | Degussa | Procédé de fabrication de silice en fine division par réaction de solutions de silicates alcalins avec des solutions d'acides et produits conformes à ceux obtenus |
| US3307906A (en) * | 1965-05-24 | 1967-03-07 | Jr Oliver W Burke | Silica pigments and preparation thereof |
| US3503707A (en) * | 1968-05-20 | 1970-03-31 | Burke Oliver W Jun | Silica pigments and preparation thereof |
| FR2159580A5 (show.php) * | 1971-11-04 | 1973-06-22 | Sifrance | |
| FR2208950A1 (en) * | 1972-09-06 | 1974-06-28 | Sifrance | Silicon oxide pigments used for toothpaste prodn - made by stepwise acid-ification of alkali metal silicate solns |
-
1979
- 1979-12-20 FR FR7931215A patent/FR2471948A1/fr active Granted
-
1980
- 1980-12-19 BR BR8008342A patent/BR8008342A/pt unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2588858A (en) * | 1947-10-07 | 1952-03-11 | Lehmann Frantisek | Circuit arrangement for discharge tubes, particularly glow discharge tubes |
| FR1352354A (fr) * | 1962-03-02 | 1964-02-14 | Degussa | Procédé de fabrication de silice en fine division par réaction de solutions de silicates alcalins avec des solutions d'acides et produits conformes à ceux obtenus |
| US3307906A (en) * | 1965-05-24 | 1967-03-07 | Jr Oliver W Burke | Silica pigments and preparation thereof |
| US3503707A (en) * | 1968-05-20 | 1970-03-31 | Burke Oliver W Jun | Silica pigments and preparation thereof |
| FR2159580A5 (show.php) * | 1971-11-04 | 1973-06-22 | Sifrance | |
| FR2208950A1 (en) * | 1972-09-06 | 1974-06-28 | Sifrance | Silicon oxide pigments used for toothpaste prodn - made by stepwise acid-ification of alkali metal silicate solns |
Also Published As
| Publication number | Publication date |
|---|---|
| BR8008342A (pt) | 1981-07-07 |
| FR2471948B1 (show.php) | 1983-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |