GB448125A - Improvements in or relating to the production of silicic acid gels - Google Patents
Improvements in or relating to the production of silicic acid gelsInfo
- Publication number
- GB448125A GB448125A GB34508/34A GB3450834A GB448125A GB 448125 A GB448125 A GB 448125A GB 34508/34 A GB34508/34 A GB 34508/34A GB 3450834 A GB3450834 A GB 3450834A GB 448125 A GB448125 A GB 448125A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- hydrogel
- alcohols
- particles
- earth metal
- 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
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Silicon Compounds (AREA)
Abstract
A porous silica gel, suitable for use as a catalyst or catalyst carrier in the formation of olefines from alcohols or the condensation of alcohols with ammonia, is obtained by preparing a silicic acid hydrogel, thoroughly distributing a finely divided alkaline earth metal carbonate throughout the body of the hydrogel, forming the wet mass, e.g. by extrusion, into individual particles, drying the particles and extracting the alkaline earth metal carbonate therefrom by means of an acid. The resulting gels may be used either alone or when impregnated with aluminium or other oxide.ALSO:A porous silica gel, suitable in particular for use as a catalyst or catalyst carrier, is obtained by preparing a silicic acid hydrogel, thoroughly distributing a finely divided alkaline earth metal carbonate throughout the body of the hydrogel, forming the wet mass, e.g. by extrusion, into individual particles, drying the particles and extracting the alkaline earth metal carbonate therefrom by means of an acid. After treatment with acid the particles may be washed with water and dried. Barium, strontium, calcium or magnesium carbonate may be employed and hydrochloric acid is a suitable acid. The hydrogel may be obtained by the reaction of sodium silicate solution with hydrochloric acid at 20 DEG C., the resulting hydrosol having a pH of 6,8 to 7,6. The resulting gels may be used as carriers for vanadium or platinum compounds for the conversion of sulphur dioxide into sulphur trioxide; the conversion of burner gases at 430--440 DEG C. is referred to. The gels may also be used either alone or when impregnated with aluminium or other oxides in dehydration or condensation reactions, such as the formation of olefines from alcohols or the condensation of alcohols with ammonia or amines.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US448125XA | 1933-12-01 | 1933-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB448125A true GB448125A (en) | 1936-06-02 |
Family
ID=21934461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34508/34A Expired GB448125A (en) | 1933-12-01 | 1934-11-30 | Improvements in or relating to the production of silicic acid gels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB448125A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3170956A (en) * | 1959-11-13 | 1965-02-23 | Monsanto Co | Method for producing n-substituted naphthylamines |
| WO2023040965A1 (en) * | 2021-09-17 | 2023-03-23 | 中科润资(重庆)节能科技有限公司 | Rare earth-doped silicon dioxide aerogel, and preparation method therefor and use thereof |
-
1934
- 1934-11-30 GB GB34508/34A patent/GB448125A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3170956A (en) * | 1959-11-13 | 1965-02-23 | Monsanto Co | Method for producing n-substituted naphthylamines |
| WO2023040965A1 (en) * | 2021-09-17 | 2023-03-23 | 中科润资(重庆)节能科技有限公司 | Rare earth-doped silicon dioxide aerogel, and preparation method therefor and use thereof |
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