GB1337329A - Finely divided highly active silica - Google Patents
Finely divided highly active silicaInfo
- Publication number
- GB1337329A GB1337329A GB2023771A GB2023771A GB1337329A GB 1337329 A GB1337329 A GB 1337329A GB 2023771 A GB2023771 A GB 2023771A GB 2023771 A GB2023771 A GB 2023771A GB 1337329 A GB1337329 A GB 1337329A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silica
- finely divided
- sioh
- highly active
- active silica
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
- C09C1/30—Silicic acid
- C09C1/3009—Physical treatment, e.g. grinding; treatment with ultrasonic vibrations
- C09C1/3027—Drying, calcination
-
- 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
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/82—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
-
- 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
- C01P2006/82—Compositional purity water content
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
1337329 Finely divided active silica DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 19 April 1971 [31 Jan 1970] 20237/71 Heading C1A Finely divided, highly active silica is obtained by precipitating silica with acid from an alkali metal silicate solution, filtering off the silica and producing silica with a residual moisture content of 5-15% by weight (if necessary by means of heating), grinding the silica and heat treating the finely divided silica at 700‹ to 1000‹ C. for 1 to 10 seconds, preferably < 2 seconds, in a free-fall shaft in counter-current to a dry gas stream inert with respect to silica (e.g. air). A typical product of the above process is the novel, finely divided, highly active silica having isolated silanol groups (incapable of H-bonding) in its active surface but being completely free from adsorbed water and closely adjacent silanol groups (capable of hydrogen bonding), and having a silanol group density not exceeding 3À33 SiOH/100Š<SP>2</SP>(30Š<SP>2</SP>/SiOH), preferably 0À5 to 2À5 SiOH/100Š<SP>2</SP>.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702004443 DE2004443C3 (en) | 1970-01-31 | Process for the production of finely divided, highly active silica |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1337329A true GB1337329A (en) | 1973-11-14 |
Family
ID=5761085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2023771A Expired GB1337329A (en) | 1970-01-31 | 1971-04-19 | Finely divided highly active silica |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR2075083A5 (en) |
GB (1) | GB1337329A (en) |
NL (1) | NL174035C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4577566A (en) * | 1982-04-01 | 1986-03-25 | Betz Laboratories, Inc. | Method of conditioning fireside fouling deposits using large particle size amorphous silica |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2611196B1 (en) * | 1987-02-25 | 1990-07-27 | Rhone Poulenc Chimie | NOVEL LOW-RECOVERY PRECIPITATION SILICAS, THEIR PREPARATION PROCESS AND THEIR APPLICATION TO THE REINFORCEMENT OF SILICON ELASTOMERS |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR74765E (en) * | 1958-01-02 | 1961-01-16 | Bayer Ag | Process for the calcination of charges of silicic acid and silicates |
-
1970
- 1970-12-23 FR FR7046550A patent/FR2075083A5/fr not_active Expired
-
1971
- 1971-01-04 NL NLAANVRAGE7100020,A patent/NL174035C/en not_active IP Right Cessation
- 1971-04-19 GB GB2023771A patent/GB1337329A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4577566A (en) * | 1982-04-01 | 1986-03-25 | Betz Laboratories, Inc. | Method of conditioning fireside fouling deposits using large particle size amorphous silica |
Also Published As
Publication number | Publication date |
---|---|
NL7100020A (en) | 1971-08-03 |
DE2004443B2 (en) | 1976-02-05 |
NL174035C (en) | 1984-04-16 |
NL174035B (en) | 1983-11-16 |
FR2075083A5 (en) | 1971-10-08 |
DE2004443A1 (en) | 1971-08-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |