FR1580578A - - Google Patents

Info

Publication number
FR1580578A
FR1580578A FR1580578DA FR1580578A FR 1580578 A FR1580578 A FR 1580578A FR 1580578D A FR1580578D A FR 1580578DA FR 1580578 A FR1580578 A FR 1580578A
Authority
FR
France
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
Application number
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR1580578A publication Critical patent/FR1580578A/fr
Expired legal-status Critical Current

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
    • 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
    • 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
    • C01B33/186—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof from or via fluosilicic acid or salts thereof by a wet process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/22—Fluorides
    • 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)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Silicon Compounds (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
FR1580578D 1967-08-12 1968-08-19 Expired FR1580578A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0053223 1967-08-12

Publications (1)

Publication Number Publication Date
FR1580578A true FR1580578A (fr) 1969-09-05

Family

ID=7106108

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1580578D Expired FR1580578A (fr) 1967-08-12 1968-08-19

Country Status (6)

Country Link
US (1) US3549317A (fr)
AT (1) AT286930B (fr)
DE (1) DE1667500A1 (fr)
FR (1) FR1580578A (fr)
GB (1) GB1239078A (fr)
NL (1) NL6811308A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218288A1 (fr) * 1973-02-17 1974-09-13 Bayer Ag
US4078043A (en) * 1974-02-15 1978-03-07 Kali-Chemie Aktiengesellschaft Process for preparing calcium fluoride from hexafluoro silicic acid and production of silicic acid gel or active silicic acid from said calcium fluoride

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213951A (en) * 1978-10-23 1980-07-22 Occidental Research Corporation Recovery of hydrofluoric acid from fluosilicic acid with high pH hydrolysis
US4213952A (en) * 1978-10-23 1980-07-22 Occidental Research Corporation Recovery of hydrofluoric acid from fluosilicic acid with high pH hydrolysis
US4298586A (en) * 1978-10-23 1981-11-03 Occidental Research Corp. Recovery of hydrofluoric acid from fluosilicic acid
US4308244A (en) * 1980-03-28 1981-12-29 Occidental Research Corp. Process for producing fluorine compounds and amorphous silica
AT375627B (de) * 1980-04-30 1984-08-27 Voest Alpine Ag Verfahren zur aufarbeitung von beim nassaufschluss von phosphaten anfallender kieselfluorwasserstoffsaeure sowie einrichtung zur durchfuehrung des verfahrens
US4915705A (en) * 1986-08-01 1990-04-10 Freeport Research And Engineering Co. Production of silica and fluorine-containing coproducts from fluosilicic acid
US5910297A (en) * 1997-07-31 1999-06-08 E. I. Du Pont De Nemours And Company Alkaline earth fluoride manufacturing process
US9994714B2 (en) * 2013-05-16 2018-06-12 Thomas E. Kane Silica protected pigments for use in artist media
WO2021079368A1 (fr) 2019-10-24 2021-04-29 IMI Tami Institute for Research and Development ltd Nouveau fondant/minéralisant pour la clinkérisation de ciment et procédé de fabrication associé
CN115192465A (zh) * 2021-04-08 2022-10-18 北京化工大学 CaF2@SiO2纳米颗粒或团簇体的制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1382165A (en) * 1919-08-30 1921-06-21 Howard B Bishop Process of making fluorids
US1634122A (en) * 1921-10-08 1927-06-28 Little Inc A Method of producing sodium fluoride
US2561304A (en) * 1947-10-30 1951-07-17 Philadelphia Quartz Co Process for the production of finely divided amorphous silica
US2588853A (en) * 1948-07-02 1952-03-11 Interchem Corp Method of producing silica powder
US2601235A (en) * 1949-06-15 1952-06-24 Du Pont Process for producing built-up silica particles
US2780521A (en) * 1954-03-22 1957-02-05 Int Minerals & Chem Corp Process for producing colloidal silicafree calcium fluoride
US2780523A (en) * 1954-03-22 1957-02-05 Int Minerals & Chem Corp Process for recovering solid calcium fluoride containing product and colloidal silica solution from a weak aqueous fluosilicic acid solution
US2881049A (en) * 1954-09-28 1959-04-07 Hoechst Ag Process of preparing alkali metal silicates
NL6502791A (fr) * 1965-03-05 1966-09-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218288A1 (fr) * 1973-02-17 1974-09-13 Bayer Ag
US4078043A (en) * 1974-02-15 1978-03-07 Kali-Chemie Aktiengesellschaft Process for preparing calcium fluoride from hexafluoro silicic acid and production of silicic acid gel or active silicic acid from said calcium fluoride

Also Published As

Publication number Publication date
AT286930B (de) 1970-12-28
NL6811308A (fr) 1969-02-14
US3549317A (en) 1970-12-22
GB1239078A (fr) 1971-07-14
DE1667500A1 (de) 1971-06-16

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Legal Events

Date Code Title Description
ST Notification of lapse