GB893522A - Improvements in and relating to the production of metal oxide powders - Google Patents

Improvements in and relating to the production of metal oxide powders

Info

Publication number
GB893522A
GB893522A GB20014/59A GB2001459A GB893522A GB 893522 A GB893522 A GB 893522A GB 20014/59 A GB20014/59 A GB 20014/59A GB 2001459 A GB2001459 A GB 2001459A GB 893522 A GB893522 A GB 893522A
Authority
GB
United Kingdom
Prior art keywords
finely divided
oxygen
detonation
metal
mixture
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
Application number
GB20014/59A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 by Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB893522A publication Critical patent/GB893522A/en
Expired legal-status Critical Current

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
    • 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
    • C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • 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
    • C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • C01B33/183—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane
    • 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
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/42—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation
    • C01F7/422—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation by oxidation with a gaseous oxidator at a high temperature
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Silicon Compounds (AREA)

Abstract

Finely divided metal oxides (the term "metal" includes silicon) are produced by introducing a metal powder or a volatilizable metal compound into a detonable charge comprising an oxygen/fuel mixture which produces an oxidizing atmosphere on detonation, and igniting to produce a detonation wave whereby the oxides produced are carried towards a collecting means where they may be recovered as such or as a coating on a target surface. Purging of the reaction chamber is effected by a combination of shock waves and the intermittent non-ignited oxidant/fuel mixture flow. In the case of titanium, magnesium and aluminium, the finely divided metal in combination with oxygen may form the detonable charge. According to Examples, (1) finely divided aluminium contained in a nitrogen carrier gas was mixed with an oxygen-acetylene mixture and introduced into a detonation chamber, where it was sparked at 4 times per second. Finely divided alumina was collected in an enlarged collecting zone or on a target surface. A silica may be produced from silicon powder by a similar method. (4) Silicon tetrachloride was mixed with an oxygen-acetylene detonable charge and subjected to detonation to produce a silica having a surface area of 107 sq. meters per gram. Further Examples relate to the use of a mixture of silicon tetrachloride and hexamethyldiethoxy silane and a mixture of silicon powder and dimethyldiethoxy silane to produce finely divided silica. Specification 742,458 is referred to.
GB20014/59A 1958-07-18 1959-06-11 Improvements in and relating to the production of metal oxide powders Expired GB893522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US893522XA 1958-07-18 1958-07-18

Publications (1)

Publication Number Publication Date
GB893522A true GB893522A (en) 1962-04-11

Family

ID=22217197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20014/59A Expired GB893522A (en) 1958-07-18 1959-06-11 Improvements in and relating to the production of metal oxide powders

Country Status (1)

Country Link
GB (1) GB893522A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5089248A (en) * 1990-05-14 1992-02-18 Masud Akhtar Production of metallic oxides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5089248A (en) * 1990-05-14 1992-02-18 Masud Akhtar Production of metallic oxides

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