GB1207860A - Process and apparatus for preparing metal oxides - Google Patents

Process and apparatus for preparing metal oxides

Info

Publication number
GB1207860A
GB1207860A GB5441867A GB5441867A GB1207860A GB 1207860 A GB1207860 A GB 1207860A GB 5441867 A GB5441867 A GB 5441867A GB 5441867 A GB5441867 A GB 5441867A GB 1207860 A GB1207860 A GB 1207860A
Authority
GB
United Kingdom
Prior art keywords
halide
oxidation
reactor
metal oxides
preparing 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
Application number
GB5441867A
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.)
Societa Italiana Resine SpA SIR
Original Assignee
Societa Italiana Resine SpA SIR
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 Societa Italiana Resine SpA SIR filed Critical Societa Italiana Resine SpA SIR
Publication of GB1207860A publication Critical patent/GB1207860A/en
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
    • C01B33/181—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
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/20—Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state
    • C01B13/22—Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state of halides or oxyhalides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • C01G23/07—Producing by vapour phase processes, e.g. halide oxidation

Abstract

1,207,860. Halide oxidation. SOC. ITALIANA RESINE S.p.A. 29 Nov., 1967 [14 Dec., 1966], No. 54418/67. Headings C1A and C1N. In a process for preparing a metal or Si oxide by vapour phase oxidation of the corresponding halide with O 2 , the reactants are fed into the reactor at a linear velocity of 10-100 m/sec. in the form of two separate annular conical jets having an angle of intersection of 50-110 degrees. CO may be burnt with excess O 2 in a combustion chamber situated above the reactor, thereby preheating the O 2 to a temperature, e.g. 1300-1800‹ C., at least 500‹ C. higher than that of the halide, which may be preheated to 300-500‹ C. The velocity of the halide may be equal to or lower than that of the O 2 . The streams may have a thickness of 0À1-1 cm., and either reactant may form the outer stream. Examples describe the oxidation of TiCl 4 containing 1% AlCl 3 or 0À5% SiCl 4 . Reference is also made to halides of Zr, Si, Al, Zn, Cr and Fe.
GB5441867A 1966-12-14 1967-11-29 Process and apparatus for preparing metal oxides Expired GB1207860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3107366 1966-12-14

Publications (1)

Publication Number Publication Date
GB1207860A true GB1207860A (en) 1970-10-07

Family

ID=11233054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5441867A Expired GB1207860A (en) 1966-12-14 1967-11-29 Process and apparatus for preparing metal oxides

Country Status (2)

Country Link
GB (1) GB1207860A (en)
NL (1) NL6716928A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1256550A1 (en) * 2000-02-04 2002-11-13 Showa Denko K.K. Ultrafine mixed-crystal oxide particles, process for producing the same, and use
WO2007127232A2 (en) * 2006-04-28 2007-11-08 Cabot Corporation Process for the production of fumed silica
US7410690B2 (en) 2000-02-04 2008-08-12 Showda Denko K.K. Ultrafine mixed-crystal oxide, production process and use thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632313A (en) * 1969-04-17 1972-01-04 Du Pont Method of heating oxygen-containing gases for the production of titanium dioxide pigment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1256550A1 (en) * 2000-02-04 2002-11-13 Showa Denko K.K. Ultrafine mixed-crystal oxide particles, process for producing the same, and use
EP1256550A4 (en) * 2000-02-04 2006-08-23 Showa Denko Kk Ultrafine mixed-crystal oxide particles, process for producing the same, and use
US7410690B2 (en) 2000-02-04 2008-08-12 Showda Denko K.K. Ultrafine mixed-crystal oxide, production process and use thereof
WO2007127232A2 (en) * 2006-04-28 2007-11-08 Cabot Corporation Process for the production of fumed silica
WO2007127232A3 (en) * 2006-04-28 2009-10-01 Cabot Corporation Process for the production of fumed silica
US7910081B2 (en) 2006-04-28 2011-03-22 Cabot Corporation Process for the production of fumed silica

Also Published As

Publication number Publication date
NL6716928A (en) 1968-06-17

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee