GB1121278A - A process for the production of ultra-finely divided oxides - Google Patents

A process for the production of ultra-finely divided oxides

Info

Publication number
GB1121278A
GB1121278A GB3225965A GB3225965A GB1121278A GB 1121278 A GB1121278 A GB 1121278A GB 3225965 A GB3225965 A GB 3225965A GB 3225965 A GB3225965 A GB 3225965A GB 1121278 A GB1121278 A GB 1121278A
Authority
GB
United Kingdom
Prior art keywords
ultra
production
finely divided
divided oxides
reaction zone
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
GB3225965A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB1121278A publication Critical patent/GB1121278A/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
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Abstract

A process as claimed in claim 1 of the parent Specification 1,121,279, wherein part of the waste gases accumulating after the reaction is returned, after separation of the solid oxide, to the reaction zone as the gas which is inert to combustion. The waste gases may be recycled to the reaction zone before or after passage through a hydrohalic acid absorption system. When hydrogen is used as the flammable gas an excess of 19% may be used in the process in order to combine with the atmospheric oxygen entering the system through leaks.
GB3225965A 1964-08-01 1965-07-28 A process for the production of ultra-finely divided oxides Expired GB1121278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964D0045091 DE1244125B (en) 1964-08-01 1964-08-01 Process for the production of finely divided oxides

Publications (1)

Publication Number Publication Date
GB1121278A true GB1121278A (en) 1968-07-24

Family

ID=7048764

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3225965A Expired GB1121278A (en) 1964-08-01 1965-07-28 A process for the production of ultra-finely divided oxides

Country Status (2)

Country Link
DE (1) DE1244125B (en)
GB (1) GB1121278A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923182A1 (en) * 1979-06-08 1980-12-18 Degussa METHOD FOR THE PYROGENIC PRODUCTION OF FINE-PARTICLE OXIDE OF A MATAL AND / OR A METALOID

Also Published As

Publication number Publication date
DE1244125B (en) 1967-07-13

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