GB1328115A - Manufacture of goethite - Google Patents

Manufacture of goethite

Info

Publication number
GB1328115A
GB1328115A GB4356670A GB4356670A GB1328115A GB 1328115 A GB1328115 A GB 1328115A GB 4356670 A GB4356670 A GB 4356670A GB 4356670 A GB4356670 A GB 4356670A GB 1328115 A GB1328115 A GB 1328115A
Authority
GB
United Kingdom
Prior art keywords
alpha
ferric oxide
oxide hydrate
sept
ferrous
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
GB4356670A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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
Priority claimed from FR6931392A external-priority patent/FR2060215A1/en
Priority claimed from FR6932741A external-priority patent/FR2060273A1/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1328115A publication Critical patent/GB1328115A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide (Fe2O3)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • C01P2006/42—Magnetic properties

Abstract

1328115 Alpha-ferric oxide hydrate EASTMAN KODAK CO 11 Sept 1970 [16 Sept 1969 25 Sept 1969] 43566/70 Heading C1A Acicular alpha-ferric oxide hydrate (α- FeO.OH) in the form of fine crystals is prepared by precipitating ferrous hydroxide at below 60‹ C. by pouring, under non-oxidizing conditions, a solution of a ferrous salt into a solution of an alkali metal hydroxide used in a stoichometric excess, then oxidizing at not more than 60‹ C. the so-formed ferrous hydroxide into alpha-ferric oxide hydrate, then boiling the mixture, the precipitation being performed under conditions avoiding local excesses of ferrous salt, the amount of water being maintained to ensure in the final dispersion of the alpha-ferric oxide hydrate a concentration thereof below 15 gms./lt. The alkali metal hydroxide may be NaOH or KOH and the ferrous salt may be FeSO 4 .7H 2 O or FeCl 2 . 4H 2 O. The oxidation may be performed by blowing oxygen through the dispersion.
GB4356670A 1969-09-16 1970-09-11 Manufacture of goethite Expired GB1328115A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR6931392A FR2060215A1 (en) 1969-09-16 1969-09-16 Acicular goethite for mfe of gamma ferric - oxide
FR6932741A FR2060273A1 (en) 1969-09-25 1969-09-25 Acicular iron oxide prodn

Publications (1)

Publication Number Publication Date
GB1328115A true GB1328115A (en) 1973-08-30

Family

ID=26215272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4356670A Expired GB1328115A (en) 1969-09-16 1970-09-11 Manufacture of goethite

Country Status (1)

Country Link
GB (1) GB1328115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045246A1 (en) * 1980-07-24 1982-02-03 EASTMAN KODAK COMPANY (a New Jersey corporation) Process for preparing acicular iron oxide particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045246A1 (en) * 1980-07-24 1982-02-03 EASTMAN KODAK COMPANY (a New Jersey corporation) Process for preparing acicular iron oxide particles

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee