METHOD FOR PRODUCTION OF FINE SINGLE-PHASE HYDROXYL-APATITE

FIELD: industrial inorganic synthesis. SUBSTANCE: invention relates to preparation of pure calcium phosphate salts and can be used in sorbent and catalyst production. Method of invention involves synthesis of calcium phosphate from aqueous suspension of calcium carbonate or hydroxide and phosphoric...

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Bibliographic Details
Main Authors LONGINOVA N.M, LIPOCHKIN S.V, KOZYREVA N.A, MIKHAJLICHENKO A.I
Format Patent
LanguageEnglish
Published 10.04.2000
Edition7
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:FIELD: industrial inorganic synthesis. SUBSTANCE: invention relates to preparation of pure calcium phosphate salts and can be used in sorbent and catalyst production. Method of invention involves synthesis of calcium phosphate from aqueous suspension of calcium carbonate or hydroxide and phosphoric acid solution at their molar ratio (0.4-0.7):1 and temperature 20-50 C followed by adding potassium or sodium hydroxide aqueous solution to pH 10-12, separating product, washing, and drying at temperature not exceeding 60 C. EFFECT: improved purity of product. 5 ex
Bibliography:Application Number: RU19990113485