Phosphoric Acid → Tricalcium Phosphate

HRID 342330

Reaktionsgleichung

Reaktionsgleichung von HRID 342330
[OH-].[Ca+2:2].[OH-].[N+]([O-])([O-])=O.[Ca+2].[N+]([O-])([O-])=O.[P:13](=[O:17])([OH:16])([OH:15])[OH:14].[P:18]([O-:22])([O-:21])([O-:20])=[O:19].[NH4+].[NH4+].[NH4+]>[OH-].[NH4+]>[P:13]([O-:17])([O-:16])([O-:15])=[O:14].[Ca+2:2].[P:18]([O-:22])([O-:21])([O-:20])=[O:19].[Ca+2:2].[Ca+2:2]

Komponenten

6

Edukt 4

HCID 1004Phosphoric AcidHCID 24963Calcium nitrateHCID 159282Ammonium phosphate, tribasicHCID 6093208Calcium Hydroxide

Produkt 1

HCID 24456Tricalcium Phosphate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 14923Ammonium HydroxideLösungsmittel2×

Versuchsvorschrift

The present invention also provides methods of synthesizing hydroxyapatite granules having homogenous cellular structures. A slurry of hydroxyapatite is prepared by dissolving calcium hydroxide or calcium nitrate in a saturated ammonium hydroxide solution. The ammonium hydroxide solution is pH 11 or greater. Phosphoric acid or ammonium phosphate is then added to this solution, preferably in a dropwise manner to produce a calcium-phosphate ratio of approximately 1.5 to 1.7.

Quellen und Nachweise

ORD-Eintrag
ord-4bd97c0aacd54f1f9594a011cc816784
Quelldatensatz
uspto-grants-1999_01
Patentnummer
US05858318

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