Water → Tricalcium Phosphate

HRID 886650

Reaktionsgleichung

Reaktionsgleichung von HRID 886650
O.O.O.O.[N+]([O-])([O-])=[O:6].[Ca+2:9].[N+]([O-])([O-])=O.[O:14]=[P:15]12[O:26]P3(OP(OP(O3)([O:22]1)=O)(=O)[O:16]2)=O.O>C(O)C>[P:15]([O-:26])([O-:22])([O-:16])=[O:14].[Ca+2:9].[Ca+2:9].[Ca+2:9].[P:15]([O-:26])([O-:22])([O-:16])=[O:14].[O-2:6].[Ca+2:9]

Komponenten

6

Edukt 3

HCID 962WaterHCID 14812Phosphorus oxide (P4O10)HCID 16211656Calcium nitrate tetrahydrate

Produkt 2

HCID 24456Tricalcium PhosphateHCID 6850728Calciumoxide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel2×

Versuchsvorschrift

117.56 g of Calcium Nitrate tetra hydrate was dissolved in 250 ml of ethanol similarly 21.28 g of phosphorous pentoxide was dissolved in 250 ml of ethanol. The resulting solutions were mixed on complete dissolution of the salts and fed to an oil burner for combustion. The flue gases were directed into a stainless steel vessel containing water. After burning a powdered material was recovered form the water dried overnight at 100° C. and submitted for XRD (X-Ray Diffraction) analysis. The resulting XRD pattern is given in FIG. 3 and can be compared with that of the NIST standard HAP shown in FIG. 2. As indicated the burning of the ethanol solution having a molar Calcium to Phosphorous ratio of 1.67 resulted in the formation of HAP without further high temperature processing but peaks characteristic of TriCalcium Phosphate (TCP) and Calcium Oxide (CaO) are observed in the diffraction pattern.

Aufarbeitung

  1. additionThe resulting solutions were mixed on complete dissolution of the salts
  2. customThe flue gases were directed into a stainless steel vessel
  3. customwas recovered form the water
  4. customdried overnight at 100° C.

Quellen und Nachweise

ORD-Eintrag
ord-da559fdc895a450b83fb2cfd76cb1ae1
Quelldatensatz
uspto-grants-2012_08
Patentnummer
US08246924B2

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