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Calcium pyrophosphate (Ca2P2O7) → Tricalcium Phosphate

HRID 983364
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 983364
O.O.[P:3]([O-:7])([O-:6])([O-:5])=[O:4].[Ca+2:8].[Ca+2].C1C2[C@@H]3C=C[C@H](C2C=C1)C3.[N+]([O-])([O-])=O.[Ca+2].[N+]([O-])([O-])=O.[O-:29][P:30]([O:33]P([O-])([O-])=O)(=[O:32])[O-:31].[Ca+2].[Ca+2]>OP([O-])([O-])=O.OP([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[Mg+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Fe+2]>[P:3]([O-:7])([O-:6])([O-:5])=[O:4].[Ca+2:8].[P:30]([O-:33])([O-:32])([O-:31])=[O:29].[Ca+2:8].[Ca+2:8]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 24632Calcium pyrophosphate (Ca2P2O7)HCID 24963Calcium nitrateHCID 15618652endo-Dicyclopentadiene2×HCID 21862903Dicalcium phosphate-dihydrate

Produkt 1

HCID 24456Tricalcium Phosphate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 56841624
Whitlockite
Katalysator

Reaktionsbedingungen

Temperatur
500 °C

Versuchsvorschrift

Example 1 was repeated with the addition of 10.00 g dicalcium phosphate dihydrate, DCPD, CaHPO4.2H2O (Aldrich Chemical Co., Inc. #30,765-3, CAS #7789-77-7) to the homogeneous solution following endothermic dissolution of the calcium nitrate salt. The DCPD was present both as suspended solids and as precipitated material (no agitation used). Warming of the sample to >25° C. initiated an exothermic reaction as described in Example 1, resulting in the formation of a white, pasty solid. Heat treatment and X-ray diffraction of this solid were conducted as described in Example 1. Following heat treatment in air at 500° C. for 1 hour, XRD indicated the solid to be composed of whitlockite as the primary phase along with calcium pyrophosphate (Ca2P2O7) as the secondary phase.

Aufarbeitung

  1. customas precipitated material (no agitation
  2. temperatureWarming of the sample to >25° C.
  3. customan exothermic reaction
  4. customresulting in the formation of a white, pasty solid
  5. temperatureHeat treatment and X-ray diffraction of this solid

Quellen und Nachweise

ORD-Eintrag
ord-ad6d58ab98fc47d1aad45128db1f9b85
Quelldatensatz
uspto-grants-2005_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06863899B2

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