Calcium pyrophosphate (Ca2P2O7) → Tricalcium Phosphate

HRID 989560

반응식

HRID 989560 반응식
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]

참가 물질

6

반응물 4

HCID 24632Calcium pyrophosphate (Ca2P2O7)HCID 24963Calcium nitrateHCID 15618652endo-Dicyclopentadiene2회HCID 21862903Dicalcium phosphate-dihydrate

생성물 1

HCID 24456Tricalcium Phosphate

시약·촉매·용매 1

HCID 56841624Whitlockite촉매

반응 조건

온도
500 °C

실험 절차

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.

후처리

  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

출처 및 근거

ORD 기록
ord-b80a1c54b00442ef9e8d5fa0d4abfda0
출처 데이터셋
uspto-grants-2002_10
특허 번호
US06458162B1

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