Calcium pyrophosphate (Ca2P2O7) → Tricalcium Phosphate

HRID 1064216

反応式

HRID 1064216 の反応式
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]

参加物

6

反応物 4

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

生成物 1

HCID 24456Tricalcium Phosphate

試薬・触媒・溶媒 1

HCID 56841624Whitlockite触媒

反応条件

温度
500 °C

実験手順

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.

後処理

  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

出典と根拠

ORDレコード
ord-b289627c381046d18b8692193f8ae518
出典データセット
uspto-grants-2005_11
特許番号
US06969501B2

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