Calcium Carbonate → Tricalcium Phosphate
Reaction equation
[OH:1][P:2]([O-:5])([O-:4])=[O:3].[Ca+2:6].C(=O)([O-])[O-].[Ca+2]>>[O-:3][P:2]([O-:5])([O-:4])=[O:1].[O-:3][P:2]([O-:5])([O-:4])=[O:1].[Ca+2:6].[Ca+2:6].[Ca+2:6]Participants
3
Procedure
β-Tricalcium phosphate was prepared by heating a mixture of dicalcium phosphate anhydrous (DCPA, Baker) and calcium carbonate (CC, Merck) in a molar ratio of 2:1 up to 1050° C. for 24 h, followed by quenching to room temperature. The sintered cake was crushed with pestle and mortar and sieved until it passed through a 355 μm sieve. The material was ground in a ball mill to a medium particle size d50 of 9.8 μm. Monocalcium phosphate monohydrate with a medium particle size d50 of 23.3 μm was purchased from Baker and used as received. Both materials were mixed in equimolar amounts in a coffee grinder for approximately 20-30 s.
Workup
- temperatureby heating
- customby quenching to room temperature
- customThe sintered cake was crushed with pestle and mortar
- filtrationsieved until it
- additionBoth materials were mixed in equimolar amounts in a coffee grinder for approximately 20-30 s
Sources & evidence
- ORD record
- ord-ae11ff9adcc248839e170914fca522bf
- Source dataset
- uspto-grants-2009_01
- Patent number
- US07473312B2
Reaction notes
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