Properties of Calcium Phosphate Powder Synthesized from Calcium Chloride and Potassium Pyrophosphateстатья
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Дата последнего поиска статьи во внешних источниках: 4 марта 2022 г.
Аннотация:The powder of hydrated calcium pyrophosphate Ca2P2O7 ⋅ xH2O containing potassium chlorideKCl as a by-product was synthesized at room temperature from 0.5 M aqueous solutions of calcium chloride CaCl2 and potassium pyrophosphate K4P2O7 at a ratio of Ca/P = 1. The particle size of the powder with a shape close to isometric was 100–200 nm after synthesis and 0.5–1.0 μm after heat treatment at 700°C. Upon heating, KCl was retained in the powder up to 600°C, participating in the formation of new phases: potassium/calcium double pyrophosphate K2CaP2O7 and chlorapatite Ca3(PO4)3Cl in the range of 500–700°C and then K-substituted tricalcium phosphate Ca10K(PO4)7 at 800°C. The hydrated calcium pyrophosphate powder containing KCl as a by-product can be recommended for the manufacture of biocompatible multiphase ceramic materials, and the powder after heat treatment at 800°C can be used to obtain biocompatible materials using chemical bonding reactions.Keywords: potassium pyrophosphate, calcium chloride, calcium pyrophosphate, potassium chloride, synthesis, heterophase reaction, potassium/calcium double pyrophosphate, calcium chlorapatite, potassium-substituted tricalcium phosphate