Synthesis of Monetite from Calcium Hydroxyapatite and Monocalcium Phosphate Monohydrate under Mechanical Activation Conditions

Abstract

A powder of monetite СаНРО₄ with a particle size of 100–300 nm was synthesized from monocalcium phosphate monohydrate Ca(H₂PO₄)₂ ⋅ H₂O and calcium hydroxyapatite Ca₁₀(PO₄)₆(OH)₂ in an acetone medium upon mechanical activation in a planetary mill. According to X-ray powder diffraction data, after heat treatment in the range 900–1100°С, the phase composition of the samples was represented by calcium β-pyrophosphate β-Ca₂P₂O₇. The synthesized powder can be used for producing resorbable calcium phosphate ceramic materials.