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Mechanism of Substitution in Carbonated Apatites (1983)

Driessens, F. C. M. ; Verbeeck, R. M. H. ; Kiekens, P.

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 504 (1983), S. 195-200

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ISSN: 0044-2313

Keywords: Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Single-phase AB-type carbonate apatites were prepared by sintering appropriate mixtures of CaHPO4 and CaCO3 at 870°C in a CO2 atmosphere with a partial water vapor pressure of 5 mm Hg. Chemical and physical analyses indicate that at a constant CO32-/OH- ratio in the hydroxyl sublattice, carbonate substitutes for phosphate on a 1:1 mole basis. For every three PO43- ions substituted, two vacancies in the Ca2+ sublattice and one in the OH- sublattice are created. The same substitution mechanism seems to apply in pure B-type carbonate apatite.

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/zaac.19835040925

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