Kinetic Studies for the Transformation Process of beta-Whitlockite in Hydroxyapatite

Journal article

Authors/Editors

Agachi, Paul

Research Areas

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Publication Details

Author list: Dejeu VR, Barabas R, Pop A, Bogya ES, Agachi PS

Publisher: Central de Documentare Al Industriei Chimice Ri

Place: BUCHAREST

Publication year: 2009

Journal acronym: REV CHIM-BUCHAREST

Volume number: 60

Issue number: 12

Start page: 1251

End page: 1253

Number of pages: 3

ISSN: 0034-7752

Languages: English-Great Britain (EN-GB)

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Abstract

In the paper are presented the results of the kinetic study for the transformation of beta-whitlockite in hydroxyapatite (HAP). It has been showed the influence of pH and temperature over the rate of the process. The values for the rate constants and activation energy at pH = 8.5 - 12 were determined. The obtained values for the activation energies show that the process of transformation of beta-whitlockite in HAP could be described using a combined macrokinetic mechanism: transfer - mass transformation.

Keywords

Crystallization, hydroxyapatite, macrokinetic mechanism

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