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Crystallisation of a highly metastable hydrated calcium pyrophosphate phase

Gras, Pierre and Teychené, Sébastien and Rey, Christian and Charvillat, Cédric and Biscans, Béatrice and Sarda, Stéphanie and Combes, Christèle Crystallisation of a highly metastable hydrated calcium pyrophosphate phase. (2013) CrystEngComm, 15 (12). 2294-2300. ISSN 1466-8033

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Official URL: http://dx.doi.org/10.1039/C2CE26499D


A simple and fast synthesis method was set up to obtain pure hydrated calcium pyrophosphate (CPP)phases of biological interest. This work focused on a specific phase synthesised at 25 uC and pH 4.5 in a stirred tank reactor. Powder X-ray diffraction, FTIR spectroscopy, scanning electron microscopy and thermogravimetric analyses revealed that the phase is unknown but presents similarities with a monoclinic tetrahydrated CPP phase (Ca2P2O7?4H2O, m-CPPT b phase) synthesised under the same conditions of pH and temperature. Characterisation of the unreferenced phase (u-CPP) has been performed, especially to better identify its composition, structure and stability, as well as its possible relation to the m-CPPT b phase or to other hydrated CPP phases.

Item Type:Article
Additional Information:Thanks to the Royal Society of Chemistry. The definitive version is available at http://pubs.rsc.org/en/content/articlepdf/2013/ce/c2ce26499d
HAL Id:hal-00917720
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:04 Oct 2013 13:01

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