Open AccessCrystallisation of a highly metastable hydrated calcium pyrophosphate phase
Author(s) -
Pierre Gras,
Sébastien Teychené,
Christian Rey,
Cédric Charvillat,
Béatrice Biscans,
Stéphanie Sarda,
Christèle Combes
Publication year - 2012
Publication title -
crystengcomm
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.813
H-Index - 132
ISSN - 1466-8033
DOI - 10.1039/c2ce26499d
Subject(s) - phase (matter) , thermogravimetric analysis , monoclinic crystal system , pyrophosphate , crystallization , metastability , materials science , calcium pyrophosphate , fourier transform infrared spectroscopy , powder diffraction , chemical engineering , chemistry , scanning electron microscope , calcium , crystallography , organic chemistry , crystal structure , enzyme , engineering , composite material
International audienceA 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
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom