Numéro
J. Phys. IV France
Volume 04, Numéro C2, Février 1994
European Workshop on Piezoelectric Materials : Crystal Growth, Properties and Prospects
Page(s) C2-47 - C2-51
DOI http://dx.doi.org/10.1051/jp4:1994206
European Workshop on Piezoelectric Materials : Crystal Growth, Properties and Prospects

J. Phys. IV France 04 (1994) C2-47-C2-51

DOI: 10.1051/jp4:1994206

Crystal growth of Li salts from aqueous solutions and gels studied by Raman spectroscopy

F. RULL1, M. PRIETO2 and F. SOBRON3

1  Dpto. de Cristalografía y Mineralogía, Facultad de Ciencias, Prado de la Magdalena s/n, 47005 Valladolid, Spain
2  Dpto. de Geología, Facultad de Geológicas, Arias de Velasco s/n, 33005 Oviedo, Spain
3  Dpto. de Ingeniería Química, Facultad de Ciencias, Prado de la Magdalena s/n, 47005 Valladolid, Spain


Abstract
A Raman spectroscopic study of aqueous solutions of Li2SO4, LiNaSO4 and LiKSO4 as function of concentration and temperature has been performed. From a band profile analysis of the internal modes of the sulphate ion, the spectroscopic association constant has been calculated at different temperatures. It has been also possible to measure the diffusivity coefficients for Li2SO4 in bulk solutions and in gels, using Raman spectroscopy. These data are used in the interpretation of the crystallization behaviour of Li salts from aqueous solutions and gels.



© EDP Sciences 1994