Thermochimica Acta, Vol.399, No.1-2, 241-244, 2003
Low temperature heat capacity and thermodynamic standard values at 298.15 of beta-eucryptite (LiAlSiO4)
We report measurements of the heat capacity of the one-dimensional ionic conductor beta-eucryptite (LixAlxSi1-2xO4) over the temperature range 1.5-320 K. The entropy and enthalpy at 298.15 K were found to be Sdegrees(298.15) = (105.34+/-0.7) J/mol K and Hdegrees(298.15) = (21406.5+/-8) J/mol. The data are compared with specific heat results, reported in the literature for different temperature ranges.