The use of Hi-Res TGA, TG-FTIR, HT-DRIFT and HT-XRD in the study of the decomposition of La2(C2O4)3·10H2O

Using a combination of various techniques, more intermediate products could be detected during the thermal decomposition of La2(C2O4)3·10H2O than from conventional TGA measurements. In this way a more complete and detailed decomposition mechanism is proposed. Direct identification of the intermediate phases with HT-DRIFT revealed the presence of another oxycarbonate La2O(CO3)2, while with Hi-Res TGA a thermally unstable intermediate La2(CO3)3 was detected. All this information is consistent with the data obtained from TG-FTIR spectroscopic measurements.