Fig. 3: Mass spectrometric analysis of the sodium neodymium fluoride samples performed in quasi-multiple ion detection (QMID) mode.
From: Rare earth metals production using alternative feedstock that eliminates HF
a There are two peaks in the NNF-A sample corresponding to water at 220 °C and 400 °C, b The NNF-C has a sharp peak at ~100 °C and two less prominent peaks at 300 °C and 400 °C, and c The NNF-N has a sharp peak at ~100 °C and another prominent peak at 470 °C. All three fluorides did not exhibit the evolution of any hydrogen fluoride. NNF-A sample synthesized using the acetate precursor, NNF-C sample synthesized using the chloride precursor, NNF-N sample synthesized using the nitrate precursor.
