Reaction calorimetry and structural crystal properties of non-ideal binary rhabdophane solid solutions (Ce1-xREExPO4·nH2O)

Room temperature reaction calorimetric experiments that were used to measure the enthalpy of precipitation of rhabdophane (Ce1-xREExPO4·nH2O; REE= La, Pr, Nd, Sm, Eu, and Gd). The solids were characterized using X-ray diffraction, scanning electron microscopy, Raman spectroscopy, and the role of water in the rhabdophane structure was further determined using thermogravimetric analysis coupled with differential scanning calorimetry. Data are from the ODCM Laboratory, New Mexico Bureau of Geology and Mineral Resources, New Mexico Tech.