Hydrogen-desorbing behavior of the hydrides in 15 rare earth elements measured by temperature swing column chromatography

In addition, the first peaks had two types, sharp one and broad one. The first peaks of Y and heavy rare earth Tb-Lu showed sharp one and those of light rare earth La, Ce, Pr, Nd showed broad one. Sm, Eu and Gd showed complex hydrogen-desorbing behavior. Molar ratio of the first bonding hydrogen atom dissociated at low-temperature zone to the second bonding hydrogen atom dissociated at high-temperature zone was approximately 1-2.