65415-70-5Relevant academic research and scientific papers
Hydrothermal synthesis, crystal structure, and luminescence of lanthanide(III) coordination polymers with tetrafluorosuccinate and 1,10-phenanthroline
Li, Xia,Zhang, Yan-Bin,Zou, Ying-Quan
, p. 277 - 283 (2009)
Three new coordination polymers [Nd2(TFSA)3(phen)2]n (1) and {[Ln(TFSA)(phen)(H2O)4]·0.5(TFSA)·2(phen) H2O}n (Ln = Sm, 2 and Dy, 3; TFSA = tetrafluorosuccinate; phen =
Solution enthalpies of hydrates LnCl3·xH2O (Ln=Ce-Lu)
Seifert,Funke
, p. 1 - 7 (2008/10/09)
Trichlorides of the lanthanide elements Ln=Ce-Lu form: (a) isotypic hexahydrates LnCl3·6H2O with a coordination number (CN) 8 for the Ln3+ ions. (b) Two isotypic groups of trihydrates LnCl3·3H2O, in the first group Ln=Ce-Dy the CN is 8; the structure of the second group Ln=Er-Lu is unknown. With Ho no trihydrate exists; a dihydrate is formed. (c) Two isotypic groups of monohydrates LnCl3·H2O with unknown structure - Ln=Ce-Dy and Ln=Ho-Lu. For all compounds and for anhydrous chlorides LnCl3 solution enthalpies were measured with an isoperibolic calorimeter. The ΔsolH0 values do not depend only on the difference (lattice enthalpies/hydration enthalpies), but also on the state in solution. According to Spedding the CN of the Ln3+ ions against water changes from 9 to 8 between Nd and Sm, causing minima in the series of solution enthalpies. Dihydrates LnCl3·2H2O are found for Ln=Ce, Pr, Nd, Sm and presumably for Eu and Gd. They are not yet well characterised.
Investigation of the kinetics of the fluidized bed process for the dehydration of NdCl3·6H2O, TbCl3·6H2O and DyCl3·6H2O
Sundstroem, Johan,Van Hong, Vu
, p. 13 - 21 (2008/10/09)
Dehydration of NdCl3·6H2O, TbCl3·6H2O and DyCl3·6H2O was carried out by fluidization in a gas mixture of Ar and HCl. In a series of isothermal experiments the effect of different process parameters was considered. Water vapour pressure of gas leaving the fluidized bed was estimated by using a simple mass balance. It was shown that the rate-limiting step of the overall dehydration process in the fluidized bed is removal of water vapour by a saturated bulk gas flow. However, the saturated gas phase data could not be thermodynamically interpreted. The reason to this is discussed.
