THERMOANALYTICAL STUDIES ON SAMARIUM SULFITE SULFATE HYDRATE

Authors
LESKELA T LESKELA M NIINISTO L
Citation
T. Leskela et al., THERMOANALYTICAL STUDIES ON SAMARIUM SULFITE SULFATE HYDRATE, Thermochimica acta, 256(1), 1995, pp. 67-73
Citations number
12
Categorie Soggetti
Chemistry Analytical
Journal title
Thermochimica acta → ACNP
ISSN journal
00406031
Volume
256
Issue
1
Year of publication
1995
Pages
67 - 73
Database
ISI
SICI code
0040-6031(1995)256:1<67:TSOSSS>2.0.ZU;2-V
Abstract
A prolonged crystallization of samarium sulfite solution at 70 degrees C yields a disulfite sulfate hydrate precipitate Sm-2(SO3)(2)SO4 . nH (2)O, where it is approximate to 2.5. The solid phase was characterize d by X-ray powder diffraction, thermal analysis (TG, DTG and DTA) and IR spectroscopy. TG measurements revealed dehydration at 150-300 degre es C and then a complex decomposition between 300 and 900 degrees C le ading in both air and argon to oxosulfate Sm2O2SO4.