Add time:09/07/2019 Source:sciencedirect.com
A prolonged crystallization of samarium sulfite solution at 70°C yields a disulfite sulfate hydrate precipitate Sm2(SO3)2SO4 · nH2O, where n is ≈ 2.5. The solid phase was characterized by X-ray powder diffraction, thermal analysis (TG, DTG and DTA) and IR spectroscopy. TG measurements revealed dehydration at 150–300°C and then a complex decomposition between 300 and 900°C leading in both air and argon to oxosulfate Sm2O2SO4.
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