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Type: Artigo de evento
Title: Formation Of Oxysulfide Lno 2s 2 And Oxysulfate Lno 2so 4 Phases In The Thermal Decomposition Process Of Lanthanide Sulfonates (ln = La, Sm)
Author: MacHado L.C.
De Azeredo M.T.D.
Correa H.P.S.
Do Rosario Matos J.
Mazali I.O.
Abstract: This study investigates two lanthanide compounds (La 3+ and Sm 3+) obtained in water/ethyl alcohol solutions employing the anionic surfactant diphenyl-4-amine sulfonate (DAS) as ligand. Both sulfonates were characterized through IR, TG/DTG (O 2 and N 2). The thermal treatment of both compounds at 1273 K under air leaves residues containing variable percentages of lanthanide oxysulfide/oxysulfate phases shown by synchrotron high-resolution XRD pattern including the Rietveld analysis. The phase distributions found in the residues evidence the differences in the relative stability of the precursors. © 2011 Akadémiai Kiadó, Budapest, Hungary.
Rights: fechado
Identifier DOI: 10.1007/s10973-011-1451-7
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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