Authors:
Luiz Carlos Machado Laboratório de Produção de Novos Materiais, Departamento de Química, UFES, Av. Fernando Ferrari, 574, Vitória, ES, 29075-910, Brazil

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Marcos Tadeu D’Orlando de Azeredo Laboratório de Física Aplicada, Departamento de Física, UFES, Av. Fernando Ferrari, 574, Vitória, ES, 29075-910, Brazil

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Hamilton Perez Soares Corrêa Laboratório de Cátalise e Cerâmicas Avançadas, UFMS, Campo Grande, Brazil

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Jivaldo do Rosário Matos Laboratório de Análise Térmica Prof. Ivo Giolito, Instituto de Química, USP, Av. Prof. Lineu Prestes 748, Bloco 8T, São Paulo, SP, 05508-000, Brazil

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Ítalo Odone Mazali Laboratório de Química do Estado Sólido, Instituto de Química, Unicamp, 6154, Campinas, SP, 13084-971, Brazil

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Abstract

This study investigates two lanthanide compounds (La3+ and Sm3+) 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 (O2 and N2). 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.

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  • 2. Machida, M, Kawano, T, Eto, M, Zhang, D, Ikeue, K. Ln dependence of the large-capacity oxygen storage/release property of Ln oxysulfate/oxysulfide systems. Chem Mater. 2007;19:954960. .

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  • 10. Machado, LC, Marins, AAL, Muri, EJB, Biondo, A, Matos, JdoR, Mazali, IO. Complexation of the Fe(III) and Fe(II) sulphates with diphenyl-4-amine barium sulphonate (DAS): Synthesis, thermogravimetric and spectroscopic studies. J Therm Anal Calorim. 2009;97:289296. .

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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