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P. Melnikov Department of Clinical Surgery, School of Medicine, Federal University of Mato Grosso do Sul, Caixa Postal 549, Campo Grande, Mato Grosso do Sul, Brazil

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R. V. Gonçalves Physics Institute, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue, 9500, P.O. Box 15051, 91501-970, Porto Alegre, Brazil

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H. Wender Physics Institute, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue, 9500, P.O. Box 15051, 91501-970, Porto Alegre, Brazil

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Abstract

Sb(VO3)3 has been synthesized by interaction between NH4VO3 and Sb2O3. The compound crystallizes in monoclinic system with lattice parameters: a = 17.150; b = 15.940; c = 14.600 Å and angle β = 90.50°. The scanning electronic microscopy shows thin flat plates measuring ~20 μm along with detritus material. The synthesis was simulated by thermal analysis and the final product identified by X-ray diffraction. Thermal analyses of the ternary system xNH4VO3 + (1 − x)(NH4)2HPO4 + Sb2O3 lead to the formation of Sb(VO3)3 and SbPO4 at 500 °C. At high temperature (900 °C), SbVO4, SbOPO4, VO and SbP5O14 are formed. The data of thermal analysis match with the composition of intermediate and final products. No solid solutions containing simultaneously PO4−3 and VO4−3 ions have been found.

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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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