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Mauro da Silva Universidade de São Paulo Instituto de Química CP 26077 Sao Paulo SP 05513-970 Brazil

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Flávio de Souza Carvalho Universidade de São Paulo Instituto de Geociências Sao Paulo SP Brazil

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Tereza da Silva Martins Universidade Federal de São Paulo Departamento de Ciências Exatas e da Terra Sao Paulo SP Brazil

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Márcia de Abreu Fantini Universidade de São Paulo Departamento de Física Aplicada, Instituto de Física Sao Paulo SP Brazil

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Paulo Isolani Universidade de São Paulo Instituto de Química CP 26077 Sao Paulo SP 05513-970 Brazil

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Abstract

Two series of lanthanide oxides with different morphologies were synthesized through calcinations of two types of citrate polymeric precursors. These oxides were characterized by XRD patterns, SEM electronic microscopy, and N2 adsorption isotherms. SEM microscopy analysis showed that the calcination of crystalline fibrous precursors [Ln2(LH)3·2H2O] (L = citrate) originated fibrous shaped particles. On the other hand, the calcination of irregular shaped particles of precursors [LnL·xH2O] originated irregular shaped particles of oxide, pointing out a morphological template effect of precursors on the formation of the respective oxides.

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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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