Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 75: Issue 2
Thermal study of CoxZn7-xSb2O12 spinel obtained by pechini method using different alcohols
Authors:
D. Gouveia Universidade Federal da Paraíba LTM, Departamento de Química, CCEN 58059-900 Joăo Pessoa Paraíba Brazil 58059-900 Joăo Pessoa Paraíba Brazil

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R. Rosenhaim Universidade Federal da Paraíba LTM, Departamento de Química, CCEN 58059-900 Joăo Pessoa Paraíba Brazil 58059-900 Joăo Pessoa Paraíba Brazil

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M. de Maurera Universidade Federal da Paraíba LTM, Departamento de Química, CCEN 58059-900 Joăo Pessoa Paraíba Brazil 58059-900 Joăo Pessoa Paraíba Brazil

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S. Lima Universidade Federal da Paraíba LSR, Departamento de Engenharia Mecânica, CT 58059-900 Joăo Pessoa Paraíba Brazil 58059-900 Joăo Pessoa Paraíba Brazil

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C. Paskocimas Universidade Federal de Săo Carlos LIEC, Departamento de Química, CCT Rodovia Washington Luis, Km 235 13565-905 Săo Carlos Săo Paulo Brazil Rodovia Washington Luis, Km 235 13565-905 Săo Carlos Săo Paulo Brazil

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E. Longo Universidade Federal de Săo Carlos LIEC, Departamento de Química, CCT Rodovia Washington Luis, Km 235 13565-905 Săo Carlos Săo Paulo Brazil Rodovia Washington Luis, Km 235 13565-905 Săo Carlos Săo Paulo Brazil

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A. Souza Universidade Federal da Paraíba LTM, Departamento de Química, CCEN 58059-900 Joăo Pessoa Paraíba Brazil 58059-900 Joăo Pessoa Paraíba Brazil

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I. Santos Universidade Federal da Paraíba LTM, Departamento de Química, CCEN 58059-900 Joăo Pessoa Paraíba Brazil 58059-900 Joăo Pessoa Paraíba Brazil

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Pages:
453–460
Online Publication Date:
02 Nov 2004
Publication Date:
01 Feb 2004
Article Category:
Research Article
DOI:
https://doi.org/10.1023/b:jtan.0000027132.98057.ac
Keywords:
DTA; thermogravimetry; spinel; Pechini
Restricted access

Abstract  

With the aim of obtaining materials with applications in pigments, CoxZn7-xSb2O12 spinels were synthesized using the Pechini method. This method consists in the formation of a polymeric net, where the metallic cations are homogeneously distributed. In this work, two types of alcohol (ethyl glycol and ethylene glycol) were used for the synthesis of a zinc antimoniate spinel, CoxZn7-xSb2O12 (x=0-7). The materials were characterized by termogravimetry (TG) and differential thermal analysis (DTA). TG results indicated a decrease in total mass loss when cobalt was added to the solution substituting zinc, for samples prepared using the two different alcohols. Decomposition temperatures, obtained by TG and DTA, presented a decreasing behavior as cobalt was added to the material. In relation to the alcohols, all results indicated a better polymerization of the resin when ethylene glycol was used, being the most indicated one for cation immobilization. X-ray diffraction did not show differences between the two alcohols - both presented the spinel phase (Co, Zn)2.33Sb0.67O4. Samples with higher quantity of cobalt also presented ilmenite phase (Co, Zn)Sb2O6.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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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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