Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 87: Issue 2
Thermo-programmed reduction study of Pt/WOx–ZrO2 materials by thermogravimetry
Authors:
A. M. Garrido Pedrosa Department of Chemistry, Federal University, Natal-RN, Brazil, 59078-970, CP 1692

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M. J. B. Souza Department of Chemical Engineering, Federal University of Sergipe, São Cristovão-SE, Brazil, 49100-000

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D. M. A. Melo Department of Chemistry, Federal University, Natal-RN, Brazil, 59078-970, CP 1692

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A. S. Araujo Department of Chemistry, Federal University, Natal-RN, Brazil, 59078-970, CP 1692

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Pages:
351–355
Online Publication Date:
29 May 2006
Publication Date:
01 Jan 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-005-7432-y
Keywords:
TG and DTA analysis; thermo-programmed reduction; Pt/WOx–ZrO2 materials
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Abstract

The thermo-programmed reduction study of Pt/WOx–ZrO2 materials prepared with different tungsten loading were performed by thermogravimetry. The samples were synthesized by impregnation method and calcined at 600, 700 and 800°C. The characterizations of both un-calcined and calcined materials were carried out using different techniques: thermal analysis (TG and DTA), X-ray diffraction (XRD) and thermo-programmed reduction (TPR). TG and DTA analysis of un-calcined were used to determination of calcination temperatures of the samples. XRD diffractograms were useful to help us in the determination of phase presents. TPR profiles showed between three and four events at different temperatures attributed to platinum reduction and the different stages of tungsten specie reduction.

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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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