Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 78: Issue 3
Temperatures and kinetics of anatase to rutile transformation in doped TiO2 heated in microwave field
Authors:
S. Borkar The Institute of Science Department of Chemistry 15, Madam Cama Road Mumbai 400032 India

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S. Dharwadkar The Institute of Science Department of Chemistry 15, Madam Cama Road Mumbai 400032 India

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Pages:
761–767
Online Publication Date:
13 Jan 2005
Publication Date:
01 Dec 2004
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-004-0443-2
Keywords:
TiO2; activation energy; microwave processing; anatase - rutile phase transformation
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Abstract  

The influence of aliovalent ions such as Mn, Cr, Fe, Mo, and V on the temperature and kinetics of anatase to rutile phase transformation in TiO2 heated in microwave field was studied in this work. The results indicated that heat treatment method and dopants considerably affected the anatase-to-rutile phase transition temperature and kinetics of transformation. The activation energy for anatase to rutile transformation of TiO2 derived from the isothermal data was found to be 328.4 kJ mol-1, which was considerably reduced by the addition of dopants in TiO2 matrix. The activation energy for Mo, Mn and V doped samples was 252.0, 101.3 and 96.4 kJ mol-1, respectively.

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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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