Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 92: Issue 3
Thermal transformations of lead oxides
Authors:
K. Gavrichev Kurnakov Institute of General and Inorganic Chemistry Leninsky prospect, 31 Moscow 119991 Russia

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A. Bolshakov Kurnakov Institute of General and Inorganic Chemistry Leninsky prospect, 31 Moscow 119991 Russia

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D. Kondakov Kurnakov Institute of General and Inorganic Chemistry Leninsky prospect, 31 Moscow 119991 Russia

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A. Khoroshilov Kurnakov Institute of General and Inorganic Chemistry Leninsky prospect, 31 Moscow 119991 Russia

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S. Denisov Ural Electrochemical Integrated Plant Novoural’sk Sverdlovsk region Russia

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Pages:
857–863
Online Publication Date:
02 Jul 2008
Publication Date:
01 Jun 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8590-x
Keywords:
lead oxide; nanoparticles; phase transition; thermal properties
Restricted access

Abstract  

Differential scanning calorimetry, differential thermogravimetry, X-ray analysis and electronic microscopic studies of thermal transformations of PbO2 were carried out. Formation of fine dispersed (less than 100 nm) particles of α-PbO was observed at PbO2 thermal decomposition at heating to 580°C. Reverse reaction of Pb3O4 formation from PbO was found at cooling and annealing at 400°C in air. At heating of α-PbO to 650°C the particle growth to 1 μm with formation of β-PbO took place. Thermal decomposition with formation of β-PbO particles with size from 0.3 to 1 μm at PbO2 heating to 650°C was observed. Transition from PbO to Pb3O4 at cooling of sample heated to 650°C was not detected. Interpretation of observed phenomena from the point of view of particle size influences on the shift of α-PbO↔β-PbO phase transition temperature and on the chemical activity of phases are presented.

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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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