Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 44: Issue 2
Synthesis of lead metaniobate by thermal decomposition of a coprecipitation product
Authors:
L. Marta Technical University (formerly Polytechnic Institute) Chemistry Laboratory, Department of Materials Science Cluj-Napoca Romania Cluj-Napoca Romania

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,
M. Zaharescu Roumanian Academy Institute of Physical Chemistry Bucharest Romania Bucharest Romania

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, and
I. Haiduc Babes-Bolyai University Chemistry Department Cluj-Napoca Romania Cluj-Napoca Romania

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Pages:
431–440
Online Publication Date:
06 Jul 2007
Publication Date:
01 Feb 1995
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02636133
Keywords:
oxygen-containing niobium compounds; lead metaniobate; TG and DTA; X-ray
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Abstract  

The paper reports a new, nonconventional method for the preparation of oxygen-containing niobium compounds, based upon coprecipitation. The coprecipitation product of niobic acid with lead oxalate was used as precursor. Lead metaniobate was obtained by proper thermal treatment of the coprecipitate. The coprecipitate mechanism was studied and the optimal conditions for quantitative precipitation of niobium and lead were established. The mechanism of thermal decomposition of the coprecipitate was investigated by differential thermal analysis and X-ray powder diagrams. The final product of thermal decomposition, lead metaniobate, is formed at 850C.

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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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