Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 44: Issue 6
Study of kinetics of thermal decomposition of uranyl nitrate complexes with N-alkylcaprolactams by means of non-isothermal gravimetry
Authors:
Z. Lu Suzhou University Central Laboratory 215006 Suzhou, Jiangsu P. R. China

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L. Yang Suzhou University Central Laboratory 215006 Suzhou, Jiangsu P. R. China

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J. Sun Suzhou University Central Laboratory 215006 Suzhou, Jiangsu P. R. China

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Pages:
1391–1399
Online Publication Date:
09 Jan 2007
Publication Date:
01 Jun 1995
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02549227
Keywords:
complexes; kinetics; uranyl nitrate
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Abstract  

The kinetics of thermal decomposition of a series of uranyl nitrate complexes with N-alkylcaprolactams (alkyl=C2H5, C4H9, C6H13, C8H17, C10H21 or C12H25) was studied by means of non-isothermal gravimetry under a nitrogen atmosphere. From the TG-DTG curves, the kinetic parameters relating to the loss of two molecules of coordinated ligand were obtained by employing two groups of methods: (I) a group of conventional methods involving the Coast-Redfern, Freeman-Carroll, Horowitz-Metzger, Dharwadkar-Karkhanavala and Doyle (modified by Zsakó) equations; (II) a new method were suggested by J. Máleket al.. The results obtained using two types of methods were compared, and it emerged that the results of method II were much more meaningful and reasonable in this work. Additionally, the effects of the molecular structure of the ligands on the kinetic data and models were studied and are discussed.

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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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