Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 94: Issue 1
Thermal investigation of strontium acetate hemihydrate in nitrogen gas
Authors:
Y. Duan Wuhan University College of Chemistry and Molecular Science Wuhan 430072 China

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J. Li Wuhan University College of Chemistry and Molecular Science Wuhan 430072 China

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X. Yang Wuhan University College of Chemistry and Molecular Science Wuhan 430072 China

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X. Cao Wuhan University College of Chemistry and Molecular Science Wuhan 430072 China

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L. Hu Wuhan University College of Chemistry and Molecular Science Wuhan 430072 China

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Z. Wang Wuhan University College of Chemistry and Molecular Science Wuhan 430072 China

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Y. Liu

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C. Wang Wuhan University College of Chemistry and Molecular Science Wuhan 430072 China

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Pages:
169–174
Online Publication Date:
15 Aug 2008
Publication Date:
01 Oct 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8711-6
Keywords:
master plots method; model-free isoconversional method; strontium acetate hemihydrate; TG-FTIR; thermal decomposition
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Abstract  

The thermal decomposition of strontium acetate hemihydrate has been studied by TG-DTA/DSC and TG coupled with Fourier transform infrared spectroscopy (FTIR) under non-isothermal conditions in nitrogen gas from ambient temperature to 600°C. The TG-DTA/DSC experiments indicate the decomposition goes mainly through two steps: the dehydration and the subsequent decomposition of anhydrous strontium acetate into strontium carbonate. TG-FTIR analysis of the evolved products from the non-oxidative thermal degradation indicates mainly the release of water, acetone and carbon dioxide. The model-free isoconversional methods are employed to calculate the Ea of both steps at different conversion α from 0.1 to 0.9 with increment of 0.05. The relative constant apparent Ea values during dehydration (0.5<α<0.9) of strontium acetate hemihydrate and decomposition of anhydrous strontium acetate (0.5<α<0.9) suggest that the simplex reactions involved in the corresponding thermal events. The most probable kinetic models during dehydration and decomposition have been estimated by means of the master plots method.

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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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