Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 105: Issue 2
Thermooxidative decomposition of oil shales
Authors:
Tiit Kaljuvee Laboratory of Inorganic Materials, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia

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Merli Keelmann Laboratory of Inorganic Materials, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia

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Andres Trikkel Laboratory of Inorganic Materials, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia

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Rein Kuusik Laboratory of Inorganic Materials, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia

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Pages:
395–403
Online Publication Date:
18 Sep 2010
Publication Date:
01 Aug 2011
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-010-1033-0
Keywords:
Kinetics; Oil shale; Semicoke; TG–DTA–FTIR; Thermooxidative decomposition
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Abstract

The thermooxidative decomposition of four oil shale samples from Estonia, Jordan, Israel and Morocco and one sample of Estonian oil shale derivative, semicoke, was studied with the aim to determine the characteristics of the process and the differences of it related to the origin of oil shale. The experiments with a Setaram Setsys 1750 thermoanalyzer coupled to a Nicolet 380 FTIR Spectrometer were carried out under non-isothermal conditions up to 1000 °C at the heating rates of 1, 2, 5, 10 and 20 °C min−1 in an oxidizing atmosphere. A model-free kinetic analysis approach based on the differential isoconversional method of Friedman was used to calculate the kinetic parameters. The results of TG–DTA–FTIR analyses and the variation of activation energy E along the reaction progress α indicated the complex character of thermooxidative decomposition of oil shale and semicoke, being at that the most complicated for Estonian and Jordanian oil shale characterized by higher content of organic matter as compared to the other samples studied.

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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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