Hdl Handle:
http://hdl.handle.net/10149/95133
Title:
Thermal analysis studies of oil shale residual carbon
Authors:
Barkia, H.; Belkbir, L.; Jayaweera, S. A. A. (Shanath)
Affiliation:
University of Teesside. School of Science and Technology.
Citation:
Barkia, H., Belkbir, L. and Jayaweera, S. A. A. (2004) 'Thermal analysis studies of oil shale residual carbon', Journal of Thermal Analysis and Calorimetry, 76 (2), pp.615-622.
Publisher:
Springer Verlag
Journal:
Journal of Thermal Analysis and Calorimetry
Issue Date:
May-2004
URI:
http://hdl.handle.net/10149/95133
DOI:
10.1023/B:JTAN.0000028040.16844.40
Abstract:
Thermal analysis has been used to determine the impact of heating on the decomposition reaction of two Moroccan oil shales between ambient temperature and 500°C. During pyrolysis of raw oil shale, the residual organic matter (residual carbon) obtained for both shales depends on the heating rate (5 to 40°C min-1). Three stages characterize the overall process: the concentration of carbonaceous residue decreases with increase of heating rate, become stable around 12°C min-1 and continue to decrease at higher heating rates. Activation energies were determined using the Coats-Redfern method. Results show a change in the reaction mechanism at around 350°C. Below this temperature, the activation energy was 41.3 kJ mol-1 for the decomposition of Timahdit, and 40.5 kJ mol-1 for Tarfaya shale. Above this temperature the respective values are 64.3 and 61.3 kJ mol-1. The reactivity of Timahdit and Tarfaya oil shale residual carbon prepared at 12°C min-1 was subject to a dynamic air atmosphere to determine their thermal behaviour. Residual carbon obtained from Tarfaya oil shale is shown to be more reactive than that obtained from Timahdit oil shale.
Type:
Article
Language:
en
Keywords:
oil shale; thermogravimetry; pyrolysis; kinetic; combustion; carbon; gasification
ISSN:
1388-6150
Rights:
Author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 29/03/2010]
Citation Count:
8 [Scopus, 29/03/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorBarkia, H.en
dc.contributor.authorBelkbir, L.en
dc.contributor.authorJayaweera, S. A. A. (Shanath)en
dc.date.accessioned2010-03-29T09:10:48Z-
dc.date.available2010-03-29T09:10:48Z-
dc.date.issued2004-05-
dc.identifier.citationJournal of Thermal Analysis and Calorimetry; 76 (2): 615-622en
dc.identifier.issn1388-6150-
dc.identifier.doi10.1023/B:JTAN.0000028040.16844.40-
dc.identifier.urihttp://hdl.handle.net/10149/95133-
dc.description.abstractThermal analysis has been used to determine the impact of heating on the decomposition reaction of two Moroccan oil shales between ambient temperature and 500°C. During pyrolysis of raw oil shale, the residual organic matter (residual carbon) obtained for both shales depends on the heating rate (5 to 40°C min-1). Three stages characterize the overall process: the concentration of carbonaceous residue decreases with increase of heating rate, become stable around 12°C min-1 and continue to decrease at higher heating rates. Activation energies were determined using the Coats-Redfern method. Results show a change in the reaction mechanism at around 350°C. Below this temperature, the activation energy was 41.3 kJ mol-1 for the decomposition of Timahdit, and 40.5 kJ mol-1 for Tarfaya shale. Above this temperature the respective values are 64.3 and 61.3 kJ mol-1. The reactivity of Timahdit and Tarfaya oil shale residual carbon prepared at 12°C min-1 was subject to a dynamic air atmosphere to determine their thermal behaviour. Residual carbon obtained from Tarfaya oil shale is shown to be more reactive than that obtained from Timahdit oil shale.en
dc.language.isoenen
dc.publisherSpringer Verlagen
dc.rightsAuthor can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 29/03/2010]en
dc.subjectoil shaleen
dc.subjectthermogravimetryen
dc.subjectpyrolysisen
dc.subjectkineticen
dc.subjectcombustionen
dc.subjectcarbonen
dc.subjectgasificationen
dc.titleThermal analysis studies of oil shale residual carbonen
dc.typeArticleen
dc.contributor.departmentUniversity of Teesside. School of Science and Technology.en
dc.identifier.journalJournal of Thermal Analysis and Calorimetryen
ref.citationcount8 [Scopus, 29/03/2010]en
or.citation.harvardBarkia, H., Belkbir, L. and Jayaweera, S. A. A. (2004) 'Thermal analysis studies of oil shale residual carbon', Journal of Thermal Analysis and Calorimetry, 76 (2), pp.615-622.-
All Items in TeesRep are protected by copyright, with all rights reserved, unless otherwise indicated.