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Autoxidation for pre-refining of oil sands Open Access


Other title
Type of item
Degree grantor
University of Alberta
Author or creator
Javadli, Rashad
Supervisor and department
De Klerk, Arno (Chemical and Materials Engineering)
Examining committee member and department
Dechaine, Greg (Chemical and Materials Engineering)
Veinot, Jonathan (Chemistry)
Thundat, Thomas (Chemical and Materials Engineering)
Chemical and Materials Engineering Department

Date accepted
Graduation date
Master of Science
Degree level
Oxidative desulfurization of oil sands bitumen as pre-refining methodology to improve bitumen quality in the absence of catalysts was studied. It has potential advantages such as employing a cheap reagent (air) and moderate processing conditions (<180 °C, autogenous pressure). The specific aims of our research were: (a) To establish whether autoxidation followed by aqueous extraction is able to efficiently desulfurize bitumen; (b) To establish whether autoxidation conducted in the presence of a diluent is necessary to limit bitumen hardening as a result of free radical addition reactions; (c) To establish whether autoxidation is selective enough toward organosulfur compounds, because it is undesirable to cause extensive hydrocarbon oxidation; and (d) To establish whether autoxidation reactions are more efficient < 150 °C or in the temperature range 150-180 °C, which reportedly results in selective autoxidation. These questions were addressed and best sulphur removal obtained was 46-47 %.
License granted by Rashad Javadli ( on 2011-08-29 (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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