Intrinsic kinetics of low-temperature oxidation of oil shale kerogen |
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| Affiliation: | 1. Department of Fuels Engineering, University of Utah, Salt Lake City, UT 84112-1183, USA;2. Department of Metallurgy and Metallurgical Engineering, University of Utah, Salt Lake City, UT 84112-1183, USA;1. Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Yangtze University, Jingzhou 434023, Hubei, China;2. School of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China;3. School of Computer Science, Yangtze University, Jingzhou 434023, Hubei, China;4. School of Earth Environment and Water Resource, Yangtze University, Wuhan Campus, 430100 Hubei, China;1. University of North Dakota, USA;2. NIOC, Iran;1. Department of Chemical Engineering, Monash University, Victoria 3800, Australia;2. Shanghai Boiler Works Co Ltd, 250 Huaning Road, Minhang, Shanghai 200245, China |
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| Abstract: | The kinetics of oxidation of kerogen in the Colorado oil shale were measured using a thermogravimetric analysis technique in a continuously increasing temperature mode. The rate data were analysed based on the assumption that, at the relatively low temperatures at which the kinetics were measured, the oxidation reaction takes place on the surface of solid kerogen and that the decomposition of kerogen is not significant. The oxidation rate was determined to be of first order with respect to oxygen partial pressure. The activation energy of reaction was 11.0 ± 2.3 kJ mol−1, and the pre-exponential factor was (6.8 ± 2.5) × 10−6 m(kPa · s)−1. |
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