Combustion kinetics of ( 210C149), ( 149C88) and ( 88) m particle size Göynük oil shale was investigated under non-isothermal conditions with a heating rate of 5, 10, and 20 K/min in the 298-1,173 K temperature interval under air atmosphere. The combustion characteristics of the samples were analyzed using thermogravimetric/differential thermogravimetric curves. Differential thermogravimetric data were analyzed by two different models and apparent activation energies of the samples were determined. Minimum activation energy was obtained as 1.8 kJ/mol with 20 K/min in ( 88) m.
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