Non-isothermal pyrolysis and kinetics of oil shales

Date

1999-01-01

Author

Kök, Mustafa Verşan

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In this research, non-isothermal pyrolysis behavior and kinetics of three oil shales were studied by thermal analysis methods. All the thermal effects were endothermic and no exothermic region was observed in DSC curves. When oil shales are heated in nitrogen atmosphere in TG/DTG, two different mechanisms causing loss of mass were observed. The region between ambient temperature and 500 K was distillation. The second mechanism was visbreaking and cracking and it was observed between the region 500 and 800 K. Kinetic parameters of all the samples are determined by Coats and Redfern method and the results are discussed with regard to their accuracy and the ease of interpretation.

URI

https://hdl.handle.net/11511/35800

Journal

Journal of Thermal Analysis and Calorimetry

DOI

https://doi.org/10.1023/a:1010107701483

Collections

Department of Petroleum and Natural Gas Engineering, Article

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Thermal characterization of different origin class-G cements Kök, Mustafa Verşan (2014-02-01) In this study, thermal characteristics and kinetics of three different origin class-G cements (Mix, Bolu, and Nuh) were studied using thermogravimetry (TG/DTG) and differential scanning calorimeter (DSC). In DSC curves at different heating rates a number of peaks were observed consistently in different temperature intervals. TG/DTG is used to identify the detected phases and the corresponding mass loss. In the dehydration kinetic study of the different origin class-G cement samples, three different methods ...

Citation Formats

M. V. Kök, “Non-isothermal pyrolysis and kinetics of oil shales,” Journal of Thermal Analysis and Calorimetry, pp. 953–958, 1999, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35800.