Reactivity of CO2 during thermal cracking of heavy paraffins under supercritical conditions

Date

1997-11-01

Author

Karakaş, Gürkan
Doğu, Timur

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Thermal cracking of n-hexadecane was investigated in a temperature range of 450-600 degrees C in the presence of CO2. Effects of pressure and temperature on product distribution were experimentally determined under both subcritical and supercritical conditions. At 1.2 MPa and with a CO2 to n-C-16 mole ratio of 25, C-6-C-14 olefins, C-10-C-17 paraffins, and C-5-C-10 fatty acids were identified in the liquid product. Experiments conducted at 4.5 MPa (supercritical) yielded higher selectivities for fatty acids and paraffins. The product distribution of fatty acids and olefins was found to be very sensitive to pressure and temperature. It was also concluded that heterogeneous carbon formation on the reactor surface was inhibited by the supercritical phase.

Subject Keywords

Normal-hexadecane, Steam cracking, Carbon-dioxide, Liquid-phase, N-hexadecane

URI

https://hdl.handle.net/11511/31163

Journal

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

DOI

https://doi.org/10.1021/ie970128y

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

G. Karakaş and T. Doğu, “Reactivity of CO2 during thermal cracking of heavy paraffins under supercritical conditions,” INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, pp. 4445–4451, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31163.