Kinetics and Selectivity of Cyclohexane Pyrolysis

Abstract:

Pyrolysis of cyclohexane was conducted with a plug-flow tube reactor at 873 K. The data of feed conversion fit first-order kinetics adequately, giving the apparent rate constant of 0.0092 s^-1 . A chain mechanism of free radical reactions is proposed to interpret consumption of cyclohexane by four processes: homolysis of C-C bond (Path I) and homolysis of C-H bond (Path II ) in reaction chain initiation, H-abstraction of various radicals from feed molecule in reaction chain propagation (Path III ), and the process associated with coke formation (Path IV). The reaction path probability ratio of X _I：X _II：X _III ：X _IV was 0.5420: 0.0045 : 0.3897 : 0.0638.

• Periodical: Advanced Materials Research (Volumes 455-456)
• Pages: 540-548
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.455-456.540
• Online since: January 2012
• Authors: Sheng Jian Zhang, Ying Xian Zhao
• Keywords: Cyclohexane, Kinetic, Mechanism, Pyrolysis

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