Time-Series Analysis for Kinetic Interpretation of Catalytic Cracking of 1-Octene with a Model Involving Dominant Reactions

Tsutomu Nakazato; Kiyoshiro Umeo; Takami Kai; Toshio Tsutsui

doi:10.4028/www.scientific.net/AMM.625.315

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Time-Series Analysis for Kinetic Interpretation of Catalytic Cracking of 1-Octene with a Model Involving Dominant Reactions

Abstract:

A time-series analysis of dominant reactions is proposed for kinetic interpretation of catalytic cracking of an olefin hydrocarbon with carbon number C₈. The analysis considered four dominant reaction groups: cracking, skeletal isomerization, cyclization and hydrogen transfer. The kinetic parameters of normal, mono-, di-and tri-branched hydrocarbons as well as naphthenes were determined so as to follow the tendency of the experimental data. The analysis revealed that the reaction rate of isomer cracking was faster than that of linear hydrocarbon one, suggesting that the cracking product was produced dominantly via isomerization rather than direct cracking of linear hydrocarbons. These results implied that the conditions suitable for suppressing over-cracking and prevailing skeletal isomerization lie in the range of lower temperature.