Single-Event Kinetic Modeling of Olefin Cracking on ZSM-5: Proof of Feed Independence

Abstract

One of the crucial advantages of single-event kinetic models is the possibility of extrapolating them to other reaction conditions, which is highly interesting for catalyst design. However, no publication exists that proves the theoretically derived feature of single-event parameters being applicable to different olefins as feed though derived from kinetic experiments with only one certain feed olefin. Therefore, this work provides evidence that a single-event kinetic model for 1-pentene cracking on ZSM-5 is able to reproduce experimental results from the literature with different olefins as feed as long as a consistent set of thermodynamic data is used. The model predicts product distributions from two different kinetic studies of olefin cracking on ZSM-5 with high accuracy at all temperatures (400–490 °C), at all feed partial pressures (47.6–131 mbar), for all olefins as reactant (C3–C7), and for both water-containing and water-free feeds. The calculations for arbitrary olefin mixtures as feed also show...