Focusing on the proposed oligomerization, isomerization, cracking, and coking pathways, the reaction energies and reaction barriers predicted by the cluster model were compared with the results of periodic DFT and NEB-Lanczos TS characterizations using the slab model. The kinetic relevance of three reaction cycles, which determine the selectivity of producing various gaseous products and coke precursors, were compared using potential energy diagrams (Fig. ):