The difference between intramolecular and intermolecular isotope effects indicates that the incorporation/exchange of aromatics is not much faster than the irreversible step after CH cracking
The difference between the isotope effects within and between molecules suggests that the binding/exchange of aromatics is no faster than the irreversible steps after CH cracking.
The differences between intramolecular and intermolecular isotopic effects indicate that the binding / exchange of aromatics is not much faster than the irreversible step after Ch cracking