“…It was suggested that the observed reduction peaks, as well as their position could be related to the different Ni 2þ coordination in the spinel framework. Furthermore, they concluded that as the contribution of the b-peak in the total Ni species present in the spinel structure of NiAl 2 O 4 -CD was lower (27%) than that of NiAl 2 O 4 -CP (51%), the Ni 2þ ions occupying octahedral sites were more prone to reduction than the tetrahedral ones, as in the case of our 8NiAl-edf catalyst Thus, such results strongly support that the reforming efficiency is highly dependent on the type of interaction of the Ni active phase with the carrier [38,81,82].…”