Abstract
A series of spinel oxides AB2-xB'xO4/γ-Al2O3 (A: Ni, Cu; B: Cr; B': Fe and x = 0, 0.5, 1, 1.5, 2) were synthesized by two methods: solid-state reaction and coprecipitation. The oxides obtained were characterized by XRD, SEM and BET to determinate their textural and structural properties. Their catalytic activity was evaluated by reaction of oxidative dehydrogenation of ethylbenzene to styrene. The XRD showed the spinel phase formed for all oxides synthesized by two methods. However, the coprecipitation method seems to be more favorable for formation of spinel phase. All samples showed a high catalytic activity and selectivity for oxidative dehydrogenation of ethylbenzene to styrene, especially, in the case of NiCr2-xFexO4 obtained by coprecipitation method. [DOI: 10.1380/ejssnt.2012.263]
