The promoting effect of boron oxide on the FeOx/Si3N4 catalyst for oxidative dehydrogenation of ethylbenzene

Here, we report a visible promotion effect of the B2O3 additive on FeOx/Si3N4 catalysts in the oxidative dehydrogenation of ethylbenzene. The oxygen reactivity of FeOx was alleviated by the strong interaction between FeOx and BOx species, which suppresses the overoxidation of ethylbenzene and styrene to carbon oxides, thus promoting styrene selectivity.