Mechanism of HDN over Mo and Nb−Mo carbide catalysts

Comparison of the hydrodenitrogenation rate of a series of isomeric amines was performed over Mo2C, NbC, NbMo2−O−C and MoS2/SiO2 catalysts. It is shown that the reaction occurs mainly through an elimination mechanism and that the order of reactivity does not correlate with the surface acidity of the catalysts.