Magnetic FeO@SiO-Pt and FeO@SiO-Pt@SiO Structures for HDN of Indole.

The effect of a second porous SiO shell in the activity and selectivity of the FeO@SiO-Pt catalyst in the hydrodenitrogenation of indole is reported. The double FeO@SiO-Pt@SiO structure was prepared by coating FeO nanoparticles with tetraethyl orthosilicate (TEOS) with a further impregnation of 1.0 wt.