Abstract
Supported nickel phosphides were prepared by treating an amorphous Ni–B alloy on silica–alumina support with phosphine (15 vol.% PH 3/H 2) at relatively low temperature. The amorphous Ni–B/SiO 2–Al 2O 3 precursors were synthesized by silver-induced electroless plating. The amorphous precursors and catalysts were characterized by X-ray diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, BET surface area and inductively coupled plasma measurements. The transmission electron micrographs of the Ni 2P/SiO 2–Al 2O 3 particles with their size ranging from 60 to 80 nm showed that they were homogeneously dispersed over the SiO 2–Al 2O 3 support. The as-prepared catalysts exhibited an excellent catalytic activity in the hydrodesulfurization (HDS) of dibenzothiophene.
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