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The bulk and supported Ni 2 P catalysts (Ni 2 P/γ-Al 2 O 3  and Ni 2 P/MCM-41) were facile prepared by using nickel metal as nickel source via thermal treatment of hypophosphite in a separated reactor. The thermal decomposition behaviors of sodium hypophosphite were studied by online mass spectra. The effects of atmosphere, temperature, reaction time, and P/Ni atomic ratio on the as-prepared Ni 2 P catalysts were investigated. The Ni 2 P catalysts can also be obtained by using NiCl 2  as nickel source but not for NiO. Since the nickel source is nickel metal and Ni 2 P catalysts were prepared in a separated reactor, the as-prepared Ni 2 P catalysts from Ni 0  can be directly used without further purification, but the as-synthesized Ni 2 P catalyst from NiCl 2  source should be further treated to remove the residues (such as Cl – ) before use. As the active species for hydrodenitrogenation (HDN), Ni 2 P shows much higher activity than Ni 0 . For hydrodearomatization (HDA), Ni 2 P/MCM-41 shows much lower activity than Ni/MCM-41 but much better resistance to S-containing compounds in hydrogenation of naphthalene. The mechanism for synthesizing Ni 2 P catalysts with this facile method is proposed by online mass spectra.

A Facile Method to Synthesize Ni 2 P Catalysts and their Catalytic Performances in Hydrotreating Reactions