Use of (NH4)4fNi(OH)6Mo6O_(18)·nH2O Heteropoly Compound in Fabrication of Sulfide Catalysts for Hydropurification of Diesel Fractions

摘要

NiMo(S)/γ-Al2O3 hydropurification catalysts were synthesized using as a precursor the active sulfide phase of a heteropoly compound with Anderson structure, ammonium 6-molybdonickelate, and, for comparison, ammonium paramolybdate. The heteropoly compound synthesized was identified using X-ray phase analysis and IR spectroscopy and its thermal stability was analyzed with DTA. The hydrodesulfurizing and hydrogenating activity of catalysts synthesized from ammonium 6-molybdonickelate was examined in hydropurification of two diesel fractions with different contents of polycyclic aromatic hydrocarbons and close contents of sulfur.