Promotion effects with dispersed catalysts for residue slurry hydroconversion
作者： Thanh S. Nguyen , Melaz Tayakout-Fayolle , Maxime Lacroix , Delphine Gotteland , Mimoun Aouine
DOI: 10.1016/J.FUEL.2015.07.012
关键词:
摘要: Abstract Hydroconversion of an atmospheric residue (AR) was performed in autoclave with Mo, Ni, V compounds applied as precursors the dispersed sulfide catalysts. The reaction conducted at 450 °C, residence time 1 h and catalyst concentration range 300–900 ppm. AR conversions were compared for carried out presence sole metals mixtures two metals. By mixing Ni Mo precursor salts together, improvement total conversion hydrodesulfurization (HDS) degree observed, indicating on a significant synergy between sulfides. contrast, case mixture activity just sum contributions from respective With support provides by high resolution microscopy (HRTEM) core-hole X-ray absorption spectroscopy (XAS) it concluded that mixed Ni–Mo catalyst, MoS 2 slabs deposited surface 3 S crystallites, providing reverse synergistic effect.
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