Catalysis Communications (Jan 2021)

Dibenzothiophene hydrodesulfurization over ternary metallic NiMoW/Ti-HMS mesoporous catalysts

  • R. Huirache-Acuña,
  • E. Pérez-Ayala,
  • M.E. Cervantes-Gaxiola,
  • G. Alonso-Nuñez,
  • T.A. Zepeda,
  • E.M. Rivera-Muñoz,
  • B. Pawelec

Journal volume & issue
Vol. 148
p. 106162

Abstract

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Ternary sulfided NiMoW/Ti-HMS solids with varying Si/Ti ratio (e.g., 20, 40, 60) and with Ti incorporated via a post-synthesis method were evaluated in the hydrodesulfurization of dibenzothiophene. Ti-incorporation improved the catalytic activity of the samples up to 2.4 times compared to the sample without titanium and to a reference industrial catalyst. The performance was mainly associated with differences observed in the stacking and length and the dispersion of the active phase, this effect being stronger for the NiMoW/HMS-Ti 20 sample. The latter displayed the highest catalytic activity and sulfur removal via hydrogenation.

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