SBA-15 modified with Al,Ti, or Zr as supports for highly active NiW catalysts for HDS |
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Authors: | Lilia Y Lizama Tatiana E Klimova |
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Affiliation: | 1.Facultad de Química,Universidad Nacional Autónoma de México,México,México |
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Abstract: | A series of SBA-15-type materials modified with Al, Ti, and Zr were prepared and used as supports for hydrodesulfurization
(HDS) catalysts based on NiW. Prepared supports and catalysts were characterized by N2 physisorption, small- and wide-angle XRD, UV–Vis DRS, FT-IR, IEP, TPR, TPD, HRTEM, and SEM–EDX. Sulfided catalysts were evaluated
in HDS of dibenzothiophene (DBT). Catalytic activity tests show that the creation of defined anchoring points for the W species
by modifying the surface of SBA-15 with Al, Ti, and Zr results in a considerable improvement in catalysts’ performance compared
to pure SBA-supported analog. The possible reasons for this behavior are discussed. |
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