Pd/Pt supported on pure and doped TiO2 (TiO2–WO3 and TiO2–WO3–SiO2) were prepared and characterized by different techniques (XPS, TEM, XRD, H2-TPR and TPD of ammonia). These catalysts were investigated in the hydrogenation of tetralin at 6.0 MPa, checking also their thio-tolerance by feeding increasing amounts of dibenzothiophene (DBT, 300 and 1000 wt ppm). The catalytic activity followed the order: Pd/Pt–TiO2 > Pd/Pt–TiO2–WO3–SiO2 > Pd/Pt–TiO2–WO3, evidencing a negative role of a second oxide inside TiO2. The Pd/Pt–TiO2 catalyst showed high activity regardless of reaction conditions (temperature, contact time, H2/tetralin ratio) together with a good thio-tolerance up to 300 wt ppm of DBT.
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Albertazzi, S., Barbieri, C., Infantes-Molina, A. et al. Pd/Pt on Ti-containing Mixed Oxides as Dearomatization Catalysts: Physico-chemical Characterization and Activity. Catal Lett 104, 29–37 (2005). https://doi.org/10.1007/s10562-005-7432-3
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DOI: https://doi.org/10.1007/s10562-005-7432-3