Abstract
Sulfided conventional transition metals Co, Ni, Mo, and W and noble metals Rh, Pd, Ir, Pt, and Re deposited over conventional support γ-Al2O3 (SBET = 262 m2g−1), and unconventional supports TiO2 (anatase, SBET = 140 m2g−1) and ZrO2 (baddeleyite, SBET = 108 m2g−1) were studied in the parallel hydrodesulfurization of 1-benzothiophene (HDS) and hydrogenation of 1-methyl-cyclohex-1-ene (o-HYD) at 360 °C and 1.6 MPa. Mo, W, Co, and Ni sulfided catalysts exhibited relatively low activity in both HDS and o-HYD. For these sulfides, the TiO2 and ZrO2 support effect relative to γ-Al2O3 varied by the factor 0.4–9.3. In contrast, the supported sulfides of Rh, Re, Pd, Pt, and Ir were highly active in HDS with low TiO2 and ZrO2 support effect relative to γ-Al2O3 (Rh/ZrO2 being an exception). Rh, Re, and Pd sulfided species exhibited relatively low activities in o-HYD reaction while Ir and Pt species exhibited high activities in o-HYD. The reference industrial bimetallic CoMo and NiMo Al2O3 supported catalysts exhibited desirable high HDS but low o-HYD activities.
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