Effect of the hydrogen spillover on the selectivity of dibenzothiophene hydrodesulfurization over CoSx/γ-Al2O3, NiSx/γ-Al2O3 and MoS2/γ-Al2O3 catalysts |
| |
| Authors: | N. Escalona, R. Garcí a, G. Lagos, C. Navarrete, P. Baeza,F.J. Gil-Llambí as |
| |
| Affiliation: | aUniversidad de Concepción, Facultad de Ciencias Químicas, Casilla 160c, Concepción, Chile;bUniversidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile |
| |
| Abstract: | Dibenzothiophene (DBT) hydrodesulphurization (HDS) reaction at 3 MPa and 325–375 °C on Mo/γ-Al2O3 single-bed and Me/γ-Al2O3//SiO2//Mo/γ-Al2O3 (Me = Co or Ni) double-bed catalysts were investigated. Results indicate that ratio cyclohexylbenzene (CHB)/biphenyl (BP) or selectivity is higher when using double-beds rather than a single-bed. Synergy in dibenzothiophene hydrodesulphurization on Co//Mo and Ni//Mo double-beds is also detected. Changes in selectivity and conversion are attributed to the action of spillover hydrogen (Hso) formed in the first bed that reaches the second bed. |
| |
| Keywords: | Spillover hydrogen Selectivity Hydrodesulfurization Dibenzothiophene |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
