摘要
一出一步舞综合了在 SiO <sub>2</sub> 上支持的 Ni-Mo-S 催化剂被准备并且为 dibenzothiophene (DBT ) 的 hydrodesulphurization (HDS ) 使用了，并且 4,6-dimethyl-dibenzothiophene (4,6-DMDBT ) ，并且为 tetralin 的加氢。催化剂在 280 祮漠桴牥愠敲獡的温度与 DBT 和 4,6-DMDBT 的完全的变换显示出相对高的 HDS
A one-step synthesized Ni-Mo-S catalyst supported on SiO2 was prepared and used for hydrodesulphurization （HDS） of dibenzothiophene （DBT）, and 4,6-dimethyl-dibenzothiophene （4,6-DMDBT）, and for hydrogenation of tetralin. The catalyst showed relatively high HDS activity with complete conversion of DBT and 4,6-DMDBT at temperature of 280℃ and a constant pressure of 435 psi. The HDS conversions of DBT and 4,6- DMDBT increased with increasing temperature and pressure, and decreasing liquid hourly space velocity （LHSV）. The HDS of DBT proceeded mostly through the direct desulphurization （DDS） pathway whereas that of 4,6-DMDBT occurred mainly through the hydrogenation- desulphurization （HYD） pathway. Although the catalyst showed up to 24% hydrogenation/dehydrogenation con- version oftetralin, it had low conversion and selectivity for ring opening and contraction due to the competitive adsorption of DBT and 4,6-DMDBT and insufficient acidic sites on the catalyst surface.
