分别以商品化和水热法合成的多级孔结构的γ-Al₂O₃为载体，采用磷源热解法制得负载型Ni₂P催化剂。通过XRD、SEM、N₂物理吸脱附和CO化学吸附等手段对所制备的载体及催化剂进行表征，考察了不同载体对催化剂常压下噻吩加氢脱硫性能的影响。结果表明，自制的γ-Al₂O₃具有更高的比表面及发达的微观结构，以其为载体制备的Ni₂P催化剂具有更高的分散度及催化脱硫性能。在反应温度为370℃、反应压力为1.01×10⁵ Pa、氢/油体积比为500、空速为3.2 h^-1的条件下，HDS转化率达到95.5%。

Supported Ni₂P catalysts are prepared via phosphorus source pyrolysis method using commercial hierarchical pore γ-Al₂O₃ and self-made hierarchical pore γ-Al₂O₃ by hydrothermal method as carriers,respectively.The as-synthesized catalysts and supports are characterized by N₂ adsorption-desorption,XRD,SEM and CO-chemisorption.Influences of different carriers on the catalysts' performance in hydrodesulfurization (HDS) of thiophene under normal pressure are studied.Results show that self-made hierarchical γ-Al₂O₃ has higher specific surface and well-developed microstructure,and the corresponding catalyst shows higher dispersion and better catalytic desulfurization performance.HDS conversion reaches 95.5% when reaction temperature remains at 370℃,reaction pressure is 1.01×10⁵ Pa,volume ratio of H₂/oil is 500,and hourly space velocity is 3.2 h^-1.

王广建(1963-),男,博士,教授,博士生导师,主要从事环境净化领域的催化材料合成及催化剂制备、反应器设计开发与优化研究,wgjnet@126.com