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中文摘要：
以正硅酸乙酯为硅源,以钼酸铵和磷酸二氢铵为钼源和磷源,采用溶胶-凝胶法,经干燥、焙烧,程序升温还原制备得到二氧化硅负载磷化钼（MoP）催化剂。以噻吩、二苯并噻吩为模型化合物,对负载催化剂的加氢脱硫活性进行评价,考察了负载量、反应压力、反应温度等因素对催化活性的影响。实验结果表明,MoP/SiO2催化剂Mo的最佳负载量为20%,升高反应压力和温度均有利于提高二苯并噻吩的转化率,但降低了产物中联苯的含量。
英文摘要：
A series of silica supported MoP（MoP/SiO2）catalysts with different Mo loadings were prepared by sol-gel method,followed by temperature programmed reduction treatment.The hydrodesulfurization（HDS）activity of the MoP/SiO2 catalysts was evaluated with thiophene and dibenzothiophene as model compounds.The influences of Mo loading,reaction pressure and temperature on the HDS activity were investigated.The catalysts MoP/SiO2 exhibit high activity for the HDS of thiophene and dibenzothiophene;the highest activity is observed over MoP/SiO2 with a Mo loading of 20%.An elevation of the reaction pressure or temperature can enhance the HDS of dibenzothiophene;however,it may also decrease the content of biphenyl in the products.
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