【摘要】 以TEOS为硅源、聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物表面活性剂(P123)为模板剂,在水热条件下合成了SBA-15,用XRD、N2吸附、HRTEM等方法对其进行了表征。以SBA-15作载体,担载Ni-Mo制备了深度加氢脱硫(HDS)催化剂,在高压固定床反应器上以二苯并噻吩(DBT)和4,6-二甲基-二苯并噻吩(4,6-DMDBT)为模型化合物,考察了以SBA-15作载体的催化剂对DBT和4,6-DMDBT的HDS活性。结果表明,合成的SBA-15具有较高的比表面积、均匀的孔径。SBA-15担载Ni-Mo制备的催化剂表现出较高的加氢脱硫活性,其中Ni/Mo原子比为0.25时,催化剂的加氢脱硫活性最高。更多还原

【Abstract】 Siliceous SBA-15 was synthesized by a conventional hydrothermal method with TEOS as Si resource and PEO-PPO-PEO copolymer(P123)as template.The structure and properties of the synthesized SBA-15 were studied by means of XRD,N2 adsorption,TEM.A deep hydrodesulfurization(HDS)catalyst,which was considerably active to desulfurize dibenzothiophene(DBT)and 4,6-dimethyl dibenzothiophene(4,6-DMDBT),was prepared by depositing Ni-Mo species over SBA-15.It was indicated that the SBA-15 possessed extremely high surface area and even pore diameter,favoring the dispersion of the active species,resulting in very high HDS activity.The optimal Ni/Mo atomic ratio for this series of catalysts was 0.25,with which the Ni-Mo(0.25)/SBA-15 exhibited excellent performance in HDS of DBT and 4,6-DMDBT.更多还原