硼改性TiO_2纳米管阵列负载Mo-Ni-P催化剂的制备及加氢脱硫性能

Preparation and Hydrotreating Desulfurization Properties of Boron-Modified TiO_2 Nanotube Array Mo-Ni-P Catalyst

采用阳极氧化法制备适宜孔容和大比表面积的TiO2纳米管阵列,以其为载体将具有催化加氢活性的金属Mo和Ni负载其表面。通过负载前硼改性、磷修饰等手段制备了具有较大孔径(72.3nm)和比表面积(156m2/g)的催化加氢精制催化剂,并对其进行表征。催化加氢脱硫性能选用5mL固定床小试设备,以孤岛焦化柴油作为原料进行加氢评价。结果表明,压力7MPa,温度360℃,空速1.5h-1,氢油体积比为600∶1的条件下,该柴油产品脱硫率为96.6%,基本达到工业化生产的要求。

The nanotube array with big specific surface-area and aperture was prepared by the anodic oxidation.B-modified Mo-Ni-P hydrotreating catalyst with pore diameter of 72.3 nm and specific surface area of 156 m2/g was prepared by the impregnation method,and characterized by mercury intrusion method and XRD.The activity of the novel catalyst was evaluated in a fixed bed reactor using diesel oil of Gudao island as the raw material.The results showed that the desulfurization rates of the products reached 96.6% under the optimum hydrogenation condition as follows：temperature 360 ℃,pressure 7 MPa, volume ratio of hydrogen to oil 600∶1 and space velocity 1.5 h^-1 .