Mo-Ni-P纳米自组装Al2O3劣质柴油加氢催化剂脱硫研究

摘要

Mo-Ni - P self-assembled nano- A12O3 catalyst for hydrodesulfurization of diesel can be prepared, Mo-Ni bimetallic active component was supported on the large pore volume of nano self-assembly of mesoporous alumina by the method of modification and immersion. The catalysts is characterized by mercury and XRD. The loading of Mo- Ni bimetallic in large pore volume of nano self-assembly of mesoporous Ni-Mo alumina catalyst is w(NiO) = 7. 69%.w(MoQ3 ) = 27. 2%, tt?(P) = 0. 05%. The active of catalyst,the fixed bed reactor and Gudao coking diesel raw materials is used to evaluate the desulfurization active.which show the optimum reaction condition of desulfurization activity-the reaction temperature is 370 'C, pressure is 7.5 Mpa.hydrogen oil volume ratio is 700. Space velocity is 1. 5 h"1. Under these conditions, the sulfur content of diesel can drop from 14 100 f*m/g to 125 fim/g.%制备了以纳米自组装大孔容介孔氧化铝为载体,改性和共浸法制备担载Mo- Ni双金属活性组分的Mo- Ni-P纳米自组装Al2O3柴油加氢脱硫催化剂.通过压汞法和XRD对催化剂进行表征.纳米自组装大孔客介孔氧化铝催化剂Ni- Mo的负载量为ω(NiO)- 7.69％,ω(MoO3)=27.2％,P改性后其质量分数为0.05％.以孤岛焦化柴油为原料,在固定床反应器上评价了催化剂的脱硫反应活性.结果表明,脱硫适宜的反应条件为:反应温度370℃,压力7.5 MPa,氢油体积比700,体积空速1.5 h-1.在此条件下,柴油含硫质量分数可由14 100 μg/g降至125μg/g.