大孔Mo-Ni/Al_2O_3催化剂的催化裂化柴油加氢性能研究  

Study on the Hydrogenation Performance of Macropore Mo-Ni/Al_2O_3 Catalyst for FCC Diesel

作　　者：丁巍[1,2] 王鼎聪[3] 赵德智[2] 柯明[1] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249 [2]辽宁石油化工大学化学化工与环境学部,抚顺113001 [3]中国石化抚顺石油化工研究院,抚顺113001

出　　处：《无机化学学报》2014年第6期1345-1351,共7页Chinese Journal of Inorganic Chemistry

基　　金：中国石油化工集团资助项目(No.030801)

摘　　要：采用三次纳米自组装合成法,制备了一种以二次纳米自组装Al2O3为主体的大孔主客体催化剂FA-40,具有0.78 cm3· g-1的孔容、114 m2·g-1的比表面积、27 nm的平均孔径、6.0 nm和40 nm的双峰孔结构、孔分布在10～100 nm高度集中、低堆积密度为0.56 g·cm-3、活性金属含量高达35.70％.XRD和TEM分析结果显示,活性金属以直径小于2 nm的微晶态纳米粒子形式均匀分散于主体表面.采用劣质催化裂化柴油进行20 h加氢实验评价,反应趋于稳定时,FA-40的脱硫、脱氮及芳烃饱和率分别达到94.4％、95.5％和67.9％,与F-5相比分别提高了20％、80％和140％.300 h的长周期加氢实验表明,FA-40具有良好的加氢性能.The big pore host-guest catalysis material FA-40 was prepared with the secondary nano-assembly Al2O3 support by third nano-assembly technique which has a pore volume of 0.78 em3·g-1,a specific surface area of 114 m2·g-1,average pore diameter of 27 nm,a structure of double peak pore of 6.0 nm and 40 nm,high concentration pore size distribution of 10～100 nm,a low stacking density of 0.56 g·cm-3 and a concentration of metal as high as 35.70％.The results of the XRD and TEM showed that the active metal uniformly dispersed and existed in form of the microcrystal nano bulk phase which has ＜ 2 nm diameter on the guest surface.Using the poor quality FCC diesel as stock feed,Hydrogenation performance of the different catalysts has been evaluated after 20 h the hydrogenation treating.The results showed that the conversion in desulfurization,denitrification and aromatics saturation for FA-40 were 94.4％,95.5％,67.9％ and 77.6％,52.3％,28.7％.Compared with F-5,increased by about 20％,80％ and 140％,respectively.Stability experiments for a long period of 300 h have been shown that FA-40 was better catalyst for hydrogenation performance.

关 键 词：纳米自组装 大孔 活性金属 主客体催化剂 

分 类 号：O643[理学—物理化学]