三维贯通大孔Al_(2)O_(3)载体及其渣油加氢脱金属催化性能  

Macroporous Al_(2)O_(3) with three-dimensionally interconnected structure:Catalytic performance of hydrodemetallization for residue oil

作　　者：隋宝宽 王刚 袁胜华 杨卫亚 凌凤香 王少军 何海龙 SUI Bao-kuan;WANG Gang;YUAN Shen-ghua;YANG Wei-ya;LING Feng-xiang;WANG Shao-jun;HE Hai-long(Dalian Research Institute of Petroleum and Petrochemicals,SINOPEC,Dalian 116045,China;Dalian Numerous Wisdom Innovation Catalyst Co.,Ltd,Dalian 116011,China)

机构地区：[1]中国石油化工股份有限公司大连石油化工研究院,辽宁大连116045 [2]大连众智创新催化剂有限公司,辽宁大连116011

出　　处：《燃料化学学报》2021年第8期1201-1207,共7页Journal of Fuel Chemistry and Technology

基　　金：中国石油化工股份有限公司项目(119014-3-3)资助。

摘　　要：采用相分离技术制备了具有三维贯通大孔结构的Al_(2)O_(3)载体,载体的大孔尺寸为250 nm,比表面积174 m^(2)/g,具有21 nm及250 nm集中的双重孔分布,抗压强度达到16.5 N/mm。采用该载体制备的渣油加氢脱金属催化剂仍然保持与载体接近的双峰孔分布、三维贯通大孔结构及较大的抗压强度等特性,Ni、Mo金属组分在载体表面分散均匀。催化剂的片层状活性相的长度为3−10 nm,堆垛层数1−7层,其中,大于4层的活性相分布约占40%,形成非均匀形态的活性相结构。与现有工业催化剂相比,三维贯通大孔渣油加氢脱金属催化剂的脱金属率、脱硫率及脱残炭率分别提高6.2%、6.0%及6.8%,孔结构、表面性质、活性相结构及其协同作用是三维贯通大孔催化剂具有优异催化性能的主要原因。Three-dimensionally interconnected macroporous(3DM)Al_(2)O_(3) was prepared by phase separation.Macropore size of the obtained Al_(2)O_(3) is 250 nm with a bimodal pore distribution(at about 21 and 250 nm,respectively)and the BET specific surface area of 174 m^(2)/g,as well as the crushing strength of 16.5 N/mm.Ni and Mo on the 3DM catalyst are uniformly dispersed on the surface of the support.The active phases of sulfurized catalyst possess length of 3−10 nm and stacking layers of 1−7.The stacking distribution of active phase more than 4 layers is about 40%,forming a non-uniform active phase structure.Compared with the industrial catalysts,the hydrodemetallization(HDM)rate,hydrodesulfurization(HDS)rate and hydrodecarbonization(HDCCR)rate of the 3DM catalyst increase by 6.2%,6.0%and 6.8%,respectively.The pore structure,surface properties,active phase structure and their synergistic effect may be the main reasons for the excellent catalytic performance of the 3DM catalyst.

关 键 词：三维贯通 大孔氧化铝 加氢脱金属 渣油 

分 类 号：O641[理学—物理化学] O649[理学—化学]