渣油加氢处理过程中Mo-V/Al_2O_3的催化性能及协同效应  

Catalytic Performance and Synergetic Effect of Mo-V/Al_2O_3 in Residue Hydrotreatment

作　　者：贾燕子[1] 杨清河[1] 孙淑玲[1] 聂红[1] 李大东[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《催化学报》2012年第9期1546-1551,共6页

基　　金：国家重点基础研究发展计划(973计划;2006CB202505)~~

摘　　要：采用孔饱和浸渍法制备了不同Mo/(Mo+V)原子比的Mo-V/Al2O3催化剂,运用拉曼光谱、H2程序升温还原和高分辨透射电镜对催化剂进行了表征,同时以萘为模型化合物,考察了催化剂的加氢活性;以科威特常渣为原料,考察了其加氢脱金属和脱硫活性.结果表明,在上述反应中,Mo与V具有协同作用.由于渣油中金属和硫的存在形态不同,并且V-Mo-S相和V-S相对于渣油加氢脱金属反应的催化作用要大于渣油加氢脱硫反应,因此与Ni-Mo/Al2O3催化剂相比,Mo-V/Al2O3催化剂的脱金属活性较高,而脱硫活性较低.Mo-V/Al2O3 catalyst samples with different atom ratios of Mo/（Mo＋V） were prepared by pore volume impregnation. The catalyst samples were characterized by Raman spectroscopy, H2 temperature-programmed reduction, and high resolution transmission electron mi- croscopy. The catalytic performance of Mo-V/Al2O3 samples for model molecules （naphthalene） and for real feedstock （Kuwait atmosphere residue） was measured after sulfidation. Hydrogenation （HYD）, hydrodemetallization （HDM）, and hydrodesulfurization （HDS） were as- sessed. It can be concluded that Mo and V exhibited a synergetic effect in model molecules HYD and residue HDM reactions. Because the metals and sulfurs exist in different forms in residue and the V-S and V-Mo-S phases are more active for HDM than HDS, it is observed that the Mo-V/Al2O3 catalyst exhibited higher HDM activity and lower HDS activity compared with the Ni-Mo/Al2O3 catalyst. Key words： residue; hydrodemetallization; hydrogenation; molybdenum; vanadium; alumina

关 键 词：渣油 加氢脱金属 加氢 钼 钒 氧化铝 

分 类 号：TE624.43[石油与天然气工程—油气加工工程]