摘要
以孔饱和浸渍法制备不同Ni/(Ni+V)原子比的NiV/Al2O3催化剂,并对催化剂进行拉曼光谱和H2-程序升温还原(H2-TPR)表征。以科威特常压渣油为原料,考察不同Ni/(Ni+V)原子比的NiV/Al2O3催化剂的渣油加氢脱金属和脱硫活性。研究结果表明:Ni可促进V的聚集,减弱V与载体间的相互作用;Ni与V具有协同作用,Ni/(Ni+V)原子比为0.25时,催化剂的渣油加氢脱金属活性明显高于其它Ni/(Ni+V)原子比的催化剂,渣油加氢脱硫活性略高于其它Ni/(Ni+V)原子比的催化剂。
A series of NiV/Al2O3 catalysts with different Ni/（Ni＋V） atomic ratios were prepared by pore saturation impregnation method.The catalysts were characterized by Raman spectrometry and H2-TPR technique.The hydrodemetallization（HDM） and hydrodesulfurization（HDS） activities of the prepared NiV/Al2O3 catalysts after sulfidation were assessed using Kuwait atmospheric residue as feed.Results showed that the existence of nickel could promote the agglomeration of vanadium and reduce the interaction between vanadium and alumina support.It can be concluded that a positive synergetic effect of nickel and vanadium existed in catalyst having Ni/（Ni＋V） atomic ratio of 0.25,its HDM activity was much higher than those of the other NiV/Al2O3 catalysts,and its HDS activity was also slightly higher.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2012年第10期1-4,共4页
Petroleum Processing and Petrochemicals
基金
国家重点基础研究发展规划"973"项目(2006CB202505)资助
关键词
渣油
加氢
脱金属
协同效应
NIV
AL2O3
residue
hydrogenation
hydrodemetallization
synergetic effect
NiV/Al2O3
