高金属含量Ni-W催化剂的制备及竞争性催化反应性能  

PREPARATION OF HIGH METAL CONTENT Ni-CATALYST AND PERFORMANCE FOR COMPETITIVE CATALYTIC REACTION

作　　者：刘晨光 刘欢 殷长龙 

机构地区：[1]中国石油大学重质油国家重点实验室CNPC催化重点实验室,山东青岛266580

出　　处：《石油炼制与化工》2014年第11期23-28,共6页Petroleum Processing and Petrochemicals

基　　金：国家重点基础研究发展计划"973"项目(2010CB226905);教育部自主创新科研计划项目(14CX06032A);国家自然科学基金项目(U1162203)资助项目

摘　　要：合成了一系列不同Ni、W比例的复合金属氧化物,并以此为前躯体制备高金属含量Ni-W催化剂,以萘、喹啉和二苯并噻吩为模型化合物进行了竞争性加氢脱芳烃、加氢脱氮及加氢脱硫反应研究;采用XRD、N2吸脱附、SEM、HRTEM等手段对Ni-W复合氧化物及高金属含量Ni-W催化剂进行了表征。结果表明：Ni-W复合氧化物为一系列具有NiWO4和WO3·0.75H2O晶相的介孔物质,硫化态高金属含量Ni-W催化剂中WS2的堆垛层数为2~6层,片层长度集中在3~10nm范围内;高金属含量Ni-W催化剂作用下的喹啉及二苯并噻吩转化率均达到90%以上,但萘的转化率较低。A series of composite Ni-W oxides with different Ni/W atomic ratios were synthesized.The Ni-W catalysts with high metal content were prepared using these Ni-W mixed oxides as precursors and characterized by XRD,N2adsorption-desorption,SEM and HRTEM.The competitive catalytic reactions of the catalysts were tested with a mixed model compound（naphthalene,quinoline and dibenzothiophene）to study the performance of hydrodearomatization,hydrodenitrogenation and hydrodesulfurization,respectively.The results show that the catalysts with mesoporous structure,contain NiWO4 and WO3·0.75H2 O phases,and the stacking layers of the WS2 slab on the sulfided high metal NiW are 2—6the slab length in the range of 3—10nm.The reaction results reveal that the Ni-W catalyst exhibits high catalytic activity toward the conversion of quinoline and dibenzothiophene,the conversions are both more than 90%,while the conversion of naphthalene is relatively low.

关 键 词：高金属含量催化剂 Ni-W复合金属氧化物 加氢脱硫 加氢脱氮 加氢脱芳烃 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]