磷化镍调变MoS_2/γ-Al_2O_3催化剂的加氢脱硫性能  

Hydrosulfurization performance study of Ni_2P-modified MoS_2/γ-Al_2O_3 catalysts

作　　者：刘理华[1] 李广慈[1] 刘宾[1] 刘迪[1] 胡小夫[1] 柳云骐[1] 刘晨光[1] 

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266555

出　　处：《化工学报》2011年第5期1296-1301,共6页CIESC Journal

基　　金：国家重点基础研究发展计划项目(2010CB226905)~~

摘　　要：引言随着人们环保意识的增强,世界各国相继颁布了更为严格的成品油硫含量标准。目前主要国家的车用柴油标准要求硫含量不大于500μg.g-1,而未来柴油硫含量将控制在30-50μg.g-1。加氢脱硫是生产清洁化柴油的重要技术,A series of Ni2P-modified MoS2/γ-Al2O3 catalysts with constant Mo contents were prepared by the thermal decomposition of ammonium tetrathiomolybdate and nickel hypophosphite under N2 atmosphere.The structure of the catalysts was characterized by N2 adsorption-desorption,X-ray diffraction,and high-resolution transmission electron microscopy.The catalytic performance of the catalysts for hydrodesulfurization（HDS）was evaluated in a fixed-bed microreactor using dibenzothiophene（DBT）as the model compound.The results indicated that when the amount of Ni2P was 4%（mass）,the catalyst showed a relatively high catalytic activity with a strong preference for the hydrogenation desulfurization（HYD）pathway.Its hydrogenation selectivity（2.11）was 2.9 times that of reference catalyst（0.72）at 300℃.The addition of Ni2P had an effect on the average stacking number and slab length of MoS2.

关 键 词：磷化镍 二硫化钼催化剂 调变 加氢脱硫 

分 类 号：O643.3[理学—物理化学] TE624.4[理学—化学]