Zr改性对NiW/Al_2O_3催化剂加氢性能的影响  

Effect of impregnated zirconium on hydrogenation performance of NiW/Al_2O_3 catalyst

作　　者：朱立[1] 周亚松[1] 魏强[1] 韩璐[1] 罗怡[1] 王靖宇[1] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《化工学报》2013年第7期2474-2479,共6页CIESC Journal

基　　金：国家重点基础研究发展计划项目(2010CB226903)~~

摘　　要：引言随着原油重质化趋势的不断加剧和环保法规对轻质油品质量要求的不断提高,劣质重油轻质化及清洁化生产成为石油加工技术发展的主要方向。溶剂脱沥青是重油脱碳改质工艺之一,得到的脱沥青油一般作为催化裂化的掺炼原料,Ni-W/Al2O3 catalysts for heavy oil hydrotreating were prepared with incipient wetness impregnation,and the effects of zirconium step-impregnated and co-impregnated on the catalytic performance were studied.The catalysts were characterized with H2-TPR,HRTEM,UV-Vis and XPS techniques.The results showed that zirconium weakened the strong interaction between active metals and Al2O3 support,increased the stacked layers of WS2 active phase,zirconium step-impregnated promoted the sulfidation of active metals and increased the dispersion of W species on catalysts surface.Ni-W catalysts prepared with zirconium step-impregnated had outstanding hydrodesulfidation and hydrodenitrogenation performance for Venezuelan deasphalted oil.

关 键 词：Zr改性 加氢脱硫 加氢脱氮 催化剂 

分 类 号：TQ426.92[化学工程]