钼/活性炭渣油加氢催化剂的硫化  

Sulfurization of activated carbon supported molybdenum-based catalysts for hydroprocessing of residuum

作　　者：刘元东[1] 

机构地区：[1]中国石油天然气股份有限公司石油化工研究院,北京100195

出　　处：《化工进展》2013年第8期1838-1844,共7页Chemical Industry and Engineering Progress

摘　　要：钼/活性炭催化剂是一种新型渣油加氢催化剂,其硫化效果直接决定着催化剂的活性和稳定性。实验考察了硫化条件对钼/活性炭催化剂(Mo/AC)硫化度的影响,运用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和透射电镜(TEM)等手段对硫化态催化剂进行了表征。结果表明,以二硫化碳为硫化剂,正十六烷为硫化介质,在硫化温度350℃,硫化时间3 h,氢气初压6 MPa条件下催化剂硫化度为85%,活性相MoS2堆垛结构为4～6层,晶片长度为6～10 nm,分布比较均匀,具有良好的加氢活性。Activated carbon supported molybdenum-based catalyst（Mo/AC） is a novel catalyst for hydroprocessing of residuum,and the sulfidation degree determines the activity and stability of catalyst.The sulfurization behavior of Mo/AC was studied.The sulfided catalyst was characterized by means of XRD,XPS,SEM and TEM.Under the following conditions：CS2as sulfiding agent,n-hexadecane as sulfiding medium,sulfiding temperature 350℃,sulfiding time 3 h,partial pressure of H26 MPa,the sulfidation degree of sulfided catalyst was up to 85%.Multilayered MoS2phase was highly dispersed,with stacking structure of 4 ～ 6 layers and length of slabs 6 ～ 10 nm.Evaluation demonstrated that sulfided catalyst achieved a high level of conversion at high distillate selectivity with low coke yield in atmospheric residuum conversion.

关 键 词：硫化 钼 活性炭催化剂 活性相 

分 类 号：TE626.25[石油与天然气工程—油气加工工程]