X射线光电子能谱法研究加氢脱硫催化剂中活性元素的化学态  

Investigation of Chemical States for Hydrodesulfurization Catalysts by Using X-Ray Photoelectron Spectroscopy

作　　者：邱丽美[1] 齐和日玛[2] 刘清河[1] 徐广通[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]北京理工大学化学物理研究所,北京100081

出　　处：《石油学报（石油加工）》2011年第4期638-642,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划"973"项目(2006CB202506)资助

摘　　要：利用S2p、Mo3d、W4f、Co2p_(3.2)和Ni2p_(3.2)X射线光电子能谱(XPS)和谱图解析方法分析了硫化态Co-Mo/Al_2O_3(SiO_2)和Ni-W/Al_2O_3加氢脱硫催化剂中各负载元素的常见化学态,简要阐述了XPS强度比法推测活性金属在载体表面分散状态的方法。这些信息可为加氢脱硫催化剂工艺条件的选择、催化机理和失活原因的研究提供技术支撑。The investigation of X-ray photoelectron spectroscopy （XPS） on the sulfided Co（Ni）-Mo （W）/Al2O3 （SiO2） hydrodesulfurization（HDS） catalysts was carried out and the method of deducing chemical states via S2p, Mo3d, W4f, Co2p3/2 and Ni2p3/2 XP spectra was carefully studied. The typical chemical states of the elements in the sulfided HDS catalysts were discussed. Besides, the distribution of active metal on the carrier obtained from XPS intensities was briefly illustrated. These information would provide evidence for the investigation of catalysis mechanism and deactivation reasons.

关 键 词：XPS 硫化态加氢脱硫催化剂 化学态 分散度 

分 类 号：O657.62[理学—分析化学]