分析测试学报2009，Vol.28Issue(7)：842-845,4.DOI:10.3969/j.issn.1004-4957.2009.07.018
失活加氢精制催化剂中硫铁相的高分辨透射电镜研究
Study on the FexS Phase of Deactivated Hydrotreating Catalyst by High Resolution Transmission Electron Microscopy
杨卫亚 1沈智奇 1杨占林 1王丽华 1凌凤香 1孙万付1
作者信息
- 1. 中国石油化工股份有限公司,抚顺石油化工研究院,辽宁,抚顺,113001
- 折叠
摘要
Abstract
High resolution transmission electron microscopy(HRTEM) coupled with X-ray energy disperse spectroscopy(EDS) and selected area electron diffraction(SAED) were used to study the chemical composition and the crystal structure of the unknown phase of the deactivated hydrotreating catalysts after running.The results of EDS showed that the unknown phase was mainly composed of S and Fe elements and those of SAED patterns showed that the FexS phase was of single crystal structure.With the aid of the double-tilt method,three SAED patterns of different orientations were obtained.According to the crystallographic information corresponding to the diffraction spot of the diffraction spectrum and the relationship between the orientation intersecting angles of three SAED patterns,the ferrous sulphide FexS phase was confirmed to be of orthorhombic syngony,and its molecular formula was Fe0.91S.It was found that the formation of FexS was resulted from the corrosion of the hydrotreating equipment material caused by the acidic component,such as naphthenic acid in the feed oil when the catalyst was used under high temperature and high pressure working conditions.Hence the selection of appropriate material for hydrotreating equipment should be taken into consideration.关键词
加氢精制/催化剂/硫化亚铁/高分辨透射电镜Key words
hydrotreating/catalyst/ferrous sulfide/high resolution transmission electron microscopy(HRTEM)分类
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杨卫亚,沈智奇,杨占林,王丽华,凌凤香,孙万付..失活加氢精制催化剂中硫铁相的高分辨透射电镜研究[J].分析测试学报,2009,28(7):842-845,4.
