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学科主题: 物理化学
题名: Structure-sensitivity of hydrodesulfurization of 4,6-dimethyldibenzothiophene over silica-supported nickel catalysts
作者: Shu YY(舒玉瑛) ;  Yong-KulLee ;  S.T.Oyama
会议名称: The 232nd ACS National Meeting
会议日期: 2006-9-10
出版日期: 2006-09-10
会议地点: 美国
通讯作者: 舒玉瑛
部门归属: 十五室
主办者: 美国化学会
摘要: The effect of surface area on the hydrodesulfurization (HDS) of 4,6-dimethyldibenzothiophene (4,6-DMDBT) was studied on a series of supported nickel phosphide catalysts of low (Ni2P/SiO2-L, 96 m2 g-1), medium (Ni2P/SiO2-M, 133 m2 g-1) and high (Ni2P/SiO2-H, 208 m2 g-1) specific surface areas. The best catalyst, Ni2P/SiO2-H, gave a steady-state conversion of 99+% at 613 K, which was higher than that of the Ni2P/SiO2-M (94%) or the Ni2P/SiO2-L (76%). The order (H > M > L) correlated with the dispersion of the catalysts as measured from CO uptakes (125 vs. 99 vs. 59 µmol g-1), and the Ni2P crystallite size as determined from X-ray diffraction (6.5 vs. 7.8 vs. 10.1 nm). Extended X-ray absorption fine structure (EXAFS) and elemental analysis measurements showed that the nickel phosphide was partially sulfided and formed a surface phosphosulfide phase in the HDS reaction. The HDS reaction for this molecule is structure-sensitive.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/112100
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Shu YY,Yong-KulLee,S.T.Oyama. Structure-sensitivity of hydrodesulfurization of 4,6-dimethyldibenzothiophene over silica-supported nickel catalysts[C]. 见:The 232nd ACS National Meeting. 美国. 2006-9-10.
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