高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (7): 1395.

• 研究简报 • 上一篇    下一篇

硫化态PtMo/γ-Al2O3催化剂活性位的低温CO-FTIR方法表征及噻吩HDS 活性的研究

齐兴义1, 郭林1, 李文钊2, 辛勤2, Michel Lacroix3, Michel Vrinat3, Francoise Mauge4   

  1. 1. 北京航空航天大学材料科学与工程学院, 北京 100083;
    2. 中国科学院大连化学物理研究所, 大连 116023;
    3. Institut de Recherches surla Catalyse, 2 Avenue Albert Einstein, 69626 Villearbanne Cedex, France;
    4. Laboratoire Catalyseet Spectrochimie, I.S.M.R.A., F-14050 Caen Cedex, France
  • 收稿日期:2001-06-18 出版日期:2002-07-24 发布日期:2002-07-24
  • 通讯作者: 齐兴义(1956年出生),男,博士,副教授,从事催化化学研究.E-mail:qixy@mail.china.com E-mail:qixy@mail.china.com

Studies on Characterization of Active Sites of Sulfided PtMo/γ-Al2O3 Catalysts by Using Low Temperature FTIR Spectroscopy of Adsorbed CO and Their Thiophene HDS Activity

QI Xing-Yi1, GUO Lin1, LI Wen-Zhao2, XIN Qin2, Michel-Lacroix3, Michel-Vrinat3, Francoise-Mauge4   

  1. 1. Faculty of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    3. Institut de Recherches surla Catalyse, 2 Avenue Albert Einst ein, 69626 Villearbanne Cedex, France;
    4. Laboratoire Catalyseet Spectrochimie, I.S.M.R.A., F-14050 Caen Cedex, France
  • Received:2001-06-18 Online:2002-07-24 Published:2002-07-24

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关键词: 硫化态PtMo/&gamma, -Al2O3, 低温CO-FTIR, 噻吩, 加氢脱硫

Abstract: Aseries of sulfided PtMo/γ-Al2O3 catalysts[ w (Mo)=9.0%] with different contents of Pt were characterized by using low temperature FTIRspectroscopy of adsorbed CO, while their HDS activity was investigated with thiophene as a model substrate. Experimentally, it was found that no existence of the bands related to the surface complexes of Al 3+ ←COand Pt0←CO→Pt0 was observed at 77 Kand that the rate of the thiophene HDS reaction(573 K) is well linearly proportional to the area of the Pt0←COband at 2093 cm-1 with a higher extrapolated HDS rate compared to that of sulfided Mo/γ-Al2O3 catalyst at the zero content of platinum. On the basis of the results here, the conclusion may be made that the active monolayer phase of Pt Mo Smay be formed over sulfided PtMo/γ-Al2O3 catalysts during the sulfidation process and that both Mo 2+ and Pt0 sites for COadsorption should be the active reaction centers of thiophene HDS .

Key words: Sulfided /γ-Al2O3, Low temperature CO FTIR, Thiophene, HDS

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