高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (1): 103.

• 论文 • 上一篇    下一篇

超细Mo/Al2O3催化剂(Ⅱ)──加氢脱硫表面结构性质研究

冯丽娟1, 陈诵英1, 彭少逸1, 魏昭彬2, 辛勤2   

  1. 1. 中国科学院山西煤炭化学研究所, 煤转化国家重点实验室, 太原 030001;
    2. 中国科学院大连化学物理研究所, 催化基础研究国家重点实验室, 大连
  • 收稿日期:1994-02-03 修回日期:1994-06-20 出版日期:1995-01-24 发布日期:1995-01-24
  • 通讯作者: 冯丽娟,女,32岁,博士,助研.
  • 作者简介:冯丽娟,女,32岁,博士,助研.
  • 基金资助:

    北京市中关村地区联合分析测试中心基金

Ultrafine Catalysts for Hydrodesulfurization(Ⅱ)──Surface Properties of UFP-Mo/Al2O3Catalysts

FENG Li-Juan1, CHEN Song-Ying1, PENG Shao-Yi1, WEI Shao-Bin2, XIN Qin2   

  1. 1. State Key Lab. of Coal Conv., Institute of Coal Chem., Chinese Academy of Sci., Taiyuan, 030001;
    2. State Key Lab. for Catal., Dalian Institute of Chem. Phys., Chinese Academy of Sci., Dalian
  • Received:1994-02-03 Revised:1994-06-20 Online:1995-01-24 Published:1995-01-24

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摘要： 利用XPS考察了超细Mo/Al2O3的氧化态及反应后的表面结构性质。结果表明,氧化态催化剂中Mo主要以Mo6+形式存在,而反应后则以Mo6+和Mo4+两种价态共存;硫亦存在-2及+6两种价态。不同价态Mo、S物种存在的比例受催化剂Mo含量及制备方法的影响。Mo含量增加,Mo6+所占的比例逐渐减小,Mo4+所占比例逐渐增加,S6+的比例则随Mo含量的增加而下降。

关键词: XPS, 超细Mo/Al2O3, 表面性质

Abstract: XPS was used for determining the surface properties of UFP-Mo/Al2O3.It is shown that all molybdenum existed in Mo6+form on the surface of oxidized UFP-Mo/Al2O3catalysts,while a mixture of Mo6+,Mo4+,S6+as well as S2-was observed on the surface of the catalysts after HDSreaction.The ratio of Mo and Sspecies with different valences ispronouncedly affedted by the preparation method and the Mo loading. The portion of Mo6+and S6+decreases with increasing Mo loading.The contents of Mo6+and S6+of s-UFP-Mo/Al2O3catalysts are higher than those of i-UFP-Mo/Al2O3for the same Mo loading.

Key words: XPS, UFP-Mo/Al2O3, Surface properties

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