高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (1): 80.

• 论文 • 上一篇    下一篇

载钴分子筛的XPS研究

魏诠, 应春钟   

  1. 吉林大学测试中心, 130023
  • 收稿日期:1989-03-02 出版日期:1991-01-24 发布日期:1991-01-24
  • 通讯作者: 魏诠
  • 基金资助:

    国家自然科学基金

X-ray Photoelcctron Spectroscopy Study on Cobalt-impregnated Zeolites

Wei Quan, Ying Chun-zhong   

  1. Centre of Analysis and Testing, Jilin University, Changchun, 130023
  • Received:1989-03-02 Online:1991-01-24 Published:1991-01-24

PDF (PC)

被引次数

24

摘要： 借助XPS技术研究了浸渍法得到的3种载钴分子筛Co/HY、Co/ZSM-5和Co/HA的表面状态和组成.结果表明,这些分子筛的表面深处都有难被还原的类CoAl2O4物种存在,而易被还原的钴羟基化合物覆盖于分子筛的表面.空气焙烧加快了类CoAl2O4物种的生成.用H2还原实验考察了3种载钴分子筛上钴物种与分子筛之间相互作用的程度.

关键词: 钴离子, 分子筛, X光电子能谱

Abstract: X-ray photoelectron spectroscopy was used to investigate three impregnated zeolites Co/HY, Co/ZSM-5 and Co/HA. It is found that the three zeolites cotain nonreducible CoAl2O4species in the interior of the zeolies, and the reducible cobalt hydrate on the surface of the zeolites. The calcination process can accelerate the formation fo CoAl2O4species. The interaction between Co species and zeolites in the three samples of zeolites was investigated by using the H2reduction experiments. It is shown that the sequence of interaction extent follows. Co/HA > Co/ZSM-5 > Co. HY.

Key words: Cobalt ion, Zeolite, XPS

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