高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (5): 942.

• 研究快报 • 上一篇    下一篇

ZSM-5分子筛光催化活性的初步研究

颜桂炀, 王绪绪, 付贤智   

  1. 福州大学光催化研究所, 福州 350002
  • 收稿日期:2003-12-16 出版日期:2004-05-24 发布日期:2004-05-24
  • 通讯作者: 付贤智(1957年出生),男,博士,教授,博士生导师,从事光催化化学研究.E-mail:xzfu@fzu.edu.cn E-mail:xzfu@fzu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20133010,20373011);福建省科技计划项目基金(批准号:E0210008)资助

A Primary Study on Photocatalytic Properties of ZSM-5 Zeolite

YAN Gui-Yang, WANG Xu-Xu, FU Xian-Zhi   

  1. Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
  • Received:2003-12-16 Online:2004-05-24 Published:2004-05-24

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被引次数

35

关键词: 光催化, 乙烯氧化, ZSM-5分子筛, 铁物种

Abstract: The photocatalytic degradation of several organic compounds in airstreams was studied at room temperature by using a bed reactor packed with the commercial HZSM-5 and operated in a circulating mode. It was found that the raw HZSM-5 shows an unanticipated photocatalytic activity for oxidating ethylene, bromomethane and methyl orange. XRF and AAS analyses reveal that the photocatalytic activity of the ZSM-5 results from the trace amount of iron impurity in the sample, and the photoactivity is positively related with the content of iron. The primary results of characterization by XRD, DRS, XPS and SPVS suggest that the most of Fe existed in the framework of zeolite and in a tetrahedral coordination. The iron species might be excited by UV irradiation to form a charge transfer excited complex along with the ligands and an electron excited state of Fe 3+, which are responsible for the photocatalytic behavior of zeolites.

Key words: Photocatalysis, Oxidation of ethylene, ZSM-5 zeolites, Iron

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