高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (2): 238.

• 研究论文 • 上一篇    下一篇

程序升温脱附导数谱

胡云行, 万惠霖, 蔡启瑞   

  1. 厦门大学化学系, 固体表面物理化学国家重点实验室, 厦门 361005
  • 收稿日期:1992-04-08 修回日期:1992-11-22 出版日期:1993-02-24 发布日期:1993-02-24
  • 通讯作者: 胡云行
  • 基金资助:

    国家自然科学基金

Derivative Temperature-Programmed Desorption Spectra

HU Yun-Hang, WAN Hui-Lin, TSAI Khirui   

  1. Department of Chemistry and State Key Laboratory for Physical Chemistryof the Solid Surface, Xiamen University, Xiamen, 361005
  • Received:1992-04-08 Revised:1992-11-22 Online:1993-02-24 Published:1993-02-24

摘要: 提出了TPD导数谱,并以理论TPD导数谱图为对象,讨论了TPD导数谱在堤高分辨率、消除噪音干扰及确定脱附级数等方面的特点。推导了由TPD一阶、二阶导数谱求算脱附活化能和指前因子的数学方程式,并对其进行了验证。

关键词: 程序升温脱附, 导数谱, 解析

Abstract: In this paper, derivative Temperature-Programmed Desorption (TPD) spectra were proposed.According to Polangi-Wigner model, a series of theoretical derivative TPDspectra were obtained by computer.Throughout the spectra, the characteristics of the derivative TPDspectra, in raising resolving power, decreasing baseline noise and estimating desorption order, were discussed.The e-quations of calculating desorption activation energy and pre-exponential factor from the 1st and 2nd derivative TPDspectra were obtained and confirmed.

Key words: Temperature-programmed desorption, Derivative spectrum, Resolution

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