Derivative Temperature-Programmed Desorption Spectra

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (2): 238.

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Derivative Temperature-Programmed Desorption Spectra

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

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

Abstract

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

TrendMD:

HU Yun-Hang, WAN Hui-Lin, TSAI Khirui. Derivative Temperature-Programmed Desorption Spectra[J]. Chem. J. Chinese Universities, 1993, 14(2): 238.

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