Computer simulation of derivative TPD

Yun Hang Hu*, Hui Lin Wan, Khi Rui Tsai, Chak Tong Au

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

10 Citations (Scopus)


In this paper, the advantages of employing a Derivative Temperature-Programmed Desorption (DTPD) curve in TPD analysis are demonstrated. Based on a series of theoretical DTPD curves obtained by computer simulation with double assumption of zero signal noise and no temperature gradients across the sample, a comparison is made between the TPD and DTPD curves, and it is found that the approach can (a) estimate desorption order, (b) raise resolving power, and (c) eliminate baseline drift. The equations for calculating kinetic parameters from DTPD curves are also presented. The results show that these equations are valid.

Original languageEnglish
Pages (from-to)289-301
Number of pages13
JournalThermochimica Acta
Issue number1-2
Publication statusPublished - 25 Mar 1996

Scopus Subject Areas

  • Instrumentation
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

User-Defined Keywords

  • Computer simulation
  • Derivative TPD curve
  • TPD


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