Evaluation of Desorption Energy Distributions from TPD Spectra on a Heterogeneous Solid Surface |
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Authors: | Bogillo V I Shkilev V P |
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Institution: | (1) Institute of Surface Chemistry, National Academy of Sciences, 31 Prospect Nauki, 252022 Kiev, Ukraine |
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Abstract: | The condensation approximation (CA) and numerical regularization procedure (RP) methods used to solve a Fredholm integral
equation of the first kind describing the adsorption equilibria on a heterogeneous solid surface under isothermal conditions
have been adopted in the present study to evaluate desorption energy distributions from temperature-programmed desorption
(TPD) spectra. From comparisons of the computational results obtained by means of these methods on the basis of simulated
TPD spectra, it follows that the CA gives stable solutions for wide desorption energy distributions and it can be used successfully
for calculations from wide and clear resolved peaks in the TPD spectra. The use of the RP is more advantageous for acquisition
of the distributions from closely related narrow peaks in the TPD spectra.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | desorption energy distribution heterogeneous solid surface non-isothermal kinetics TPD spectra |
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