publication . Article . 2007

Quantitative Analysis of Adsorbate Concentrations by Diffuse Reflectance FT-IR

Phanichphant, S.; Meunier, Frederic; Sirita, S.;
Open Access
  • Published: 15 May 2007 Journal: Analytical Chemistry, volume 79, pages 3,912-3,918 (issn: 0003-2700, eissn: 1520-6882, Copyright policy)
  • Publisher: American Chemical Society (ACS)
  • Country: Bangladesh
Abstract
Fully quantitative analyses of DRIFTS data are required when the surface concentrations and the specific rate constants of reaction (or desorption) of adsorbates are needed to validate microkinetic models. The relationship between the surface coverage of adsorbates and various functions derived from the signal collected by DRIFTS is discussed here. The Kubelka-Munk and pseudoabsorbance (noted here as absorbance, for the sake of brevity) transformations were considered, since those are the most commonly used functions when data collected by DRIFTS are reported. Theoretical calculations and experimental evidence based on the study of CO adsorption on Pt/SiO2 and f...
Subjects
free text keywords: /dk/atira/pure/subjectarea/asjc/1600/1602, Analytical Chemistry, Reaction rate constant, Fourier transform spectroscopy, Infrared spectroscopy, Adsorption, Desorption, Chemistry, Diffuse reflection, Reaction rate, Absorbance
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publication . Article . 2007

Quantitative Analysis of Adsorbate Concentrations by Diffuse Reflectance FT-IR

Phanichphant, S.; Meunier, Frederic; Sirita, S.;