Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy

S. Chilukoti; E. Widjaja; F. Gao; Huajun Zhang; B.G. Anderson; J.W. Niemantsverdriet; M. Garland

doi:10.1039/b714544f

Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy

S. Chilukoti, E. Widjaja, F. Gao, Huajun Zhang, B.G. Anderson, J.W. Niemantsverdriet, M. Garland

Inorganic Materials & Catalysis

Research output: Contribution to journal › Article › Academic › peer-review

10 Citations (Scopus)

Abstract

The adsorption of NO and CO was studied on an alumina-supported platinum catalyst by in situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS). The temperature range was 50-160°C and a wide variety of partial pressures was used. The band-target entropy minimization (BTEM) algorithm was applied to the DRIFTS data sets resulting in the pure component spectra of numerous species adsorbed on both the Pt (primarily a variety of Pt 0-CO and Pt2+-CO species) and alumina surface (i.e. nitrates, nitrites, bicarbonates, isocyanates) as well as gas-phase species. Thirty-one previously known species were identified as well as 6 new and previously unreported or previously unassigned spectra. The present results indicate that BTEM analysis of DRIFTS data is a very promising tool for the study of heterogeneous catalytic in situ spectroscopic data.

Original language	English
Pages (from-to)	3535-3547
Journal	Physical Chemistry Chemical Physics
Volume	10
Issue number	24
DOIs	https://doi.org/10.1039/b714544f
Publication status	Published - 2008

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Chilukoti, S., Widjaja, E., Gao, F., Zhang, H., Anderson, B. G., Niemantsverdriet, J. W., & Garland, M. (2008). Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy. Physical Chemistry Chemical Physics, 10(24), 3535-3547. https://doi.org/10.1039/b714544f

Chilukoti, S. ; Widjaja, E. ; Gao, F. ; Zhang, Huajun ; Anderson, B.G. ; Niemantsverdriet, J.W. ; Garland, M. / Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy. In: Physical Chemistry Chemical Physics. 2008 ; Vol. 10, No. 24. pp. 3535-3547.

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title = "Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy",

abstract = "The adsorption of NO and CO was studied on an alumina-supported platinum catalyst by in situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS). The temperature range was 50-160°C and a wide variety of partial pressures was used. The band-target entropy minimization (BTEM) algorithm was applied to the DRIFTS data sets resulting in the pure component spectra of numerous species adsorbed on both the Pt (primarily a variety of Pt 0-CO and Pt2+-CO species) and alumina surface (i.e. nitrates, nitrites, bicarbonates, isocyanates) as well as gas-phase species. Thirty-one previously known species were identified as well as 6 new and previously unreported or previously unassigned spectra. The present results indicate that BTEM analysis of DRIFTS data is a very promising tool for the study of heterogeneous catalytic in situ spectroscopic data.",

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Chilukoti, S, Widjaja, E, Gao, F, Zhang, H, Anderson, BG, Niemantsverdriet, JW & Garland, M 2008, 'Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy', Physical Chemistry Chemical Physics, vol. 10, no. 24, pp. 3535-3547. https://doi.org/10.1039/b714544f

Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy. / Chilukoti, S.; Widjaja, E.; Gao, F.; Zhang, Huajun; Anderson, B.G.; Niemantsverdriet, J.W.; Garland, M.

In: Physical Chemistry Chemical Physics, Vol. 10, No. 24, 2008, p. 3535-3547.

Research output: Contribution to journal › Article › Academic › peer-review

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AB - The adsorption of NO and CO was studied on an alumina-supported platinum catalyst by in situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS). The temperature range was 50-160°C and a wide variety of partial pressures was used. The band-target entropy minimization (BTEM) algorithm was applied to the DRIFTS data sets resulting in the pure component spectra of numerous species adsorbed on both the Pt (primarily a variety of Pt 0-CO and Pt2+-CO species) and alumina surface (i.e. nitrates, nitrites, bicarbonates, isocyanates) as well as gas-phase species. Thirty-one previously known species were identified as well as 6 new and previously unreported or previously unassigned spectra. The present results indicate that BTEM analysis of DRIFTS data is a very promising tool for the study of heterogeneous catalytic in situ spectroscopic data.

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DO - 10.1039/b714544f

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