Influence of adsorbed molecules on the positions of the combination and overtone vibrations of surface OH groups

Uwe Zscherpel; B. Staudte; K. Beck

doi:10.1117/12.56424

1 March 1992 Influence of adsorbed molecules on the positions of the combination and overtone vibrations of surface OH groups

Uwe Zscherpel, B. Staudte, K. Beck

Author Affiliations +

Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56424
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany

Abstract

The goal of this study was to determine the influence of adsorbed molecules on the OH bending vibration, which cannot be directly measured in the fundamental region (750 - 1050 cm-1) because of the strong lattice vibrations of the substrate. The only way is to measure the combination vibrations in the near infrared. The Diffuse Reflectance Infrared Fourier Transform (DRIFT) technique was used to study the whole spectral range from the fundamental vibrations of OH groups to the overtones in the near infrared (3000 - 7500 cm-1) on the same sample. Several OH groups with different acidity on silica and crystalline alumosilica (zeolites) have been investigated.

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Uwe Zscherpel, B. Staudte, and K. Beck "Influence of adsorbed molecules on the positions of the combination and overtone vibrations of surface OH groups", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56424

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