Issue 8, 2000
From the journal:

Physical Chemistry Chemical Physics

Infrared study of CO adsorbed on Co/γ-Al2O3 based Fischer–Tropsch catalysts; semi-empirical calculations as a tool for vibrational assignments

L. E. S. Rygh,*a   O. H. Ellestad,a   P. Klæboea  and  C. J. Nielsena  

* Corresponding authors

a Department of Chemistry, University of Oslo, P.O. Box 1033, Oslo, Norway
E-mail: l.e.s.rygh@kjemi.uio.no

Abstract

The adsorption of CO(g) on a Co/γ-Al2O3 catalyst has been studied by diffuse reflectance infrared spectroscopy. The effects of pressure, temperature and the addition of O2(g) and H2(g) have been investigated. Vibrational bands can be assigned to specific carbonyl species on the reduced Co catalyst, at low surface concentration, via a theoretical model. The basis for the model is an empirical relation between the number of valence electrons in transition metal carbonyl complexes and the corresponding carbonyl stretching frequency. This relation has been extended to metallic surfaces and combined with results from extended Hückel calculations.

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Article information

DOI
https://doi.org/10.1039/B000188K
Article type
Paper
Submitted
06 Jan 2000
Accepted
14 Feb 2000
First published
05 Jan 2000

Phys. Chem. Chem. Phys., 2000,2, 1835-1846

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Infrared study of CO adsorbed on Co/γ-Al2O3 based Fischer–Tropsch catalysts; semi-empirical calculations as a tool for vibrational assignments

L. E. S. Rygh, O. H. Ellestad, P. Klæboe and C. J. Nielsen, Phys. Chem. Chem. Phys., 2000, 2, 1835 DOI: 10.1039/B000188K

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