Abstract
The effect the structural properties of a support, magnesium aluminum spinel, with different structural characteristics has on the physicochemical properties of Fe–K-containing catalysts for the hydrogenation of CO is studied. It is shown that hematite is the main phase in Fe-containing catalysts. A highly disperse distribution of iron oxide on the surface of the substrate is observed in case of a bimodal distribution of meso-pores. It is shown via IR spectroscopy that Fe2+ cations and metallic iron are the main sites of adsorption. The introduction of potassium reduces the surface concentration of clusters (including Fe2+) in different coordination environments. A rise in the contribution from the subcarbonyl forms of adsorption to the spectrum of the absorption bands and a drop in the amount of oxidized iron on the surfaces of metallic iron particles are observed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
M. E. Dry, Studies in Surface Science and Catalysis (Elsevier, Amsterdam, 2004).
P. A. Chernavskii, G. V. Pankina, and V. V. Lunin, Catal. Lett. 66, 121 (2000).
G. V. Pankina, P. A. Chernavskii, Yu. A. Krylova, and V. V. Lunin, Kinet. Catal. 48, 567 (2007).
P. A. Chernavskii, G. V. Pankina, R. V. Kazantsev, and O. L. Eliseev, ChemCatChem 10, 1 (2018).
J. M. Gracia, F. F. Prinsloo, and J. W. Niemantsverdriet, Catal. Lett. 133, 257 (2009).
E. de Smit, F. Cinquini, A. M. Beale, et al., J. Am. Chem. Soc. 132, 14928 (2010).
J.-S. Girardon, A. S. Lermontov, L. Gengembre, et al., J. Catal. 230, 339 (2005).
K. Jalama, N. J. Coville, H. Xiong, et al., Appl. Catal., A 395, 1 (2011).
G. V. Pankina, P. A. Chernavskii, A. S. Lermontov, and V. V. Lunin, Pet. Chem. 42, 217 (2002).
M. Rahmati, B. Huang, M. K. Mortensen, et al., J. Catal. 359, 92 (2018).
S. Barradas, E. A. Caricato, P. J. van Berge, and J. van de Loosdrecht, Stud. Surf. Sci. Catal. 143, 55 (2000).
H. Kolbel and M. Ralek, Catal. Rev. Eng. 21, 225 (1980).
A. Taylor, An Introduction to X-ray Metallography (Springer, New York, 1945).
A. Davydov, Molecular Spectroscopy of Oxide Catalyst Surfaces (Wiley, New York, 2003).
C. Angell and P. C. Schaffer, J. Phys. Chem. 70, 1413 (1966).
D. Ballivet-Tkatchenko and G. Coudurier, Inorg. Chem. 18, 558 (1979).
J. Couble and D. Bianchi, Appl. Catal. A 409–410, 28 (2011).
M. F. Fellah, J. Phys. Chem. C 115, 1940 (2011).
M. Mihaylov, E. Ivanova, K. Chakarova, et al., Appl. Catal. A 391, 3 (2011).
A. F. H. Wielers, A. J. H. M. Kock, C. E. C. A. Hop, et al., J. Catal. 117, 1 (1989).
D. Bianchi, T. Chafik, M. Khalfallah, and S. J. Teichner, Appl. Catal. A 105, 223 (1993).
A. A. Davydov, M. L. Shepot’ko, and A. A. Budieva, Kinet. Katal. 35, 299 (1994).
ACKNOWLEDGMENTS
The authors are grateful to Prof. P.A. Chernavsky for his continuing interest in our work and his valuable comments, and to A.A. Malyshev (Hamburg) for kindly providing magnesium aluminum spinel samples.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by E. Boltukhina
Rights and permissions
About this article
Cite this article
Kharlanov, A.N., Pankina, G.V. & Lunin, V.V. Physicochemical Properties of Potassium-Promoted Fe-Containing Catalysts for the Hydrogenation of CO over Magnesium Aluminum Spinels: IR Spectroscopy. Russ. J. Phys. Chem. 93, 2356–2364 (2019). https://doi.org/10.1134/S0036024419120136
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036024419120136