Abstract
The applicability of molecular nitrogen as a probe for the Brønsted and Lewis acid sites of HNaY and HZSM-5 zeolites was studied by Fourier transform IR spectroscopy. The integrated absorption coefficients of bands due to N-N vibrations in complexes with Brønsted and Lewis acid sites were determined. The correlation between the integrated absorption coefficients and the positions of bands due to N-N vibrations in nitrogen interacting with the acid sites of test samples is discussed. We propose using the low-temperature adsorption of nitrogen for express determination of the concentrations of strong Lewis and Brønsted acid sites in zeolites.
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Translated from Kinetika i Kataliz, Vol. 46, No. 1, 2005, pp. 108–114.
Original Russian Text Copyright © 2005 by Malyshev, Paukshtis, Malysheva, Toktarev, Vostrikova.
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Malyshev, M., Paukshtis, E., Malysheva, L. et al. N2 and CO as probe molecules for determining the properties of acid sites on the surface of zeolites. Kinet Catal 46, 100–106 (2005). https://doi.org/10.1007/s10975-005-0055-2
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DOI: https://doi.org/10.1007/s10975-005-0055-2