2026-05-28T00:20:34Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/304732026-02-03T11:14:45Zcom_10630_2254col_10630_37953

Ternero-Hidalgo, Juan José Guerrero-Pérez, María Olga Rodríguez-Mirasol, José Cordero-Alcántara, Tomás Bañares, Miguel Ángel Portela, Raquel Bazin, Philippe Cleo, Guillaume Daturi, Marco 2024-02-15T12:33:24Z 2024-02-15T12:33:24Z 2020-03-10 Juan José Ternero-Hidalgo, María Olga Guerrero-Pérez, José Rodríguez-Mirasol, Tomás Cordero, Miguel A. Bañares, Raquel Portela, Philippe Bazin, Guillaume Clet, and Marco Daturi Analytical Chemistry 2020 92 (7), 5100-5106 https://hdl.handle.net/10630/30473 10.1021/acs.analchem.9b05473 Raman and transmission FTIR spectroscopic techniques have been coupled in a new homemade reactor-cell designed in a joint CSIC–LCS collaboration. The setup is easily adapted to any FTIR and fiber-coupled Raman spectrometers and gas analysis techniques. It allows for simultaneous operando FTIR and Raman spectroscopic measurement, which provide complementary characterization of adsorbed species, reaction intermediates, and structural properties of the catalyst. This system was validated with the study of vanadium-based catalysts during propane oxydehydrogenation (ODH). The combined use of both spectroscopies with gas analysis techniques to measure the activity contributes to the understanding of propane ODH and the identification of the role of different oxygen species bound to vanadium sites. For example, the simultaneous characterization of the catalyst under the same conditions by IR and Raman confirms that the V═O mode has the same frequency in both spectroscopies and that bridging oxygen sites (V—O—V, V—O—Zr) present higher activity than terminal V═O bonds. These results demonstrate the high potential of the new simultaneous transmission IR–Raman operando rig to correlate the activity and the structure of catalysts, thus assisting the rational design of catalytic processes. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Espectroscopía Raman Catalizadores Operando Reactor-Cell with Simultaneous Transmission FTIR and Raman Characterization (IRRaman) for the Study of Gas-Phase Reactions with Solid Catalysts. journal article