Influence of the Valence of Iron on the NO Reduction by CO over Cu-Fe-Mordenite
Por:
Kotolevich, Yulia, Zepeda-Partida, Trino, Yocupicio-Gaxiola, Rosario, Antunez-Garcia, Joel, Pelaez, Luis, Avalos-Borja, Miguel, Vazquez-Salas, Pedro Jovanni, Fuentes-Moyado, Sergio, Petranovskii, Vitalii
Publicada:
1 mar 2023
Resumen:
A comprehensive study of the catalytic properties of the copper-iron
binary system supported on mordenite, depending on the iron
valence-CuFe2MOR and CuFe3MOR-was carried out, and redox ability has
been considered as a decisive factor in determining catalytic
efficiency. Acidity was studied by TPD-NH3, DRIFT-OH, and DRT methods.
The total acidity of both samples was high. The Bronsted acidity is
similar for both bimetallic samples and is explained by the acidity of
zeolite; Lewis acidity varies greatly and depends on the exchange
cations. A screening DRIFT study of CO and NO has shown redox capacity
and demonstrated a potential for using these materials as catalysts for
ambient protection. CuFe2MOR demonstrated stable Cu and Fe species,
while CuFe3MOR showed redox dynamic species. As expected, CuFe3MOR
displayed higher catalytic performance in NO reduction via CO oxidation,
because of the easily reduced intermediate NO-complex adsorbed on the
metallic Cu and Fe sites, which were observed through in situ DRIFT
study.
Filiaciones:
Kotolevich, Yulia:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Zepeda-Partida, Trino:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Yocupicio-Gaxiola, Rosario:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Inst Tecnol Super Guasave, Ejido Burrioncito 81149, Mexico
Antunez-Garcia, Joel:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Pelaez, Luis:
Fleet Complete, Variable Capital Ltd Liabil Co, Mexico City 11320, DF, Mexico
Avalos-Borja, Miguel:
Inst Potosino Invest Cient & Tecnol, Div Mat Avanzados, San Luis Potosi 78216, San Luis Potosi, Mexico
Vazquez-Salas, Pedro Jovanni:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Fuentes-Moyado, Sergio:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Petranovskii, Vitalii:
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
gold
|