Reduction of nitric oxide by carbon monoxide over NiO, CuO, and ZnO catalysts
Por:
Flores-Sanchez L.A., Quintana-Melgoza J.M., Olivas A., Avalos-Borja M.
Publicada:
1 abr 2015
Resumen:
NiO, CuO and ZnO catalysts were synthesized by thermal decomposition
using Ni, Cu, and Zn salts as precursors. The materials were
characterized by X-ray diffraction, energy dispersive spectroscopy,
scanning electron microscopy, crystal size and surface area
measurements. The catalysts were tested for NO reduction with CO. The NO
reduction rate was in the range of (4.3 x 10(-12)-1.3 x 10(-8)) mol
s(-1) g(-1), and its activation energy was within an interval of
(41.8-83.7) kJ mol(-1) K-1. The catalysts showed the following
decreasing order of activity: CuO > NiO > ZnO. Catalyst CuO is a better
catalyst than NiO and ZnO and achieved 100 % NO conversion at 275 A
degrees C with 94 % selectivity to N-2.
Filiaciones:
Flores-Sanchez L.A.:
UABC, Fac Ciencias Quim & Ingn, Tijuana 22390, BC, Mexico
UABC, Parque Industrial Internacional Tijuana, Tijuana, B.C. CP. 22390, Mexico
Quintana-Melgoza J.M.:
UABC, Fac Ciencias Quim & Ingn, Tijuana 22390, BC, Mexico
UABC, Parque Industrial Internacional Tijuana, Tijuana, B.C. CP. 22390, Mexico
Olivas A.:
UNAM, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Centro de Nanociencias y Nanotecnología - UNAM, Km. 107 Carretera Tijuana-Ensenada, Ensenada, B.C. CP. 22860, Mexico
Avalos-Borja M.:
UNAM, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
Centro de Nanociencias y Nanotecnología - UNAM, Km. 107 Carretera Tijuana-Ensenada, Ensenada, B.C. CP. 22860, Mexico
División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, S.L.P., México
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