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Open AccessArticle

Binary Oxides Prepared by Microwave-Assisted Solution Combustion: Synthesis, Characterization and Catalytic Activity

1
Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
2
Université de Strasbourg, F-67000 Strasbourg, France
3
Laboratoire de Chimie Industrielle, Ecole Nationale d’Ingénieurs de Sfax, Université de Sfax, Sfax BP1173, Tunisie
*
Author to whom correspondence should be addressed.
Materials 2019, 12(6), 910; https://doi.org/10.3390/ma12060910
Received: 25 February 2019 / Revised: 11 March 2019 / Accepted: 15 March 2019 / Published: 19 March 2019
(This article belongs to the Special Issue Materials for Clean Processes in Energy)
Three different alumina-based Ni, Cu, Co oxide catalysts with metal loading of 10 wt %, and labeled 10Ni–Al, 10Co–Al and 10Cu–Al, were prepared by microwave-assisted solution combustion. Their morphological, structural and surface properties were deeply investigated by complementary physico-chemical techniques. Finally, the three materials were tested in CO oxidation used as test reaction for comparing their catalytic performance. The 10Cu–Al catalyst was constituted of copper oxide phase, while the 10Ni–Al and 10Co–Al catalysts showed the presence of “spinels” phases on the surface. The well-crystallized copper oxide phase in the 10Cu–Al catalyst, obtained by microwave synthesis, allowed for obtaining very high catalytic activity. With a CO conversion of 100% at 225 °C, the copper containing catalyst showed a much higher activity than that usually measured for catalytic materials of similar composition, thus representing a promising alternative for oxidation processes. View Full-Text
Keywords: alumina-based Ni; Cu; Co-oxide catalysts; microwave-assisted solution combustion; CO oxidation; catalytic activity alumina-based Ni; Cu; Co-oxide catalysts; microwave-assisted solution combustion; CO oxidation; catalytic activity
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MDPI and ACS Style

Frikha, K.; Limousy, L.; Bouaziz, J.; Chaari, K.; Josien, L.; Nouali, H.; Michelin, L.; Vidal, L.; Hajjar-Garreau, S.; Bennici, S. Binary Oxides Prepared by Microwave-Assisted Solution Combustion: Synthesis, Characterization and Catalytic Activity. Materials 2019, 12, 910.

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