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Open AccessArticle

Room-Temperature Nitrophenol Reduction over Ag–CeO2 Catalysts: The Role of Catalyst Preparation Method

1
Laboratory of Catalytic Research, Tomsk State University, 634050 Tomsk, Russia
2
Laboratory of Structural Research Methods, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia
3
Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
4
Institute for the Study of Nanostructured Materials (ISMN), (Italian) National Research Council (CNR), Via Ugo La Malfa 153, 90146 Palermo, Italy
*
Author to whom correspondence should be addressed.
Catalysts 2020, 10(5), 580; https://doi.org/10.3390/catal10050580
Received: 27 April 2020 / Revised: 19 May 2020 / Accepted: 20 May 2020 / Published: 21 May 2020
Ag–CeO2 catalysts (20 mol % Ag) were synthesized using different techniques (co-precipitation, impregnation, and impregnation of pre-reduced ceria), characterized by XRD, N2 sorption, TEM, H2-TPR methods, and probed in room-temperature p-nitrophenol reduction into p-aminophenol in aqueous solution at atmospheric pressure. The catalyst preparation method was found to determine the textural characteristics, the oxidation state and distribution of silver and, hence, the catalytic activity in the p-nitrophenol reduction. The impregnation technique was the most favorable for the formation over the ceria surface of highly dispersed silver species that are active in the p-nitrophenol reduction (the first-order rate constant k = 0.656 min−1). View Full-Text
Keywords: Ag–CeO2 catalysts; nitrophenol reduction; mild conditions; metal–support interaction; catalysts preparation Ag–CeO2 catalysts; nitrophenol reduction; mild conditions; metal–support interaction; catalysts preparation
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MDPI and ACS Style

Chernykh, M.; Mikheeva, N.; Zaikovskii, V.; Salaev, M.; Liotta, L.F.; Mamontov, G. Room-Temperature Nitrophenol Reduction over Ag–CeO2 Catalysts: The Role of Catalyst Preparation Method. Catalysts 2020, 10, 580.

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