Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation Method
Ag–CeO<sub>2</sub> catalysts (20 mol % Ag) were synthesized using different techniques (co-precipitation, impregnation, and impregnation of pre-reduced ceria), characterized by XRD, N<sub>2</sub> sorption, TEM, H<sub>2</sub>-TPR methods, and probed in room-tempera...
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MDPI AG
2020-05-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/5/580 |
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| author | Mariia Chernykh Natalia Mikheeva Vladimir Zaikovskii Mikhail Salaev Leonarda F. Liotta Grigory Mamontov |
| author_facet | Mariia Chernykh Natalia Mikheeva Vladimir Zaikovskii Mikhail Salaev Leonarda F. Liotta Grigory Mamontov |
| author_sort | Mariia Chernykh |
| collection | DOAJ |
| description | Ag–CeO<sub>2</sub> catalysts (20 mol % Ag) were synthesized using different techniques (co-precipitation, impregnation, and impregnation of pre-reduced ceria), characterized by XRD, N<sub>2</sub> sorption, TEM, H<sub>2</sub>-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<sup>−1</sup>). |
| first_indexed | 2024-03-10T19:39:20Z |
| format | Article |
| id | doaj.art-168c454f2199417bb6e0a01c1c5662bf |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T19:39:20Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-168c454f2199417bb6e0a01c1c5662bf2023-11-20T01:20:18ZengMDPI AGCatalysts2073-43442020-05-0110558010.3390/catal10050580Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation MethodMariia Chernykh0Natalia Mikheeva1Vladimir Zaikovskii2Mikhail Salaev3Leonarda F. Liotta4Grigory Mamontov5Laboratory of Catalytic Research, Tomsk State University, 634050 Tomsk, RussiaLaboratory of Catalytic Research, Tomsk State University, 634050 Tomsk, RussiaLaboratory of Structural Research Methods, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, RussiaLaboratory of Catalytic Research, Tomsk State University, 634050 Tomsk, RussiaInstitute for the Study of Nanostructured Materials (ISMN), (Italian) National Research Council (CNR), Via Ugo La Malfa 153, 90146 Palermo, ItalyLaboratory of Catalytic Research, Tomsk State University, 634050 Tomsk, RussiaAg–CeO<sub>2</sub> catalysts (20 mol % Ag) were synthesized using different techniques (co-precipitation, impregnation, and impregnation of pre-reduced ceria), characterized by XRD, N<sub>2</sub> sorption, TEM, H<sub>2</sub>-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<sup>−1</sup>).https://www.mdpi.com/2073-4344/10/5/580Ag–CeO<sub>2</sub> catalystsnitrophenol reductionmild conditionsmetal–support interactioncatalysts preparation |
| spellingShingle | Mariia Chernykh Natalia Mikheeva Vladimir Zaikovskii Mikhail Salaev Leonarda F. Liotta Grigory Mamontov Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation Method Catalysts Ag–CeO<sub>2</sub> catalysts nitrophenol reduction mild conditions metal–support interaction catalysts preparation |
| title | Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation Method |
| title_full | Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation Method |
| title_fullStr | Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation Method |
| title_full_unstemmed | Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation Method |
| title_short | Room-Temperature Nitrophenol Reduction over Ag–CeO<sub>2</sub> Catalysts: The Role of Catalyst Preparation Method |
| title_sort | room temperature nitrophenol reduction over ag ceo sub 2 sub catalysts the role of catalyst preparation method |
| topic | Ag–CeO<sub>2</sub> catalysts nitrophenol reduction mild conditions metal–support interaction catalysts preparation |
| url | https://www.mdpi.com/2073-4344/10/5/580 |
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