Effect of RhOx/CeO2 Calcination on Metal-Support Interaction and Catalytic Activity for N2O Decomposition
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| Title: | Effect of RhOx/CeO2 Calcination on Metal-Support Interaction and Catalytic Activity for N2O Decomposition |
|---|---|
| Authors: | Rico Pérez, Verónica | Bueno López, Agustín |
| Research Group/s: | Materiales Carbonosos y Medio Ambiente |
| Center, Department or Service: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
| Keywords: | N2O decomposition | Rh | Ceria | Rh-ceria interaction | Nanoparticles | Subnanoparticles | Nitric acid plant | Ceria catalyst |
| Knowledge Area: | Química Inorgánica |
| Issue Date: | 22-Sep-2014 |
| Publisher: | MDPI |
| Citation: | Rico-Pérez V, Bueno-López A. Effect of RhOx/CeO2 Calcination on Metal-Support Interaction and Catalytic Activity for N2O Decomposition. Applied Sciences. 2014; 4(3):468-481. doi:10.3390/app4030468 |
| Abstract: | The effect of the calcination conditions on the catalytic activity for N2O decomposition of 2.5% RhOx/CeO2 catalysts has been investigated. Ramp and flash calcinations have been studied (starting calcinations at 25 or 250/350 °C, respectively) both for cerium nitrate and ceria-impregnated rhodium nitrate decomposition. The cerium nitrate calcination ramp has neither an effect on the physico-chemical properties of ceria, observed by XRD, Raman spectroscopy and N2 adsorption, nor an effect on the catalysts performance for N2O decomposition. On the contrary, flash calcination of rhodium nitrate improved the catalytic activity for N2O decomposition. This is attributed to the smaller size of RhOx nanoparticles obtained (smaller than 1 nm) which allow a higher rhodium oxide-ceria interface, favoring the reducibility of the ceria surface and stabilizing the RhOx species under reaction conditions. |
| Sponsor: | The authors thank the financial support of Generalitat Valenciana (Project Prometeo 2009/047), the Spanish Ministry of Economy and Competitiveness (Project CTQ2012-30703), and the UE (FEDER funding). |
| URI: | http://hdl.handle.net/10045/44727 |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app4030468 |
| Language: | eng |
| Type: | info:eu-repo/semantics/article |
| Rights: | © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
| Peer Review: | si |
| Publisher version: | http://dx.doi.org/10.3390/app4030468 |
| Appears in Collections: | INV - MCMA - Artículos de Revistas |
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| File | Description | Size | Format | |
|---|---|---|---|---|
 2014_Rico_Bueno_ApplSci.pdf | 1,89 MB | Adobe PDF | Open Preview | |
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