CO Hydrogenation on Cobalt-Based Catalysts: Tin Poisoning Unravels CO in Hollow Sites as a Main Surface Intermediate
| Autor: | D. Lorito, Laurence Burel, Anaëlle Paredes-Nunez, Yves Schuurman, Frederic Meunier, Nolven Guilhaume, Debora Motta-Meira, Giovanni Agostini |
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| Přispěvatelé: | Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IRCELYON-Catalyse Hétérogène pour la Transition Energétique (CATREN), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), IRCELYON-Microscopie (MICROSCOPIE), European Synchroton Radiation Facility [Grenoble] (ESRF), IRCELYON-Ingéniérie, du matériau au réacteur (ING) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element Reaction intermediate 010402 general chemistry Heterogeneous catalysis Photochemistry 01 natural sciences Catalysis Methane carbon monoxide chemistry.chemical_compound tin 010405 organic chemistry General Medicine General Chemistry [CHIM.CATA]Chemical Sciences/Catalysis equipment and supplies Decomposition cobalt Fischer-Tropsch reaction 0104 chemical sciences heterogeneous catalysis chemistry Tin Cobalt Carbon monoxide |
| Zdroj: | Angewandte Chemie International Edition Angewandte Chemie International Edition, Wiley-VCH Verlag, 2018, 57 (2), pp.547-550. ⟨10.1002/anie.201710301⟩ |
| ISSN: | 1433-7851 1521-3773 |
| DOI: | 10.1002/anie.201710301⟩ |
| Popis: | International audience; Site poisoning is a powerful method to unravel the nature of active sites or reaction intermediates. The nature of the intermediates involved in the hydrogenation of CO was unraveled by poisoning alumina-supported cobalt catalysts with various concentrations of tin. The rate of formation of the main reaction products (methane and propylene) was found to be proportional to the concentration of multi-bonded CO, likely located in hollow sites. The specific rate of decomposition of these species was sufficient to account for the formation of the main products. These hollow-CO are proposed to be main reaction intermediates in the hydrogenation of CO under the reaction conditions used here, while linear CO are mostly spectators. |
| Databáze: | OpenAIRE |
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