Fe/MCM-41 sylilated catalyst: structural changes determination during the Fischer–Tropsch reaction
| Autor: | N. A. Fellenz, Jose Fernando Bengoa, Leonardo Andrés Cano, Ana María Álvarez, M.V. Cagnoli, Sergio Gustavo Marchetti, N.G. Gallegos |
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| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Nuclear and High Energy Physics Chemistry Inorganic chemistry Infrared spectroscopy Fischer–Tropsch process Condensed Matter Physics Atomic and Molecular Physics and Optics Water-gas shift reaction Catalysis Adsorption Hydrocarbon MCM-41 Mössbauer spectroscopy Physical and Theoretical Chemistry |
| Zdroj: | Hyperfine Interactions. 195:5-13 |
| ISSN: | 1572-9540 0304-3843 |
| DOI: | 10.1007/s10751-009-0094-6 |
| Popis: | Two Fe/MCM-41 systems, one of them sylilated, were obtained to be used as catalysts in Fischer–Tropsch reaction. They have more than 90% of the iron species located inside the support channels, leading to a narrow crystal size distribution accessible to reactive gases. The samples were characterized by X-ray diffraction, atomic absorption spectroscopy, N2 adsorption, Mossbauer spectroscopy and Fourier transformer infrared spectroscopy. Mossbauer spectroscopy allowed us to demonstrate that the catalytic active species were the same in both catalysts. The only difference between them was the surface hydrophobicity, which decreases the “water gas shift reaction” in the sylilated catalyst. Besides, this solid is more active for hydrocarbon production, with a lower methane yield. |
| Databáze: | OpenAIRE |
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