Naphthalene hydrogenation using Rh/Fe2O3-TiO2 magnetic catalysts
| Autor: | Durvel de la Cruz-Romero, Hermicenda Pérez-Vidal, Gilberto Torres-Torres, Miroslava Barrera-Salgado, Rosendo López-González, I. Cuauhtémoc-López, Adriana Jiménez-Vázquez, Luis Alberto Estudillo-Wong |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Hydrogen Iron oxide chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry X-ray photoelectron spectroscopy Transmission electron microscopy Temperature-programmed reduction 0210 nano-technology Naphthalene Nuclear chemistry |
| Zdroj: | Catalysis Today. 360:176-184 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2019.11.001 |
| Popis: | Two magnetic catalysts were synthesized by a modification route and applied into the naphthalene hydrogenation at 553 K. For this propose, Fe2O3-TiO2 support and Rh/Fe2O3-TiO2 catalyst were characterized by X-ray diffraction (XRD), N2-physisorption, Vibrating Sample Magnetometer (VSM), Temperature Programmed Reduction of hydrogen (TPR), X-ray Photoelectron Spectroscopy (XPS) and High-Resolution Transmission Electron Microscopy (TEM) techniques. Based on the results, a multiple heterojunction was formed with a stick and spherical particles, where the morphology produced crystallite-size and pore-average size in the interval from 9 nm to 23 nm and 15 nm, respectively. The Rh/Fe2O3-TiO2 catalyst was selective in trans-decalin and increased its performance from 80 to 100% of conversion at 1 h. After six reactions cycles, this catalyst reached percentages conversion close to 85%. This phenomenon was promoted by 1) the presence of Rh and, 2) the adsorption of hydrogen in the surface of TiO2, which enabled Fe3+ sites and thus increasing the catalytic effect. |
| Databáze: | OpenAIRE |
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