Bimetallic platinum/iridium modified mesoporous catalysts applied in the hydrogenation of HMF
| Autor: | Juliana M. Juárez, Jaime Mazarío, Marcelo Eduardo Domine, Andrea R. Beltramone, Brenda C. Ledesma |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
09.- Desarrollar infraestructuras resilientes promover la industrialización inclusiva y sostenible y fomentar la innovación chemistry.chemical_element 5-hydroximethylfurfural 02 engineering and technology Iridium 010402 general chemistry 01 natural sciences Catalysis Metal X-ray photoelectron spectroscopy 13.- Tomar medidas urgentes para combatir el cambio climático y sus efectos Bimetallic strip Platinum General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences 12.- Garantizar las pautas de consumo y de producción sostenibles SBA-15 chemistry Chemical engineering visual_art visual_art.visual_art_medium 2 5-dimethylfuran 0210 nano-technology Selectivity Mesoporous material Mesoporous carbon |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Digital.CSIC. Repositorio Institucional del CSIC |
| ISSN: | 0920-5861 1122-0120 |
| DOI: | 10.1016/j.cattod.2019.06.037 |
| Popis: | [EN] Catalytic transformation of 5-hydroxymethylfurfural (HMF) to produce 2,5-dimethylfuran (2,5-DMF) was studied over bimetallic (PtIr) and monometallic (Pt) catalysts supported on CMK-3 and SBA-15 mesoporous materials. The optimum temperature and hydrogen pressure for the maximum production of 2,5-DMF were 120 degrees C and 15 atm, respectively. Increases in temperature and pressure decreased the selectivity to 2,5-DMF. The catalysts were broadly characterized by different techniques, such as XRD, N-2-isotherms, XPS, TPR, TEM and NH3-TPD. It was found that the metallic particles were well reduced and highly dispersed on the surface of supports having large surface area and narrow pore size distribution. The PtIr alloy species catalytic sites were very active and selective towards the formation of the desired 2,5-DMF. PtIr-CMK-3 catalyst showed an excellent activity, selectivity and stability to be applied in this process. NANOTEC, CONICET, Universidad Tecnologica Nacional, Maestro Lopez y Cruz Roja Argentina. We acknowledge the financial support provided by CONICET Argentina, PIP CONICET11220120100218CO. 2014-2018. J.M. and M.E.D thanks Spanish Government financial support (CTQ2015-67592 and PGC2018-097277-B-I00). |
| Databáze: | OpenAIRE |
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