Supercritical CO2 assisted preparation of supported molybdenum phosphide for hydrotreatding catalysis
| Autor: | Cyril Aymonier, Blanca Motos-Pérez, Denis Uzio, Cyril Quilfen |
|---|---|
| Přispěvatelé: | Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), IFP Energies nouvelles (IFPEN), the IFPEN with a postdoctoral contract. Authors are also indebted to the Région Nouvelle Aquitaine for financial support. |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Phosphide Organic Chemistry Inorganic chemistry Nanoparticle chemistry.chemical_element 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Heterogeneous catalysis 01 natural sciences 7. Clean energy Catalysis Supercritical fluid 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound chemistry Molybdenum Physical and Theoretical Chemistry 0210 nano-technology Hydrodesulfurization Incipient wetness impregnation |
| Zdroj: | ChemCatChem ChemCatChem, Wiley, 2017, 9 (12), pp.2352-2357. ⟨10.1002/cctc.201700076⟩ |
| ISSN: | 1867-3899 |
| Popis: | Many studies in literature have reported supported metal phosphides as promising hydrotreating catalysts. The synthesis of highly dispersed metal phosphide nanoparticles is usually achieved tuning various parameters such as the nature of the phosphorous precursor or the reduction protocol. In this study, the alumina supported molybdenum phosphides were prepared following a recently developed method using supercritical fluids (SCFs) technology that comprises several elementary steps: incipient wetness impregnation and ageing, supercritical CO2 flash-drying and transformation, followed by hydrogen reduction. Experimental parameters allowed us modulating main characteristics of catalysts: crystallinity, reducibility, nanoparticles (NPs) mean size and size distribution. High temperature treatments (400°C) in scCO2 media maintain the heteropolyanions structure unlike what is usually observed in conventional treatment under air. Catalytic performances in selective hydrodesulfurization of methyl-3-thiophene, in presence of 2,3-dimethylbut-2-ene, have been assessed and were improved in terms of activity or selectivity compared to MoP and CoMoS reference catalysts, respectively. |
| Databáze: | OpenAIRE |
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