The continuous synthesis of Pd supported on Fe3O4 nanoparticles: a highly effective and magnetic catalyst for CO oxidation
| Autor: | Kendra W. Brinkley, B. Frank Gupton, Sherif Moussa, M. Samy El-Shall, Hany A. Elazab |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Health Toxicology and Mutagenesis General Chemical Engineering co catalytic oxidation microwave heating 02 engineering and technology 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering Catalysis solid supported catalysis continuous flow chemistry Environmental Chemistry QD1-999 Renewable Energy Sustainability and the Environment magnetite (fe3o4) pd-nanoparticles 021001 nanoscience & nanotechnology 0104 chemical sciences Chemistry Fuel Technology Chemical engineering Pd nanoparticles Microwave heating hydrazine hydrate 0210 nano-technology Fe3o4 nanoparticles |
| Zdroj: | Green Processing and Synthesis, Vol 6, Iss 4, Pp 413-424 (2017) |
| ISSN: | 2191-9550 2191-9542 |
| DOI: | 10.1515/gps-2016-0168 |
| Popis: | We report a facile approach used for the simultaneous reduction and synthesis of a well dispersed magnetically separable palladium nanoparticle supported on magnetite (Pd/Fe3O4 nanoparticles) via continuous flow synthesis under microwave irradiation conditions, using a Wave Craft’s microwave flow reactor commercially known as ArrheniusOne, which can act as a unique process for the synthesis of highly active catalysts for carbon monoxide (CO) oxidation catalysis. The prepared catalysts are magnetic, which is an advantage in the separation process of the catalyst from the reaction medium. The separation process is achieved by applying a strong external magnetic field which makes the separation process easy, reliable, and environmentally friendly. Hydrazine hydrate was used as the reducing agent under continuous flow reaction conditions. The investigated catalysis data revealed that palladium supported on iron oxide catalyst synthesized by continuous flow microwave irradiation conditions showed remarkable high catalytic activity towards CO oxidation compared to the ones that were prepared by batch reaction conditions under the same experimental conditions. This could be attributed to the high degree of dispersion and concentration ratio of the Pd nanoparticles dispersed on the surface of magnetite (Fe3O4) with a small particle size of 5–8 nm due to the effective microwave-assisted reduction method under continuous flow conditions. These nanoparticles were further characterized by a variety of spectroscopic techniques including X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and transmission electron microscopy (TEM). |
| Databáze: | OpenAIRE |
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