NiMo/C Used as Magnetic Support for SILP Catalysts |
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| Authors: | Evelisy C. O. Nassor Raquel V. Mambrini Eduardo N. dos Santos Flávia C. C. Moura Maria Helena Araujo |
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| Affiliation: | 1.Instituto Federal de Minas Gerais,Piumhi,Brazil;2.Departamento de Química,Centro Federal de Educa??o Tecnológica de Minas Gerais,Belo Horizonte,Brazil;3.Departamento de Química, Instituto de Ciências Exatas,Universidade Federal de Minas Gerais,Belo Horizonte,Brazil |
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| Abstract: | In this work, supported ionic liquid (IL) phases catalysts were prepared based on Pd dispersed in IL phases supported on magnetic particles of nickel/molybdenum covered with carbon (NiMo/C). The magnetic support was prepared via CVD method at 800 °C. XRD analysis showed the phases of metallic nickel and molybdenum carbide. The presence of carbon in these materials was confirmed by TEM/EDS and thermogravimetric analysis (TG) analysis. Pd particles were dispersed in 1 and 2.5 wt% of the IL 1-butyl-3-methylimidazolium tetrafluoroborate (BMIm·BF4), which were immobilized on the support surface via impregnation method. TG analysis shows a weight loss between 300 and 420 °C attributed to the BMIm·BF4, confirming the existence of IL on the support surface. The prepared materials were investigated in hydrogenations reactions of 1,5-cyclooctadiene and nitrobenzene, and the influence of IL on the activity and selectivity of these catalysts were observed. These materials have great potential for catalysis applications, because they bring together the advantages of the IL in the catalyst surface and the facility of magnetic materials separation. |
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