Magnetic carbon nanofiber networks as support for ionic liquid based catalyst

• Autor(a) principal: Tristão, Juliana C.
• Data de Publicação: 2015
• Outros Autores: Nassor, Evelisy C. O., Oliveira, Henrique S., Moura, Flávia C. C., Santos, Eduardo N. dos, Lago, Rochel M., Araujo, Maria Helena
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: https://doi.org/10.1007/s10562-014-1374-6; http://www.locus.ufv.br/handle/123456789/24171
• topic: SILP catalysts; Hydrogenation; Ionic liquids; Membrane-like effect

In this work, the ionic liquid (IL) 1-hexyl-3-methyl-imidazolium bromide (HMIm.Br) containing Pd suspended nanoparticles was supported on a nanostructured magnetically recoverable carbon nanofiber network. The magnetic material was prepared by a simple reaction of ethanol directly with a nanostructured hematite. SEM, XRD, Mössbauer, Raman, TG/DTA, BET surface area and magnetization analyses suggested that the network is based on carbon nanofibers with carbon coated magnetic Fe nanoparticles. These magnetic networks offer a high exposed carbon fiber area, which has a good interaction with the IL to form a thin layer. Preliminary studies with a Pd dispersed in supported IL as catalyst for the hydrogenation of 1,5-cyclooctadiene showed a membrane effect, which leads to an important increase on the selective hydrogenation of 1,5-cyclooctadiene to cyclooctene.