Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/1941
Type: Artigo de periódico
Title: Direct Access to Oxidation-Resistant Nickel Catalysts through an Organometallic Precursor
Author: Costa, Natalia J. S.
Jardim, Renato F.
Masunaga, Sueli H.
Zanchet, Daniela
Landers, Richard
Rossi, Liane M.
Abstract: The synthesis of nickel catalysts for industrial applications is relatively simple; however, nickel oxidation is usually difficult to avoid, which makes it challenging to optimize catalytic activities, metal loadings, and high-temperature activation steps. A robust, oxidation-resistant and very active nickel catalyst was prepared by controlled decomposition of the organometallic precursor [bis(1,5-cyclooctadiene)nickel(0)], Ni(COD)(2), over silica-coated magnetite (Fe3O4@SiO2). The sample is mostly Ni(0), and surface oxidized species formed after exposure to air are easily reduced in situ during hydrogenation of cyclohexene under mild conditions recovering the initial activity. This unique behavior may benefit several other reactions that are likely to proceed via Ni heterogeneous catalysis.
Subject: nickel nanoparticles
organometallic
Ni(COD)(2)
hydrogenation
magnetic separation
Editor: American Chemical Society 
Citation: ACS Catalysis. American Chemical Society , v.2, n.6, p.925-929, 2012
Rights: fechado
Identifier DOI: 10.1021/cs200609e
Date Issue: 2012
Appears in Collections:IQ - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.