Direct Access to Oxidation-Resistant Nickel Catalysts through an Organometallic Precursor
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
29/10/2013
29/10/2013
2012
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| Resumo |
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. FAPESP FAPESP CAPES CAPES CNPq CNPq INCT-Catalise INCTCatalise |
| Identificador |
ACS CATALYSIS, WASHINGTON, v. 2, n. 6, supl. 1, Part 3, pp. 925-929, JUN, 2012 2155-5435 http://www.producao.usp.br/handle/BDPI/36251 10.1021/cs200609e |
| Idioma(s) |
eng |
| Publicador |
AMER CHEMICAL SOC WASHINGTON |
| Relação |
ACS CATALYSIS |
| Direitos |
closedAccess Copyright AMER CHEMICAL SOC |
| Palavras-Chave | #NICKEL NANOPARTICLES #ORGANOMETALLIC #NI(COD)(2) #HYDROGENATION #MAGNETIC SEPARATION #MAGNETIC-PROPERTIES #NIO NANOPARTICLES #RECYCLABLE CATALYSTS #REDUCTION #HYDROGENATION #EFFICIENT #OXIDE #PROMOTER #SILICA #BONDS #CHEMISTRY, PHYSICAL |
| Tipo |
article original article publishedVersion |
