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Titolo:
Carbon nanofiber supported palladium catalyst for liquid-phase reactions -An active and selective catalyst for hydrogenation of cinnamaldehyde into hydrocinnamaldehyde
Autore:
Pham-Huu, C; Keller, N; Ehret, G; Charbonniere, LJ; Ziessel, R; Ledoux, MJ;
Indirizzi:
ULP, ECPM, Lab Mat Surfaces & Proc Catalyse, UMR 7515 CNRS, F-67087 Strasbourg 2, France ULP Strasbourg France 2 yse, UMR 7515 CNRS, F-67087 Strasbourg 2, France ULP, ECPM, UPRES A 7008 CNRS, Lab Chim Electron & Photon Mol, F-67087 Strasbourg, France ULP Strasbourg France F-67087 n & Photon Mol, F-67087 Strasbourg, France ULP, IPCMS, Grp Surface & Interface, F-67037 Strasbourg, France ULP Strasbourg France F-67037 ce & Interface, F-67037 Strasbourg, France
Titolo Testata:
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
fascicolo: 1-2, volume: 170, anno: 2001,
pagine: 155 - 163
SICI:
1381-1169(20010514)170:1-2<155:CNSPCF>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNSATURATED ALDEHYDES; ALPHA,BETA-UNSATURATED ALDEHYDES; NICKEL PARTICLES; NANOTUBES; RUTHENIUM; CROTONALDEHYDE; COMPLEX; RU; DERIVATIVES; BUCKYTUBES;
Keywords:
palladium catalyst; carbon nanofibers; high surface area; cinnamaldehyde hydrogenation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Ledoux, MJ ULP, ECPM, Lab Mat Surfaces & Proc Catalyse, UMR 7515 CNRS, 25 Rue Becquerel, F-67087 Strasbourg 2, France ULP 25 Rue Becquerel Strasbourg France 2 Strasbourg 2, France
Citazione:
C. Pham-Huu et al., "Carbon nanofiber supported palladium catalyst for liquid-phase reactions -An active and selective catalyst for hydrogenation of cinnamaldehyde into hydrocinnamaldehyde", J MOL CAT A, 170(1-2), 2001, pp. 155-163

Abstract

Carbon nanofibers (CNFs) prepared by decomposition of ethane over a Ni/alumina catalyst, are used as support for palladium clusters. The carbon support displays a mean diameter of 40-50 nm, lengths up to several tens of micrometers, as highlighted by transmission electron microscopy (TEM) observations and a specific surface area of about 50 m(2)/g. The spheroidal palladium particles have a relatively homogeneous and sharp size distribution, centered at around 4 nm. This novel Pd/carbon nanofiber catalyst displays unusual catalytic properties and is successfully used in the selective hydrogenation of the C=C bond in cinnamaldehyde at a reaction temperature of around 80 degrees, under continuous hydrogen flowing at atmospheric pressure. The high performances of this novel catalyst in terms of efficiency and selectivity are, respectively, related to the inhibition of the mass-transfer processes over this non-porous material and to peculiar palladium-carbon interactions. It is concluded that the absence of microporosity in the carbon nanofibers favours both the high activity and selectivity which is confirmed by comparison with the commercially available high surface area charcoal supported palladium catalyst. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 19:39:14