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Titolo:
The first preparation of silicon carbide nanotubes by shape memory synthesis and their catalytic potential
Autore:
Pham-Huu, C; Keller, N; Ehret, G; Ledoux, MJ;
Indirizzi:
Univ Louis Pasteur Strasbourg 1, Sous Unite Chim Mat Catalyt, Lab Mat Surfaces & Proc Catalyse, ECPM,UMR7515,CNRS, F-67087 Strasbourg, France Univ Louis Pasteur Strasbourg 1 Strasbourg France F-67087 sbourg, France Inst Phys & Chim Mat, IPCMS, UMR 1504, CNRS, Strasbourg, France Inst Phys & Chim Mat Strasbourg France R 1504, CNRS, Strasbourg, France
Titolo Testata:
JOURNAL OF CATALYSIS
fascicolo: 2, volume: 200, anno: 2001,
pagine: 400 - 410
SICI:
0021-9517(20010610)200:2<400:TFPOSC>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
NANOFIBER SUPPORTED NICKEL; WALLED CARBON NANOTUBES; SELECTIVE OXIDATION; HYDROGEN; TEMPERATURE; STORAGE; H2S;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Ledoux, MJ Univ Louis Pasteur Strasbourg 1, Sous Unite Chim Mat Catalyt, Lab Mat Surfaces & Proc Catalyse, ECPM,UMR7515,CNRS, 25 Rue Becquerel, F-67087 Strasbourg, France Univ Louis Pasteur Strasbourg 1 25 Rue Becquerel Strasbourg France F-67087
Citazione:
C. Pham-Huu et al., "The first preparation of silicon carbide nanotubes by shape memory synthesis and their catalytic potential", J CATALYSIS, 200(2), 2001, pp. 400-410

Abstract

Two main innovations are presented in this article. (1) The first reproducible synthesis of silicon carbide nanotubes of different internal and external diameters, The method used, the shape memory synthesis, is based on thegas-solid reaction between a vapor of SiO and nanotubes of carbon for the high diameters, and nanofibers of carbon for the small diameters. (2) A significant increase in the rate of a catalytic reaction (oxidation of H2S in S) probably due to a microscopic increase of the partial pressure of H2S inside the nanotubes, produced by condensation and microcapillarity, while the macroscopic partial pressure outside the tubes remains unchanged. This phenomenon could be extended to many other reactions, with polar gaseous reactants which are prone to condensation by capillarity at the usual temperatures of catalytic reaction, or with liquid phase reaction by an overconcentration of one of the reactants inside the tubes. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 05:08:47