Multi-walled nanotubes are grown by chemical vapor deposition (CVD) in ethane+hydrogen mixture over 20%Fe/SiO2 catalyst, and the influence of ethane and hydrogen space velocities on carbon yield and crystalline quality of the reaction products is systematically investigated. It is found that higher carbon yields are paid with loss of selectivity and consequent worsening of the phase purity of the carbonaceous deposits. The most satisfactory results are achieved by inletting into the reactor a gas mixture, composed by 50% ethane + 50% hydrogen, at ~45 min-1 space velocity.

Yield and quality optimization for MWNT prepared by catalytic CVD

GALVAGNO, Signorino;MILONE, Candida;PISTONE, Alessandro;
2007

Abstract

Multi-walled nanotubes are grown by chemical vapor deposition (CVD) in ethane+hydrogen mixture over 20%Fe/SiO2 catalyst, and the influence of ethane and hydrogen space velocities on carbon yield and crystalline quality of the reaction products is systematically investigated. It is found that higher carbon yields are paid with loss of selectivity and consequent worsening of the phase purity of the carbonaceous deposits. The most satisfactory results are achieved by inletting into the reactor a gas mixture, composed by 50% ethane + 50% hydrogen, at ~45 min-1 space velocity.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/1720874
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact