Formation of carbon nanofibers from supported Pt catalysts through catalytic chemical vapor deposition from acetylene / Qilong Chen in Industrial & engineering chemistry research, Vol. 50 N° 15 (Août 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp. 9034–9042 Titre : Formation of carbon nanofibers from supported Pt catalysts through catalytic chemical vapor deposition from acetylene Type de document : texte imprimé Auteurs : Qilong Chen, Auteur ; Jia Wang, Auteur ; Feng Li, Auteur Année de publication : 2011 Article en page(s) : pp. 9034–9042 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Chemical vapor deposition Catalytic reaction Catalyst Résumé : Carbon nanofibers (CNFs) were synthesized by catalytic chemical vapor deposition from acetylene from a series of supported Pt catalysts derived from Pt-containing Mg–Al layered double hydroxide precursors. The materials were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, temperature programmed reduction, low-temperature N2 adsorption–desorption experiments, X-ray photoelectron spectroscopy, and Raman spectroscopy. The effects of reaction temperature and Pt content on the morphologies and microstructures of CNFs were investigated. The results revealed that the reaction temperature of 600 °C was appropriate for the growth of uniform CNFs with regular shape. Furthermore, the structural defects and the diameters of CNFs were reduced with the increasing Pt content, which is attributable to the high dispersion of smaller Pt nanoparticles as well as the quick deposition rate of carbon atoms on active metal particles. The present work developed an additional approach to optimize the growth of CNFs. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24395850 [article] Formation of carbon nanofibers from supported Pt catalysts through catalytic chemical vapor deposition from acetylene [texte imprimé] / Qilong Chen, Auteur ; Jia Wang, Auteur ; Feng Li, Auteur . - 2011 . - pp. 9034–9042. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp. 9034–9042 Mots-clés : Chemical vapor deposition Catalytic reaction Catalyst Résumé : Carbon nanofibers (CNFs) were synthesized by catalytic chemical vapor deposition from acetylene from a series of supported Pt catalysts derived from Pt-containing Mg–Al layered double hydroxide precursors. The materials were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, temperature programmed reduction, low-temperature N2 adsorption–desorption experiments, X-ray photoelectron spectroscopy, and Raman spectroscopy. The effects of reaction temperature and Pt content on the morphologies and microstructures of CNFs were investigated. The results revealed that the reaction temperature of 600 °C was appropriate for the growth of uniform CNFs with regular shape. Furthermore, the structural defects and the diameters of CNFs were reduced with the increasing Pt content, which is attributable to the high dispersion of smaller Pt nanoparticles as well as the quick deposition rate of carbon atoms on active metal particles. The present work developed an additional approach to optimize the growth of CNFs. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24395850

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