@Article{LouisGVADGCLP:2005:HiYiSy,
               author = "Louis, Benoit and Gulino, Giuseppe and Vieira, Ricardo and Amadou, 
                         J. and Dintzer, T. and Galvagno, Signonimo and Centi, Gabriele and 
                         Ledoux, Marc-Jaques and Pham-Huu, Cuong",
          affiliation = "{Surfaces et ProceŽdeŽs pour la Catalyse} and {Universita di 
                         Messina} and {European Laboratory of Catalysis and Surface Science 
                         (ELCASS)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "High yield synthesis of multi-walled carbon nanotubes by catalytic 
                         decomposition of ethane over iron supported on alumina catalyst",
              journal = "Catalysis Today",
                 year = "2005",
               volume = "102-103",
                pages = "23--28",
             keywords = "Carbon nanotubes, Multi-walled, Chemical vapour deposition, 
                         Catalytic decomposition of ethane.",
             abstract = "Abstract - Ethane was successfully used as an active and efficient 
                         carbon source in a large scale synthesis of high quality carbon 
                         nanotubes by chemical vapour deposition (CVD) over Fe/Al2O3 
                         catalyst with an iron loading of 20 wt.%. The multi-walled carbon 
                         nanotubes yield approaching 50 g per gram of catalyst per hour at 
                         750 8C, which was among the highest yield reported today in the 
                         open literature. The active phase for growing carbon nanotubes is 
                         a mixture of a metastable iron carbide (Fe3C) and a-Fe which were 
                         formed in situ by the ethane dissociation followed by carbon 
                         diffusion through the starting a-Fe phase. The reaction products 
                         only contained multi-walled carbon nanotubes with very homogeneous 
                         diameters of around 30 nm and lengths up to several hundred 
                         nanometers without any trace of other impurities such as 
                         nanoparticles or amorphous soot. According to the observed results 
                         ethane is an active carbon source for growing multiwalled carbon 
                         nanotubes with high yield and selectivity. The reaction 
                         temperature should be keep 750 8C as synthesis carried out at 800 
                         8C under similar reaction conditions led to the formation of 
                         amorphous soot and carbon nanoparticles mixed with nanotubes.",
                 issn = "0920-5861",
             language = "en",
           targetfile = "high.pdf",
        urlaccessdate = "06 maio 2024"
}