✍ Scribed by A.M. Benito; Y. Maniette; E. Muñoz; M.T. Martínez
No coin nor oath required. For personal study only.
Pyrolysis of benzene at ca 6OC~9OO"C over Ni powder generated different types of carbon nanostructures possessing a wide range of morphologies. The effects of temperature and time on carbon nanotubes growth were evaluated. The deposited carbon yield was measured, and the quality of the nanotubes was analyzed by transmission electron microscopy (TEM).
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We describe the implementation of a chemical vapor deposition (CVD) apparatus for the synthesis of carbon nanotubes using ethanol as carbon source and evaluate several substrate materials. Carbon nanotubes are observed to form on various substrates at 750 8C after 20 min of ethanol flow. We examine
The pore structure of the pyrolysis residues of poiy-2.~dimethylphenyleneoxide (PPO) and oxidized PPO were studied by adsorption measurements. The Dubinin method with different gases as adsorbents was used for determination of the micropore volume. In all cases slit-shaped micropores were found, Pre
a b s t r a c t 6.0 wt.% Ni was filled in the channel or deposited on the outer surface of carbon nanotubes (CNTs) by capillarity or deposition to obtain two kinds of catalysts (denoted as Ni-filled-CNTs and Ni-deposited-CNTs, respectively). The catalysts were characterized by transmission electron
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