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Synthesis of Carbon Nanostructures—In-Situ Study of Carbon Deposition Parameters

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An in-situ study of carbon deposition parameters by the method of chemical vapor deposition (CVD) from methane is used in order to estimate the time of the deactivation catalyst (Fe/Mo catalyst supported on alumina (Al2O3)). The deposition process is studied by measuring the weight change of the sample using a microbalance. The effect of the operating parameters, such as temperature, feed concentration, and catalyst composition, on the deposition rate and morphology of the deposits is investigated. Based on the initial weight of the catalyst, the relative weight gain of the sample due to carbon deposition on the catalyst is higher than 300% in a few minutes of the deposition process but the deposition rate reduces in more than 100 min. The carbon material characterized with Scanning Electron Microscopy (SEM) and Raman Spectroscopy and it is found to consist of carbon nanostructures.
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Document Type: Research Article

Publication date: 2007-07-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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