Reducing the Size of the Reactor for Production of Fullerene-containing Soot and Study on the Efficiency of Alumina and Silica Gel as Stationary Phase for Separation of C60 and C70

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Kadivar Salekoyeh, Mohammad | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47529 (03)
University: Sharif University of Technology
Department: Chemistry
Advisor(s): Ghanbari, Bahram; Gol Nabi, Hossein
Abstract:
In this study, with respect to previous projects, we focused on size reduction of hollow and endohedral fullerenes research reactors. For this reason, we set up two reactors having 1/2 and 3 liters volumes and then such parameters as pressure, reactor temperature, arc duration time, arc time interval and the working electrical current through the electrodes circuit, in both reactors were optimized. The reactors, 3- and 1/2-liter reactors were of types of horizontal and vertical, respectively. In this project spatial angle between two electrodes were also found as effective variable on fullerenes yield in the 3-liters arc reactor for the first time. We found that upon correction of the spatial angle between two electrodes to 160°, the yield of fullerenes increased to two times. In addition, the separation of the fullerenes mixtures employing solid-liquid chromatography on an alumina-silica gel solid as stationary phase, produced high C60 purity. Moreover, [60]Fullerene was purified up to 97% by this method
Keywords:
Fullerene ; Soot ; Separation ; Reactor ; Electric Arcs

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