Abstract
High temperature methane chlorination offers an alternative process route to the utilization of methane, since the presence of chlorine lowers the pyrolysis temperature. Chlorine, methane and nitrogen were introduced in a tubular reactor while varying hydrogen to chlorine ratios at temperatures ranging from 600 °C to 1000 °C. The chlorine conversion rates, hydrogen chloride yields, and the chlorine content in the soot were determined. While complete conversion of the limiting reactant was found in most experiments, differing trends were observed for the hydrogen chloride yield. Chlorine was almost always found in the carbon. At the same methane flow rate, a tendency for carbon formation was ascertained to depend on the amount of chlorine supplied, with the most extensive deposits being formed for a hydrogen to chlorine ratio of unity. Furthermore, in the case of high chlorine excess, crystalline products form at the reactor outlet.
Published Version
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