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http://dx.doi.org/10.7316/KHNES.2022.33.1.1

Analysis of Methane Conversion Rate and Selectivity of Methane Pyrolysis Reaction in Ceramic Tube According to Temperature and Reaction Time  

LEE, DONGKEUN (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
KIM, YOUNGSANG (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
AHN, KOOKYOUNG (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
Publication Information
Transactions of the Korean hydrogen and new energy society / v.33, no.1, 2022 , pp. 1-7 More about this Journal
Abstract
Interest in hydrogen productions that do not emit carbon dioxide and can produce hydrogen at a low price is increasing. Reforming and electrolysis are widely used, but they have limitations, such as carbon dioxide problems and costs. The methane can be decomposed as hydrogen and solid carbon without carbon dioxide emission at high temperatures. In this research, the methane pyrolysis experiment was conducted at 1,200℃ and 1,400℃ in a ceramic tube. The composition of the produced gas was measured by gas chromatography before carbon blocked the tube. The methane conversion rate and hydrogen selectivity were calculated based on the results. The hydrogen selectivity was derived as 60% and 55% at the highest point at 1,200℃ and 1,400℃, respectively. The produced solid carbon was expected to be carbon black and was analyzed using scanning electron microscope.
Keywords
Methane pyrolysis; Decomposition; Hydrogen production; Solid carbon; Ceramic tube; Conversion rate;
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