期刊
CARBON
卷 41, 期 8, 页码 1501-1508出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0008-6223(03)00075-7
关键词
pyrolytic carbon; chemical vapor deposition; pyrolysis; reaction kinetics; carbon yield
The chemistry of carbon deposition from methane as a function of methane pressure was studied at a temperature of 1100 degreesC and surface area/volume ratios of 0.8 and 3.2 mm(-1) by analysis of both gaseous and condensing, i.e. aromatic reaction products. Conversion of methane as well as the yields of the hydrocarbons formed increase with increasing pressure. The surface area/volume ratio has a significant influence on the formation of aromatic hydrocarbons showing much higher yields at the lower ratio. This result, expected from preceding studies of deposition rates, confirms that a change of this ratio leads to a change of the deposition chemistry of carbon. (C) 2003 Elsevier Science Ltd. All rights reserved.
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