Pyrolysis of propane for CVI of pyrocarbon

Pyrolysis of propane for CVI of pyrocarbon

“…An increase in temperature leads to an increase in the concentrations of acetylene and hydrogen. The same remark has been made in parts I and II of this work [1,2] in the same experimental conditions, but without carbon fibers in the reactor. It is worth noting that the concentrations of all species, except for hydrogen, are lower when the reactor is loaded in carbon fibers (i.e.…”

“…Experimental apparatus and analytical methods have been previously presented [1][2][3], and only the main features are recalled here. The pyrocarbon deposit is realized by propane pyrolysis, which is carried out in a reactor containing carbon fibers.…”

“…propane in our case. In order to reproduce the experimental gas phase species, a detailed kinetic mechanism describing the propane pyrolysis has been proposed in the parts I and II of this series of papers [1,2]. This mechanism involves more than 170 species, molecules or radicals, which react in 608 elementary reactions.…”

Preparation of C/C composites by the chemical vapor infiltration (CVI) of propane pyrolysis

“…Firstly, methyl, ethyl, and n-& i-propyl radicals are produced. Then the gas products, such as methane, ethylene and acetylene, are generated [9,10]. Benzene and toluene are also produced.…”

“…Ziegler et al [10][11][12] had identified carbon/carbon composite synthesis involves the deposition of a matrix of pyrocarbon produced by the pyrolysis of a gaseous hydrocarbon in a preform made of carbon fibers. They carried out the pyrolysis of propane in a wide range of temperature (1,173-1,298 K) with a residence time of 1 s. The pyrolysis generates various gaseous species such as hydrogen, various light hydrocarbons, aromatic and polyaromatic hydrocarbon species (PAH).…”