Autocatalytic gas-phase ethane dehydrogenation in a wall-less reactor

Autocatalytic gas-phase dehydrogenation of ethane

“…1) is considered elsewhere as the main chain-initiating step. Unfortunately, it contradicts the experimental finding of our previous work [31], which indicated that methyl radicals are produced at activation energy barrier of 250 kJ/mol which is substantially lower than the activation energy required by Eq. 1, 360 kJ/mol.…”

“…For most of the reactions considered in this work experimental data are available [31,33]. However, some possibilities cannot be verified by use of these existing experimental data, for example some routes of generation of methyl radicals, etc.…”

“…This changed the time to establish heat fields in the reactor volume, which is closely related to the fraction of the sensitizer in the reaction zone: the lower the amount of ethylene, the higher is the laser energy needed to heat the reaction mixture to a specified temperature. Detailed estimates of the reactor thermophysics are reported elsewhere [31,32].…”

“…Chromatographic analysis of gas samples was performed before and after irradiation. The reactor thermal fields were established within 0.2 s. The gas temperature was estimated using methods described elsewhere [31,32]. The temperature in the nearsurface gas layer with a thickness of approximately 2 mm quickly dropped to 350-380 K.…”

“…Snytnikov et al [31] performed homogeneous gas-phase decomposition of ethane in the absence of walls at atmospheric pressure without an inert diluent. Butane was not found in the reaction products; the main products were C 2 H 4 , CH 4 , and H 2 .…”