Methane conversion into acetylene in a microwave plasma: Optimization of the operating parameters

Abstract

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Thermodynamic Aspects of Diamond/β‐SiC Composite Films

“…Indeed C x H y hydrocarbons with x > 2 were not found in high quantities in the experiments. [29] CH 3 and C 2 H 2 are generally found to be the abundant diamondforming species under the considered experimental conditions. [25,[30][31][32] It can be clearly observed that at lower temperatures (up to $1200 K) there is not much variation in CH 4 , indicating its non-participation in the deposition process.…”

Investigation of Synthesis‐Gas Production via CH4O2Ar Gas Mixture Using Microwave Plasma Torch

“…Further on, concentrations of atomic species like H, O, and electron are increased at higher plasma temperature due to higher rate of electron impact ionization and dissociation reactions. Moreover, complex hydrocarbons (like C 2 H 4 , CH 3 OH, C 2 H 6 , CH 2 O, and C 2 H 2 ) reported in ref., [1,5] in our system have very low concentrations, and their probability decreases drastically at higher temperature near our plasma reaction zone. Therefore, regarding these simulations in the CH 4 …”

“…Also, pure CH 4 MW plasma conversion experiments showed the possible existence of C 2 H 2 , C 2 H 4 , C 2 H 6 , and a small amount of C 3 H 6 and C 3 H 8 species in the final product. [5] The species involved in the plasma were selected according to the experimental analysis in ref. [1,5,14] along with our pre-assumption in which we carried out for CH 4 ÀO 2 ÀAr MW plasma reactor.…”

“…[5] The species involved in the plasma were selected according to the experimental analysis in ref. [1,5,14] along with our pre-assumption in which we carried out for CH 4 ÀO 2 ÀAr MW plasma reactor. Therefore, the considered species for this simulation are: CH 4 In our study, the total Gibbs energy of the system (Equation 1) has been evaluated as the sum of all species partial molar Gibbs energy (Equation 2), regarding their molar weight in the gas mixture as…”

“…[5] The non-catalytic conversion of CH 4 or CH 4 ÀO 2 has been carried out by discharge approaches such as high pulse frequency, [6] corona, [7] radiofrequency (RF), [8] MW, [9] and dielectric barrier discharges (DBDs). [10] These plasmas primarily yielded C 2 hydrocarbons, methanol, or diamond-like carbon film and not extensively syngas.…”