| Affiliation: | (1) Department of Physical Chemistry, Eötvös University (ELTE), 1518 , P.O. Box 32, Budapest, Hungary;(2) Research Laboratory of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences, 1525, P.O. Box 17, Budapest, Hungary |
| Abstract: | Decomposition of carbon tetrachloride in a RF thermalplasma reactor was investigated in argon atmosphere. The netconversion of CCl4 and the main products of its decompositionwere determined from the mass spectrometric analysis of outletgases. Flow and temperature profiles in the reactor werecalculated and concentration profiles of the species along theaxis of the reactor were estimated using a newly developedchemical kinetic mechanism, containing 12 species and 34 reactionsteps. The simulations indicated that all carbon tetrachloridedecomposed within a few microseconds. However, CCl4 was partlyrecombined from its decomposition products. The calculationspredicted 70% net conversion of CCl4, which was close to theexperimentally determined value of 60%. A thermodynamicequilibrium model also simulated the decomposition. Results of thekinetic and thermodynamic simulations agreed well above 2000 K.However, below 2000 K the thermodynamic equilibrium model gavewrong predictions. Therefore, application of detailed kineticmechanisms is recommended for modeling CCl4 decomposition underthermal plasma conditions. |
