Decomposition of toluene in a steady-state atmospheric-pressure glow discharge
- 170 Downloads
Results are presented from experimental studies of decomposition of toluene (C6H5CH3) in a polluted air flow by means of a steady-state atmospheric pressure glow discharge at different water vapor contents in the working gas. The experimental results on the degree of C6H5CH3 removal are compared with the results of computer simulations conducted in the framework of the developed kinetic model of plasma chemical decomposition of toluene in the N2: O2: H2O gas mixture. A substantial influence of the gas flow humidity on toluene decomposition in the atmospheric pressure glow discharge is demonstrated. The main mechanisms of the influence of humidity on C6H5CH3 decomposition are determined. The existence of two stages in the process of toluene removal, which differ in their duration and the intensity of plasma chemical decomposition of C6H5CH3 is established. Based on the results of computer simulations, the composition of the products of plasma chemical reactions at the output of the reactor is analyzed as a function of the specific energy deposition and gas flow humidity. The existence of a catalytic cycle in which hydroxyl radical OH acts a catalyst and which substantially accelerates the recombination of oxygen atoms and suppression of ozone generation when the plasma-forming gas contains water vapor is established.
Unable to display preview. Download preview PDF.
- 4.Yu. S. Akishev, V. B. Karalnik, I. V. Kochetov, et al., in Proceedings of the 16th International Symposium on Plasma Chemistry, Taormina, 2003, p. 226.Google Scholar
- 11.N. Blin-Simiand, F. Jorand, Z. Belhadj-Miled, et al., Int. J. Plasma Environ. Sci. Technol. 1, 64 (2007).Google Scholar
- 13.S. Futamura, T. Terasawa, and M. Sugasawa, in Proceedings of the 18th International Symposium on Plasma Chemistry, Kyoto, 2007.Google Scholar
- 14.D. N. Chin, C. W. Park, and C. W. Hahn, Bull. Korean Chem. Soc. 21, 228 (2000).Google Scholar
- 19.K. H. Becker, E. H. Fink, W. Groth, et al., Faraday Discuss. Chem. Soc., No. 53, 35 (1972).Google Scholar
- 25.Master Chemical Mechanism (University of Leeds, Leeds, UK, 2010), http://mcm.leeds.ac.uk/MCM/
- 33.A. Ogata, H. H. Kim, S. M. Oh, et al., in Proceedings of the International Conference on Electrostatic Precipitation, Cairns, 2006, p. 1.Google Scholar
- 34.V. T. Samoilovich, V. I. Gibalov, and K. V. Kozlov, Physical Chemistry of Barrier Discharge (Izd. Mosk. Gos. Univ., Moscow, 1989) [in Russian].Google Scholar
- 35.R. Ono and R. Oda, Int. J. Plasma Environ. Sci. Technol. 1, 123 (2007).Google Scholar
- 37.M. B. Zheleznyak and E. A. Filimonova, Teplofiz. Vys. Temp. 36, 557 (1998).Google Scholar