Dependence of the dissociative recombination coefficient of molecular ions Kr2+ with electrons on the electron and gas temperature
Lukáč P., Mikuš O., Morva I., Zábudlá Z., Trnovec J., Morvová M., Hensel K. Plasma Sources Sci. Technol. 21 (6), 065002, 7 pp (2012)
download
|
Abstract: Plasma catalysis has been utilized in many environmental applications for removal of various hydrocarbons including tars. The aim of this work was to study tars removal process by atmospheric pressure DBD non-thermal plasma generated in combination with packing materials of various composition and catalytic activity (TiO2, Pt/γAl2O3, BaTiO3, γAl2O3, ZrO2, glass beads), dielectric constant (5–4000), shape (spherical and cylindrical pellets and beads), size (3–5 mm in diameter, 3–8 mm in length) and specific surface area (37–150 m2/g). Naphthalene was chosen as a model tar compound. The experiments were performed at a temperature of 100°C and a naphthalene initial concentration of approx. 3000 ppm, i.e. under conditions that are usually less favorable to achieve high removal efficiencies. For the given specific input energy of 320 J/L, naphthalene removal efficiency followed a sequence: TiO2 > Pt/γAl2O3 > ZrO2 > γAl2O3 > glass beads > BaTiO3 > plasma only. The efficiency increased with the increasing specific surface area of a given packing material, while its shape and size were found also important. By-products of naphthalene decomposition were analyzed by means of FTIR spectrometry and surface of packing materials by SEM analysis.
|
Citations: 1.) | K. S. Kislov, A. A. Narits & V. S. Lebedev: Analysis of Efficiencies of Electron Capture by Ions into Rydberg States and Inelastic n → n' Transitions in Plasma of Inert Gas Mixtures, Optics and Spectroscopy 128, 448–466 (2020), citation no. 12, WoS (2020) ------------- | 2.) | K. S. Kislov, A. A. Narits & V. S. Lebedev: Direct Dissociative Excitation of Heteronuclear and Homonuclear Ions of Inert Gases by Electron Impact, Optics and Spectroscopy 128, 1719–1737 (2020), citation no. 21, WoS (2020) ------------- | 3.) | E. P. Seidel, F. Arretche: Rovibrational excitation of rare-gas dimers by electron impact, Phys. Rev. A 98, 052707 (2018), citation no. 17, SCOPUS (2018) ------------- | 4.) | P. Tian, M. J. Kushner: Controlling VUV photon fluxes in low-pressure inductively coupled plasmas, Plasma Sources Sci. Technol. 24, 034017 (2015), citation no. 57, INDEX (2015) ------------- | 5.) | A. M. Ortega, Y. Dabin, A. Lacoste, T. Minea: Study of Energy Transfer Mechanism for a Synchrotron X-ray Gas Absorber with COMSOL Multiphysics, Comsol Conference, Grenoble (France), October 14-16, USB (2015), citation no. 5 (2015) ------------- | 6.) | W. Zhu, P. Niraula, P.G.C. Almeida, M.S. Benilov, D.F.N Santos: Self-organization in dc glow microdischarges in krypton: modelling and experiments, Plasma Sources Sci. Technol. 23, 054012 (2014), citation no.21, WoS (2014) ------------- | 7.) | P. G. C. Almeida, M. S. Benilov, D. F. Santos, W. Zhu, P. Niraula: Self-organization in DC glow microdischarges in krypton: 3D modelling and experiments, 31st International Conference on Phenomena in Ionized Gases XXXI ICPIG, Granada (Spain), July 14-19, CD-ROM (2013), citation no.10 (2013) ------------- | |