Comparative study on decomposition of CFCl3 in thermal and cold plasma

Katalin A. Foglein, J. Szépvölgyi, P. Szabó, E. Mészáros, Emma Pekker-Jakab, Irina Z. Babievskaya, I. Mohai, Zoltán Károly

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Decomposition of CFCl3 was investigated in an RF inductively coupled thermal reactor in neutral, oxidative and reductive conditions, and in a silent electric discharge (cold plasma) in neutral and oxidative conditions, respectively. In RF thermal plasma reactor, in neutral conditions, mainly gaseous products and minor amount of solid soot was formed. About 50% the soot could be extracted by toluene. Both the gas phase and the extract contained a wide range of aliphatic and aromatic compounds including chlorine and fluorine containing polyaromatic hydrocarbons (PAHs). In oxidative conditions much less soot was formed as compared to the neutral case. The solid product contained about 45% extractable fraction even in oxidative conditions. However, the extract contained less PAHs than in neutral conditions. In reducing atmosphere the soot yield was similar to the neutral case, but the soot contained 29% extractable fraction only. The extract consisted of polyhalogenated aromatic and polyaromatic hydrocarbons as main components. In neutral conditions different chlorofluorocarbons (CFCs) and chlorine were detected as gaseous products in cold plasma. In oxidative conditions, as final products of decomposition CO 2, CFCs and Cl3 were formed.

Original languageEnglish
Pages (from-to)275-288
Number of pages14
JournalPlasma Chemistry and Plasma Processing
Volume25
Issue number3
DOIs
Publication statusPublished - Jun 2005

Fingerprint

Plasma Gases
Soot
thermal plasmas
cold plasmas
soot
Decomposition
Plasmas
decomposition
Hydrocarbons
Chlorofluorocarbons
Chlorine
chlorofluorocarbons
hydrocarbons
products
Electric discharges
Fluorine
Aromatic compounds
chlorine
Toluene
Carbon Monoxide

Keywords

  • CHCl
  • Halogenated hydrocarbons
  • RF thermal plasma
  • Silent electric discharge
  • Thermodynamics

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

Cite this

Comparative study on decomposition of CFCl3 in thermal and cold plasma. / Foglein, Katalin A.; Szépvölgyi, J.; Szabó, P.; Mészáros, E.; Pekker-Jakab, Emma; Babievskaya, Irina Z.; Mohai, I.; Károly, Zoltán.

In: Plasma Chemistry and Plasma Processing, Vol. 25, No. 3, 06.2005, p. 275-288.

Research output: Contribution to journalArticle

Foglein, Katalin A. ; Szépvölgyi, J. ; Szabó, P. ; Mészáros, E. ; Pekker-Jakab, Emma ; Babievskaya, Irina Z. ; Mohai, I. ; Károly, Zoltán. / Comparative study on decomposition of CFCl3 in thermal and cold plasma. In: Plasma Chemistry and Plasma Processing. 2005 ; Vol. 25, No. 3. pp. 275-288.
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