Difference in Conversions between Dimethyl Sulfide and Methanethiol in a Cold Plasma Environment

Cheng Hsien Tsai, Wen Jhy Lee, Chuh Yung Chen, Perng Jy Tsai, Guor Cheng Fang, Minliang Shih

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20 Citations (Scopus)


This study compared the conversion of two malodorous substances, dimethyl sulfide (CH3SCH3, DMS) and methanethiol (CH3SH) in a cold plasma reactor. The DMS and CH3SH were successfully destroyed at room temperature. DMS decomposed less than CH3SH at the same conditions. In oxygen-free condition, CS2and hydrocarbons were the major products, while SO2and COxwere main compounds in oxygen-rich environments. The DMS/Ar plasma yielded more hydrocarbons and less CS2than that of CH3SH/Ar plasma. In the CH3SH/O2/Ar plasma, rapid formation of SO and CO resulted in the yields much more amounts of SO2and CO2than those in the DMS/O2/Ar plasma; and remained only a trace of total hydrocarbons, CH2O, CH3OH, CS2and OCS. The major differences between the reaction mechanisms of DMS and CH3SH were also proposed and discussed.

Original languageEnglish
Pages (from-to)141-157
Number of pages17
JournalPlasma Chemistry and Plasma Processing
Issue number1
Publication statusPublished - 2003 Mar 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Surfaces, Coatings and Films


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