Preparation and application of Ca0.8 Sr0.2 TiO 3 for plasma activation of CO2

Ruixing Li, Qing Tang, Shu Yin, Tsugio Sato

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12 Citations (Scopus)

Abstract

Despite a large interest in plasma-assisted catalytic technology (PACT), very little has been reported about the catalytic effects of different dielectric barriers on a dielectric barrier discharge (DBD) reaction. In the present study, Ca0.8Sr0.2TiO3, that possesses a high permittivity, was prepared by liquid phase sintering and used as a dielectric barrier in a DBD reactor to break CO2. The mechanical and dielectric properties of Ca0.8Sr0.2TiO3 were greatly enhanced by adding 0.5 wt.% Li2Si2O5. A DBD plasma was successfully generated by using this Ca0.8Sr 0.2TiO3 as a dielectric barrier and 18.8% CO2 conversion was achieved with the residence time of 0.17s at the frequency of 8kHz, which was much higher than with those using an alumina or a silica glass barrier. It was found that the plasma power increased with the increasing of the permittivity, and finally very dense and strong microdischarges were initiated to decompose CO2.

Original languageEnglish
Pages (from-to)267-276
Number of pages10
JournalPlasma Chemistry and Plasma Processing
Volume26
Issue number3
DOIs
Publication statusPublished - 2006 Jun

Keywords

  • CaTio
  • Carbon dioxide
  • Decomposition
  • Dielectric barrier discharge
  • Plasma
  • SrTio

ASJC Scopus subject areas

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

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