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 Ca0.8Sr0.2TiO3 as a dielectric barrier and 18.8% CO2 conversion was achieved with the residence time of 0.17 s at the frequency of 8 kHz, 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.
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Li, R., Tang, Q., Yin, S. et al. Preparation and Application of Ca0.8 Sr0.2 TiO3 for Plasma Activation of CO2 . Plasma Chem Plasma Process 26, 267–276 (2006). https://doi.org/10.1007/s11090-006-9002-x
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DOI: https://doi.org/10.1007/s11090-006-9002-x