Figure 1. Schematic of the plasma-assisted catalytic dry reforming reactor.
Figure 2. TEM images of the thermally reduced (a and b) and plasma-reduced (c and d) catalysts at different magnifications.
Figure 3. SEM images of (a) the thermally reduced and (b) plasma-reduced catalysts.
Figure 5. XRD patterns of (a) bare γ-Al2O3, (b) calcined catalyst, (c) thermally reduced Ni-CeO2/γ-Al2O3, and (d) plasma-reduced Ni-CeO2/γ-Al2O3.
Figure 6. H2-TPD curves of the Ni-CeO2/γ-Al2O3 catalysts.
Figure 7. CO2-TPD curves of the Ni-CeO2/γ-Al2O3 catalysts.
Figure 8. Conversions at different temperatures: (a) C3H8 and (b) CO2.
Figure 9. Concentrations of (a) H2 and (b) CO obtained at different temperatures.
Figure 10. SEM images of the catalysts after dry reforming reaction: (a) TRC, (b) TRC+Plasma, (c) PRC, and (d) PRC+Plasma.
Figure 11. Raman spectra of the Ni-CeO2/γ-Al2O3 catalysts after dry reforming reaction: (a) TRC, (b) TRC+Plasma, (c) PRC, and (d) PRC+Plasma.
Figure 4. (a) Elemental mapping image and (a*) EDS spectra of the thermally reduced catalyst, and (b) elemental mapping image and (b*) EDS spectra of the plasma-reduced catalyst catalyst.
Table 1. Number of desorbed H2 molecules determined by H2-TPD
Table 2. Number of desorbed CO2 molecules determined by CO2-TPD
Table 3. Experimental conditions for the dry reforming reaction
Table 4. Amount of carbon deposition in wt%
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