Fig. 1

TEM images and EDX spectrums of Pt-TiO$_{2}$ catalysts[19] "

Fig. 2

TEM images of the samples[21] "

Fig. 3

TEM images of samples C, P, N, S[22] "

Fig. 4

TEM images of CoCr$_{2}$O$_{4}$ catalysts[23] "

Fig. 5

TEM images of CeO$_{2}$-$s$ and MnO$_{x}$-CeO$_{2}$-$s$[25] "

Fig. 6

Conversion rate of C$_6$H$_5$Cl over the CeO$_2$ catalysts[26] "

Fig. 7

Conversion rate C$_6$H$_5$Cl over the MnO$_x$/CeO$_2$ catalysts[27] "

Fig. 8

Catalytic activity of Pt-$x$/ZSM-5 catalyst[17] "

Fig. 9

Conversion rate of HCHO over series of Na-doped Pd/TiO$_{2}$ catalysts[31] "

Fig. 10

Conversion rate of HCHO over the MnO$_2$ catalysts[32] "

Fig. 11

Conversion rate of HCHO over the K$_x$MnO$_2$ catalysts[33] "

Fig. 12

Conversion rate of propane over the Pt/Al$_{2}$O$_{3}$ catalysts[38] "

Fig. 13

Eeffect of Ce and Zr loading on the activity of Pd-CeZr-$x$ catalysts[39] "

Fig. 14

Catalytic activity of Cu-ZSM-5 catalyst[43] "

Fig. 15

Catalytic activity of Pt/Al$_{2}$O$_{3}$/M catalyst[49] "

Table 1

Conversion and corresponding carbon dioxide yield in the combustion of DCM, TCM and TCE[50]"

Fig. 16

Conversion rate of TCE over CeO$_{2}$ catalysts calcined at different temperatare[51] "