The results of experiments are presented in Fig. 1. It is seen (Fig. 1a)
that vanadia (No. 2) and FeOx (No. 1) GFCs demonstrate almost equal
activity above 200 °C with higher activity for vanadia sample at 175 °C.
The conventional iron oxide catalyst (No. 3) is significantly less active,
despite the few times higher mass loading of the iron oxide