Figure 5
Fourier-transformed k3-weighted EXAFS spectra at the Co K-edge measured during the thermal decomposition of Co oxalate in H2 gas flow (k-range: 2.4–9.15 Å−1). The temperature was increased linearly from room temperature to 673 K and the two stages of oxalate dehydration (two of six oxygen neighbours removed) and of oxalate decomposition (evolution of Co metal as final product) can be identified immediately in the data. |