Hydrogen production by glycerol steam reforming over CeZrCo fluorite type oxides

The glycerol steam reforming reaction was studied for selective hydrogen production. The effect of the reaction temperature and of the active phase was evaluated using two catalysts Ce2Zr1.5Co0.5O8−δ (CZCo) and Ce2Zr1.5Co0.47Rh0.07O8−δ (CZCoRh) mixed oxides. For both catalysts the increment of temperature favoured the glycerol conversion into gaseous products. At 650 °C, 95% of the thermodynamic H2 production was obtained (6.1 molH2 molGly.in−1) using CZCoRh. For the CZCoRh diluted with SiC, the H2 production increased to 6.7 molH2 molGly.in−1 and remained during 16 h. The blank results showed that 0.5 molH2 molGly.in−1 is formed using the SiC bed alone.