Hydrogen production by glycerol steam reforming over CeZrCo fluorite type oxides

Abstract

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 Ce 2Zr 1.5Co 0.5O 8− δ (CZCo) and Ce 2Zr 1.5Co 0.47Rh 0.07O 8− 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 H 2 production was obtained (6.1 molH 2 mol Gly.in −1) using CZCoRh. For the CZCoRh diluted with SiC, the H 2 production increased to 6.7 molH 2 mol Gly.in −1 and remained during 16 h. The blank results showed that 0.5 molH 2 mol Gly.in −1 is formed using the SiC bed alone.