Exploring CeO2-doped Co/SBA-15 catalysts for acetic acid oxi-dative steam reforming

CeO2 was incorporated (5–30 wt.%) to improve the physico-chemical properties of the catalyst. XRD analysis confirmed that CeO2 addition resulted in smaller Co0 mean crystallite sizes, while H2-TPR showed enhanced reducibility properties.

The catalytic performance was evaluated in the 400–700°C range, S/C molar ratio = 2, O2/C molar ratio = 0.0375, WHSV = 30.2 h-1, and P = 1 atm. Catalysts containing 10 and 20 wt.% of CeO2 exhibited the best catalytic performance, achieving nearly complete conversions and H2 yield values approaching thermodynamic equilibrium at 550 °C. Both samples maintained an acetic acid conversion above 90% after 30 h of time-on-stream with H2 yields above 55 % along the steam reforming tests.