2021 Volume 54 Issue 10 Pages 534-540
The effect of K, V, Mo, and La addition to Ru/Al2O3 on its performance in CO methanation removal from simulated hydrocarbon reformed gas was investigated for polymer electrolyte fuel cell (PEFC) applications. The addition of V or Mo enhanced the CO methanation removal activity, while that of K and La did not. CO removal from the simulated reformed gas to levels below 20 ppm was achieved using Ru/V/Al2O3 and Ru/Mo/Al2O3, while with the use of Ru/Al2O3, the lowest achievable level was 100 ppm. However, the addition of V or Mo to Ru/Al2O3 increased the methanation activity of not only CO but also CO2. Therefore, the reaction temperature window, wherein CO removal can be performed with high selectivity for the methanation of CO vs. CO2, was narrow.
