CO selective methanation in H2-rich gas for fuel cell application: Microchannel reactor performance with Ru-based catalysts

The catalytic activity on microchannel metal plates reactor was improved with the 3% Ru-γAl2O3 catalyst by doubling the its load on the surface (10 mg cm−2): the residual CO concentration decreased to about 100-150 ppmv at 310 °C, but a large amount of methane was formed also by the CO2 methanation, thus reducing catalyst selectivity.