Effects of Gd2O3 doping and steam/carbon ratio on the activity of the catalyst for internal steam reforming in molten carbonate fuel cell

The effect of Gd 2 O 3 doping on the catalyst Ni/MgO was studied. The Gd doping suppressed coke formation, and enhanced catalytic activity for steam reforming reaction. The Gd doping seemed to activate the dissociative adsorption of water to increase OH concentration on the catalyst as if steam feed was increased. BET surface area and Ni dispersion were increased with the increase of Gd addition till 10wt% referenced to Ni weight, and then decreased due to the segregation of Gd 2 O 3 from the mixed compound of Gd and MgO. The increase of Ni dispersion was one of the reasons to suppress coke formation.