Sulfur Tolerance of Au-Mo-Ni/GDC SOFC Anodes Under Various CH4 Internal Steam Reforming Conditions

Thursday, 30 July 2015: 15:00
Boisdale (Scottish Exhibition and Conference Centre)
C. Neofytides, M. Athanasiou (FORTH/ICE-HT, Patras, Greece, University of Patras, Greece), S. G. Neophytides, and D. K. Niakolas (FORTH/ICE-HT, Patras, Greece)
The present work refers to the short communication of a first series of obtained results on how Au and/or Mo addition can affect the stability of modified Ni/GDC anodes for the reaction of internal CH4 steam reforming, in the presence of H2S. Specifically, it is shown that Ni/GDC is stable in the presence of 10 ppm H2S, but only in the case where 100 vol% of H2 is the anode feed. In the case where CH4 and H2O (diluted in Helium carrier gas) comprise the anode feed, then at ratios equal to S/C = 2 or S/C = 0.13 the performance of Ni/GDC shows severe degradation, while the Au-Mo-Ni/GDC anode has the best and most stable electrocatalytic behavior. Finally, the effect of the electrocatalyst`s loading on the sulfur tolerance is also investigated.