The effect of electrolyte wettability on reforming catalyst in direct ethanol MCFCs
- The effect of electrolyte wettability on reforming catalyst in direct ethanol MCFCs
- 데비안또하리; 이정란; 윤성필; 한종희; 남석우; 임태훈; 이호인
- MCFC; Ethanol; Reforming catalyst; Wettability
- Issue Date
- Current applied physics
- VOL 10, NO 2, S26-S28
- To overcome the poisoning of reforming catalyst contacted with the electrolyte without degradations of
performance and long-term stability, we proposed on the development of support which has low wettability
to electrolyte, but still keeps high activity on steam reforming of bio-ethanol. To perform the wettability
measurement, a couple of supports (MgO and PbO) were pressed to form disc-shaped specimen
with relatively low porosity, and subjected to an on-line optical contact angle measurement device at
MCFC operating condition. The results of wettability of the supports indicated that PbO showed low wettability
to the carbonates melts giving high contact angle. The microstructure of unreacted PbO layer
might be contributed to its low wettability. The highest activity was achieved with Ni/MgO, while the
lowest wettability was attained with PbO as a support. Ni/1MgO·1PbO seemed to be the most promising
candidate for avoiding the reforming catalyst from poisoning.
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