Solid oxide fuel cell(SOFC) has a higher fuel flexibility than low temperature fuel cells, such as
polymer electrolyte fuel cell(PEMFC) and phosphoric acid fuel cell(PAFC). SOFCs also use CO and
CH4 as a fuel, because SOFCs are hot enough to allow the CH4 steam reformation(SR) reaction and
water-gas shift(WGS) reaction occur within the SOFC stack itself. Diesel is a good candidate for SOFC
system fuel because diesel reformate gas include a higher degree of CO and CH4 concentration than
other hydrocarbon(methane, butane, etc.) reformate gas. Selection of catalyst for autothermalr reforming
of diesel was performed in this paper, and characteristics of reforming performance between packed-bed
and microchannel catalyst are compared for SOFC system. The mesh-typed microchannel catalyst also
investigated for diesel ATR operation for 1kW-class SOFC system. 1kW-class diesel microchannel ATR
was continuously operated about 30 hours and its reforming efficiency was achieved nearly 55%.