Development of Flexible Catalyst Material for Internal Dry Reforming

Abstract

Paper-structured catalyst (PSC), flexible catalyst can be applied on the anode material, is now being studied. Catalytic activities of three types of Ni-loaded PSCs, (a) without the dispersion of support oxide particles in the fiber network (Ni-PSC), (b) with the dispersion of (Mg,Al)O derived from hydrotalcite (HT) (Ni/HT-PSC) and (c) with the dispersion of (Ce,Zr)O2 (Ni/(Ce,Zr)O2-PSC), for dry reforming of methane (CH4 + CO2 → 2H2 + 2CO) were evaluated at the operating temperature of 750 oC. Ni/(Ce,Zr)O2-PSC was found to exhibit the highest CH4 conversion (87 %) with the lowest degradation rate. (Ce,Zr)O2 solid solution having oxygen storage capacity (OSC) contributed to remove carbonaceous species deposited on the catalyst surface to regenerate active sites for dry reforming reaction.