Catalytic properties and coking stability of new anode materials for internal methane reforming in the intermediate temperature solid oxide fuel cells

摘要

Catalytic properties and coking stability of composite materials based on NiO and doped apatite-type lanthanum silicates were studied for their using as anode materials for internal methane reforming in intermediate temperature solid oxide fuel cells. Samples based on Sr- or Al-doped lanthanum silicate were prepared by modified Pechini methods. The composite materials were characterized by X-ray diffraction, methane steam reforming and temperature programmed oxidation. The effects of La_(0.8)Sr_(0.2)Mn_(0.8)Cr_(0.2)O3 addition, partial Ni substitution with La_(0.1)Sr_(0.9)TiO3 ionic and electronic mixed conductor and composition of apatite-type lanthanum silicate on catalytic properties and coking resistance were considered.