In this work, La-based perovskites with various stoichiometries were synthesized and tested for Autothermal Reforming (ATR) in the intermediate temperature solid oxide fuel cell technology (IT-SOFC). Three materials were compared, namely La0.5Sr0.5Fe0.8Cu0.2O3-δ (LaSrFeCu), La0.3Sr0.7Fe0.7Ti0.3O3-δ (LaSrFeTi) and La0.4Sr0.4Ba0.2TiO3+δ (LaSrBaTi), where the subscripts indicate the atomic ratio used during the synthesis. In the specific, two wet-chemistry approaches (solution combustion synthesis and chelate complex route) were used to obtain mesoporous La-based perovskites. The physico-chemical properties of the materials were analyzed by complementary techniques. Their semiconductive and redox properties were studied by in situ electrical conductivity measurements as a function of the temperature and, at constant temperature, as a function of the partial pressure of oxygen and of the nature of the gaseous atmosphere flowing over the solid. Then, the perovskites were impregnated with 7 wt% of Ni, characterized and tested for the autothermal reforming of ethanol, model biogas, and methane at 500 and 600 °C. Catalytic tests showed a high syngas production (83%) when ethanol was used as fuel at 600 °C. Analysis of the carbon deposited under different reaction conditions was also performed, in order to assess the stability the proposed materials. Ni_LaSrBaTi exhibited almost complete ethanol conversion and high H2 selectivity, together with strong structural/thermal stability and good resistance to coke formation, which make this catalyst a promising candidate as IT-SOFC's pre-layer anode.