Various mixed oxides having perovskite structure were prepared by co-precipitation and sol-gel methods. The samples were calcined at 700 ℃. The produced solids were characterized using X-ray diffraction analysis (XRD), thermogravimetry (TGA), differential thermal analysis (DTA), high resolution transmission electron microscope (HRTEM), nitrogen adsorption at -196 ℃ and hydrogen adsorption isotherms conducted at 100 ℃. The results revealed the formation of nanosized mixed solids, namely LaNiO3, LaFeO3, LaCoO3, LaCu2O4 and LaCrO3 compounds with crystallite size within 27-37 nm. The hysteresis loop of nitrogen adsorption isotherms of different investigated adsorbents indicate clearly the porous nature of different solids calcined at 700 ℃. The most active candidate towards hydrogen uptake is LaNiO3 prepared via sol-gel technique. Its adsorption capacity measured at 100 ℃ and 20 bar hydrogen pressure attained 1.7 wt%. So, LaNiO3 prepared via sol-gel technique could be considered as very promising material for hydrogen storage.