AIChE Journal, Vol.43, No.11, 2874-2877, 1997
La-Ni-Oxide Films, Fibers and Powders by La(Moe)(3)-Ni(Acac)(2) Precursors
The preparation of LaNiO3, La4Ni3O10, La3Ni2O7-delta and La2NiO4 via La-methoxy-ethanolato - Ni(acac)(2) precursor was investigated. Front these precursors films, fibers and powders were prepared and heat treated to form LaNiO3 at temperatures as low as 750 degrees C with a heating rime of 4 h. The formation of La-4 Ni-3 O-10 and La-2 NiO4 was complete at 1,000 degrees C, for 4 h, while monophasic La3Ni2O7 required heating to 1,150 degrees C, for I h. Pathways yielding various phases were also discussed briefly The techniques used in this study are TGA, mass-spectroscopy, SEM-EDS, TEM-EDS, powder-XRD, and FT-IR spectroscopy.