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Flash microwave synthesis and sintering of nanosized La0.75Sr0.25Cr0.93Ru0.07o3–δ for fuel cell application

✍ Scribed by L. Combemale; G. Caboche; D. Stuerga

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
562 KB
Volume
182
Category
Article
ISSN
0022-4596

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✦ Synopsis

Perovskite-oxide nanocrystals of La 0.75 Sr 0.25 Cr 0.93 Ru 0.07 O 3-d with a mean size around 10 nm were prepared by microwave flash synthesis. This reaction was performed in alcoholic solution using metallic salts, sodium ethoxide and microwave autoclave. The obtained powder was characterised after purification by energy dispersive X-ray analysis (EDX), X-ray powder diffraction (XRD), BET adsorption technique, photon correlation spectroscopy (PCS) and transmission electron microscopy (TEM). The results show that integrated perovskite-type phase and uniform particle size were obtained in the microwave treated samples. At last the synthesised powder was directly used in a sintering process. A porous solid, in accordance with the expected applications, was then obtained at low sintering temperature (1000 1C) without use of pore forming agent.

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