Abstract
Fine-particle metal aluminates, MAl2O4 where M=Mg, Ca, Sr, Ba, Mn, Co, Ni, Cu and Zn as well as 3CaO · Al2O3 (C3A), CaAl12O19 (CA6) and MgCeAl11O19 have been prepared by the combustion of mixtures of the respective metal nitrates (oxidizers) and urea or carbohydrazide (fuels) at 500 or 350‡ C, respectively, over a time of 5 min. The solid combustion products were identified by their characteristic X-ray powder diffraction patterns. The fine-particle nature of these metal aluminates was investigated using SEM, TEM, particle size analysis and surface area measurements. The surface areas of the as-prepared metal aluminates using carbohydrazide fuel were higher (45 to 85 m2 g−1) compared with urea (1 to 20 m2 g−1).
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Kingsley, J.J., Suresh, K. & Patil, K.C. Combustion synthesis of fine-particle metal aluminates. J Mater Sci 25, 1305–1312 (1990). https://doi.org/10.1007/BF00585441
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DOI: https://doi.org/10.1007/BF00585441