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A novel nanorod-like spinel aerogel is synthesized by the sol-gel method combined with the supercritical technique. The Mg4Al2(OH)14·3H2O and boehmite is formed in the spinel precursor aerogel and Mg4Al2(OH)14·3H2O transforms into MgO and spinel at 350°C. Structural transition of boehmite to γ-Al2O3 occurs at ca. 400°C, which is favorable to the further solid reaction between MgO and γ-Al2O3 forming...
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