Optimization of Alumina and Aluminosilicate Aerogel Structure for High-Temperature Performance
作者： Frances I. Hurwitz , Meghan Gallagher , Tracy C. Olin , Molly K. Shave , Marlyssa Α. Ittes
DOI: 10.1111/IJAG.12070
关键词: Composite material 、 Aluminosilicate 、 Propylene oxide 、 Mesoporous material 、 Crystallization 、 Boehmite 、 Materials science 、 Morphology (linguistics) 、 Aerogel 、 General Materials Science
摘要: Alumina and aluminosilicate aerogels offer potential for use at temperatures above 700°C, where silica begin to sinter. Stability of alumina pore structures high is governed by the starting aerogel structure, which, in turn controlled synthesis route. Structure, morphology, crystallization behavior are compared synthesized from AlCl3 propylene oxide with those a variety boehmite precursors. The possessing crystalline structure as-synthesized condition retained mesoporous 1200°C, while AlCl3-derived aerogels, although exhibiting higher surface areas, crystallized densified 980–1005°C.
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