Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 165, Issue -, Pages 70-78Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2012.07.052
Keywords
Alumina; Mesoporous; Synthesis; Pore structure; Self-templating
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Funding
- US Department of Energy [DE-FG02-05ER15666]
- National Science Foundation [CHE-0959862]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0959862] Funding Source: National Science Foundation
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We report a simple, one-pot, solvent-deficient process using different aluminum salts to synthesize mesoporous gamma-alumina without external templates or surfactants. Samples prepared from aluminum inorganic salts have a close-packed morphology, where randomly stacked fibrous crystallites of gamma-alumina are obtained when utilizing aluminum alkoxides. After calcination at 700 degrees C for 2 h, surface areas of these nanostructured gamma-aluminas range from 210 to 320 m(2)/g. The average pore diameters range from 6 to 18 nm, the crystallite diameters range from 3 to 4 nm, and pore volumes range from 0.4 to 1.7 cm(3)/g. This synthetic method provides a facile route to synthesize stable, high surface-area mesoporous aluminas having a wide range of pore sizes and volumes. (C) 2012 Elsevier Inc. All rights reserved.
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