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- Lee, Jae Sung
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Synthesis of nanostructured gamma-alumina with a cationic surfactant and controlled amounts of water
- Alternative Title
- Synthesis of nanostructured gamma-alumina with a cationic surfactant and controlled amounts of water
- Author(s)
- Lee, Hyun Chul, Kim, Hae Jin, Rhee, Chang Houn, Lee, Kyung Hee, Lee, Jae Sung, Chung, Soo Hyun
- Issued Date
- 2005-04
- Citation
- MICROPOROUS AND MESOPOROUS MATERIALS, v.79, no.1-3, pp.61 - 68
- Abstract
- Nanostructured crystalline gamma-alumina was synthesized by a simpler and improved method proposed here from aluminum alkoxide precursor in the presence of a cationic surfactant and controlled amounts of water under hydrothermal conditions without any extra additives such as hydrolysis controlling agents. The material synthesized with a stoichiometric amount of water (H2O/Al = 2) was a mesoporous molecular sieve with a 'wormhole-like' pore structure. With increasing amounts of water (H2O/Al = 10 or 20), bundles of gamma-alumina nanofibers were formed, and with H2O/Al > 20, materials with no definite morphology were formed, probably due to too fast hydrolysis of the precursor. The nanostructured materials had high surface areas and a good thermal stability. (c) 2004 Elsevier Inc. All rights reserved
- Publisher
- ELSEVIER SCIENCE BV
- ISSN
- 1387-1811
- Keyword (Author)
- alumina, nanostructured, mesoporous, hydrothermal synthesis, surfactants
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