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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Synthesis of nanostructured gamma-alumina with a cationic surfactant and controlled amounts of water

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Title
Synthesis of nanostructured gamma-alumina with a cationic surfactant and controlled amounts of water
Other Titles
Synthesis of nanostructured gamma-alumina with a cationic surfactant and controlled amounts of water
Author
Lee, Hyun ChulKim, Hae JinRhee, Chang HounLee, Kyung HeeLee, Jae SungChung, Soo Hyun
Keywords
alumina; nanostructured; mesoporous; hydrothermal synthesis; surfactants
Issue Date
2005-04
Publisher
ELSEVIER SCIENCE BV
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
URI
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DOI
10.1016/j.micromeso.2004.10.021
ISSN
1387-1811
Appears in Collections:
ECHE_Journal Papers
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