Ghosh, Sourav and Naskar, Milan Kanti (2013) Synthesis of mesoporous gamma-alumina nanorods using a double surfactant system by reverse microemulsion process. RSC Advances, 3 (13). pp. 4207-4211. ISSN 2046-2069

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Mesoporous gamma-Al2O3 nanorods were synthesized by a reverse microemulsion (water in oil, w/o) technique using an aqueous-based alumina sol, the anionic surfactant AOT (sodium bis(2-ethylhexyl sulfosuccinate)), the non-ionic co-surfactant Span 80 (sorbitan monooleate) and cyclohexane as an organic solvent. The gamma-Al2O3 phase was obtained at 500 degrees C with a slight transformation to theta-Al2O3 at 700 degrees C-900 degrees C, while a mixed phase of gamma-, theta- and alpha-Al2O3 resulted at 1000 degrees C. The BET surface area, pore volume and average pore size of the 500 degrees C-treated sample was found to be 59.3 m(2) g(-1), 0.040 cm(3) g(-1) and 2.65 nm respectively, which changed slightly in the temperature range of 500 degrees C-900 degrees C. The mesoporous gamma-alumina nanorods were formed through rod-like micelle formation in the presence of surfactant/co-surfactant in organic solvent, which was illustrated by a proposed mechanism.

Item Type: Article
Subjects: Engineering Materials
Divisions: Sol Gel
Depositing User: Bidhan Chaudhuri
Date Deposited: 10 Sep 2013 08:46
Last Modified: 21 Nov 2014 08:08

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