Synthesis of Spherical Nanostructured g-Al2O3 Particles using Cetyltrimethylammonium Bromide (CTAB) Reverse Micelle Templating

Didi Prasetyo Benu  -  Division of Inorganic and Physical Chemistry, Institut Teknologi Bandung, Indonesia
*Veinardi Suendo orcid scopus  -  Division of Inorganic and Physical Chemistry, and Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Indonesia
Rino Rakhmata Mukti scopus  -  Division of Inorganic and Physical Chemistry, and Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Indonesia
Erna Febriyanti scopus  -  Division of Inorganic and Physical Chemistry, Institut Teknologi Bandung, Indonesia
Fry Voni Steky  -  Division of Inorganic and Physical Chemistry, Institut Teknologi Bandung, Indonesia
Damar Rastri Adhika  -  Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Indonesia
Viny Veronika Tanuwijaya  -  Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Indonesia
Ashari Budi Nugraha  -  Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Indonesia
Received: 7 Dec 2018; Revised: 8 May 2019; Accepted: 20 May 2019; Published: 1 Dec 2019; Available online: 30 Sep 2019.
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Section: Original Research Articles
Language: EN
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In 2019: BCREC Volume 14 Issue 3 Year 2019 (SCOPUS and Web of Science Indexed, December 2019)
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Abstract

We demonstrated the synthesis of spherical nanostructured g-Al2O3 using reverse micelle templating to enhance the surface area and reactant accessibility. Three different surfactants were used in this study: benzalkonium chloride (BZK), sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB). We obtained spherical nanostructured particles only using CTAB that form a reverse micelle emulsion. The particles have wide size distribution with an average size of 2.54 mm. The spherical particles consist of nanoplate crystallites with size 20-40 nm randomly arranged forming intercrystallite spaces. The crystalline phase of as-synthesized and calcined particles was boehmite and g-Al2O3, respectively as determined by XRD analysis. Here, the preserved particle morphology during boehmite to g-Al2O3 transformation opens a facile route to synthesize g-Al2O3 particles with complex morphology. The specific surface area of synthesized particles is 201 m2/g, which is around five times higher than the conventional g-Al2O3 (Aldrich 544833). Spherical nanostructured g-Al2O3 provides wide potential applications in catalysis due to its high density closed packed structure, large surface area, and high accessibility. Copyright © 2019 BCREC Group. All rights reserved

 

Keywords
Boehmite; CTAB; reverse micelle; spherical nanostructured particle; g-Al2O3

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