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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 18, 2003
Accepted August 11, 2003

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Synthesis of Mesoporous Alumina by using a Cost-effective Template

Changmook Kim Younghun Kim Pil Kim Jongheop Yi^†

School of Chemical Engineering, Seoul National University, Shillim-dong, Kwanak-gu, Seoul 151-742, Korea

Korean Journal of Chemical Engineering, November 2003, 20(6), 1142-1144(3), 10.1007/BF02706951

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Abstract

A salt of stearic acid, i.e., magnesium stearate [(C₁₇H₃₅COO)₂Mg], can be used as a chemical template for the formation of mesoporous alumina, and is a less expensive reagent than stearic acid. Mesoporous alumina prepared using this cost-effective surfactant shows similar pore properties with respect to pore size (3.5 nm) and surface area (above 300 m²/g) to that prepared using stearic acid. In addition, textural porosity, arising from non-crystalline intraaggregate voids and spaces, was effectively removed by the addition of magnesium nitrate. The entire transformation from aluminum hydroxide to active alumina was performed at 550 ℃, and the crystallinity of the product was confirmed by powder XRD analysis. ²⁷Al MAS NMR result shows the phase of mesoporous alumina is the γ-alumina form.

Keywords

Cost-effective Template Magnesium Stearate Mesoporous Alumina Stearic Acid

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