The Effect of Synthesis Routes on the Development of Ordered Mesoporous Alumina by Precipitation Method

被引：0

作者：

Ramli, Zainab ^{[1
]}

Saleh, Rozaina ^{[2
]}

机构：

[1] Univ Teknol Malaysia, Ibnu Sina Inst Fundamental Sci Studies, Utm Skudai 81310, Johor, Malaysia

[2] Univ Teknol Malaysia, Fac Sci, Dept Chem, Skudai 81310, Malaysia

来源：

NANOSCIENCE AND NANOTECHNOLOGY | 2009年 / 1136卷

关键词：

Mesoporous Alumina; Precipitation; Aluminium Acetate; GAMMA-ALUMINA;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A precipitation method is proposed for easy, fast and inexpensive method to prepare ordered mesoporous alumina (MA) by using ammonium acetate (NH4(CH3COO)) as precipitating agent. The aluminium acetate (AI(CH3COO)(3)) precipitate obtained was subjected to nitric acid (HNO3) and ultrasonic treatments. The effect of calcination temperature on phase transformation and mesoporosity was investigated by calcining the samples at 650 degrees C and 750 degrees C. N-2-adsorption analysis indicated that samples calcined at 650 degrees C exhibited higher BET surface area (> 200 m(2)/g), higher pore volume and smaller pore size distributions compare to samples calcined at 750 degrees C. FESEM and TEM micrographs of all samples calcined at 650 degrees C showed non-homogenous spherical particles but homogeneous pore size in similar to 8-10 nm. Ultrasonic treatment on MA samples results in narrower pore size distribution with FWHM peak in the range of 2-3.2 nm as compared to MA without ultrasonic treatment giving peak with FWHM 8.2 nm. The results obtained indicate that calcination temperature and ultrasonic treatment are greatly affect on the development of highly ordered and high surface area mesoporous alumina.

引用

页码：26 / +

页数：2

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