Effect of process parameters on the synthesis of nanocrystalline magnesium oxide with high surface area and plate-like shape by surfactant assisted precipitation method

被引：57
|
作者：
Meshkani, Fereshteh [1 ]
Rezaei, Mehran [1 ]
机构：
[1] Univ Kashan, Fac Engn, Dept Chem Engn, Catalyst & Adv Mat Res Lab, Kashan, Iran
来源：
POWDER TECHNOLOGY | 2010年 / 199卷 / 02期
基金：
美国国家科学基金会;
关键词：
Nanomaterials; Ceramics; Magnesium oxide; MGO; CATALYSTS; POWDERS;
D O I：
10.1016/j.powtec.2009.12.014
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A surfactant assisted precipitation method was employed for the preparation of nanocrystalline magnesium oxide with high specific surface area and plate-like shape. Ammonium hydroxide and polyvinyl alcohol (PVA) were used as precipitant and polymeric surfactant, respectively. The effects of several process parameters such as refluxing time, refluxing temperature and magnesium oxide to PVA monomer unit mole ratio (MgO/PVA) were investigated on the structural properties of the powders. The obtained results showed that the increase in refluxing time and temperature increased the specific surface area and decreased the crystallite size. The results revealed that the polymeric surfactant (PVA) has a significant effect on the synthesis of MgO nanocrystals and led to obtain a powder with higher surface area and plate-like shape. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：144 / 148
页数：5
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