The Influence of Synthesis Conditions on the Structure of Mg-Al Layered Double Hydroxide

Xiao Bo Wang; Zhi Min Bai; Zhi Yong He; Qi Fu Zhang; Fen Ling Qian

doi:10.4028/www.scientific.net/KEM.655.267

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The Influence of Synthesis Conditions on the Structure of Mg-Al Layered Double Hydroxide
p.267

HomeKey Engineering MaterialsKey Engineering Materials Vol. 655The Influence of Synthesis Conditions on the...

The Influence of Synthesis Conditions on the Structure of Mg-Al Layered Double Hydroxide

Abstract:

In this paper, the influence of synthetic conditions (the molar ratio of Mg²⁺ and Al³⁺; the concentration of cationic; the aging temperature and time) on the grain size and crystallinity of Mg-Al layered double hydroxide (LDH) has been investigated systematically based on the orthogonal experiment. Mg-Al LDH was prepared using magnesite through chemical precipitation and hydrothermal methods. The samples were characterized by X-ray diffraction (XRD). The grain size which along a and c axis were calculated through Scherrer formula. The experimental results showed that the grain size along a axis increased with the rise of synthesis temperature, while the grain size along c axis reduced. It was also found that the aging temperature and time had a great influence on the crystallinity of Mg-Al LDH.

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Proceedings of the International Congress on Ceramics V

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Periodical:

Key Engineering Materials (Volume 655)

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267-270

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.655.267

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Online since:

July 2015

Authors:

Xiao Bo Wang*, Zhi Min Bai, Zhi Yong He, Qi Fu Zhang, Fen Ling Qian

Keywords:

Crystallinity, Grain Size, Layered Double Hydroxide, Magnesite, Orthogonal Experiment

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