Mechanism of the Acicular Nanosize Mg,Al-Hydrotalcite Grain Growth under Hydrothermal Conditions

Abstract:

Article Preview

The highly pure acicular nanosize Mg,Al-hydrotalcite was synthesized by the one-step liquid reaction method at atmospheric pressure. The favorable growth unit in the reaction liquid, the requirements of Al3+ entering the Mg2+-(OH-)6 octahedral and forming the growth unit M-(OH-1)6 (M=Mg2+, Al3+) and growth mechanism that the nanosize Mg,Al-hydrotalcite crystal embryo follows are studied according to the test results of XRD, TEM, SEM and IR. Later, that the nanosize Mg,Alhydrotalcite crystal embryo growth follows the gathering growth theory was deeply investigated.

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Edited by:

Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li

Pages:

489-494

DOI:

10.4028/www.scientific.net/KEM.280-283.489

Citation:

Q. L. Ren et al., "Mechanism of the Acicular Nanosize Mg,Al-Hydrotalcite Grain Growth under Hydrothermal Conditions", Key Engineering Materials, Vols. 280-283, pp. 489-494, 2005

Online since:

February 2007

Export:

Price:

$38.00

[1] H. Catherine, R. Andre and C. Rudi: Material Letter Vol. 46 (2000), p.160.

[2] F. Bufang: J. Guangxi Chemistry Industry (in Chinese) Vol. 28 (1999), p.29.

[3] M. Chanakya and B. Plum: Synthesis Hydrotalcite ( U.S. Patent, No. 4, 904, 457, U.S. 1990).

[4] M.L. Valcheva-traykova and N.P. Davidova: J Mater. Sci. Vol. 28 (1993), p.2157.

[5] Z.Q. Huang: Electrolyte Liquid Theory (in Chinese) (Science Publications, P.R. China 1983).

[6] W.Z. Zhong and S.S. Hua: Morphology study of Crystal growing (in Chinese) (Science Publications, P.R. China 1999).

[7] Q.L. Ren: Study of a Flame-retardant Agent Mg, Al-hydrotalcite Prepared by Liquid Method (in Chinese) (Doctoral thesis of Xi'an Jiaotong University, P.R. China 2003).

[8] R. Allmann and H.P. Jepsen: N. Jhb. Miner. Mh. Vol. 12 (1969), p.544.

[9] A.A. Chernov and B.K. Vainshtein: Modern Crystallography, Crystal Growth (Springer, 1984). Fig. 7 Reaction time dependence of the crystal size.

In order to see related information, you need to Login.