Synthesis, Properties and Characterisation of Manganeous Layered Double Hydroxides Using In Situ X-Ray Techniques

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Synthetic manganeous Layered Double Hydroxides of the Hydrotalcite- and Shigaite- type were prepared by the coprecipitation method. The thermal behaviour of two compounds, [Mn6Al3(OH)18] [(SO4)2Na·12H2O] and [Mn6Al3(OH)18] [Cl·4H2O] was investigated by several experimental techniques. Thermal analysis and in-situ X-ray diffractometry show several dehydration stages of the synthesis products in the temperature range of 25 < T < 170°C followed by decomposition at temperatures above 200°C.

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Periodical:

Materials Science Forum (Volumes 443-444)

Edited by:

Yvonne Andersson, Eric J. Mittemeijer and Udo Welzel

Pages:

307-310

Citation:

U. König and H. Pöllmann, "Synthesis, Properties and Characterisation of Manganeous Layered Double Hydroxides Using In Situ X-Ray Techniques", Materials Science Forum, Vols. 443-444, pp. 307-310, 2004

Online since:

January 2004

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$38.00

[1] CAVANI, F., TRIFIRO, F. & VACCARI, A. (1991): Catalysis Today, Vol. 11, 173-301.

[2] ALLMANN, R. (1970): Chimica, Vol. 24, 3, 99-107.

[3] COOPER & HAWTHORNE (1996): Canadian Mineralogist, 34, 91-97.

[4] WANG ET AL. (2001): Chem. Mater., Vol. 13, 145-150.

[5] MIYATA (1975): Clays and clay minerals, Vol. 23, 369-375.

[6] PARTHASARATHI ET AL (2000): Bull. Mater. Sci., Vol. 23, No. 2, 141-145. Fig. 4 TG curve of Shigaite-Na.