Microwave - Assisted Synthesis of Hydrotalcite : X-Ray Diffraction, Surface Area and Porosity Studies

Mohd. Zobir bin Hussein, Zulkarnain Zainal, Ow Wee Shing Tat and Ramli Ibrahim

Materials Chemistry Research Group, Department of Chemistry, Universiti Putra Malaysia - 43400UPM, Serdang, Selangor Malaysia.

ABSTRACT:

Hydrotalcite, Mg1-x Alx(OH)2(CO3)x/2.mH2O is a layered compound in which carbonate and water molecules are present in the interlayer of brucite like [Mg(OH)2]n structure. The material was synthesised by microwave-assisted method at various aging times. The atomic ratio, R=(Mg2+/AI3+) of 3, 4 and 6 were chosen in this study. The resulting synthetic materials afford well crystallised hydrotalcite even at a very short period of microwave exposure time of about 0.5 mins. Better crystallinity was observed as the exposure time increased for all the Rs, except for R=6. In general the surface area and porosity of the synthetic materials increased with the microwave exposure time.

KEYWORDS:

Hydrotalcite; layered double hydroxide; XRD; Surface area; porosity

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Copy the following to cite this article: Hussein M. Z. B, Zainal Z, Tat O. W. S, Ibrahim R. Microwave - Assisted Synthesis of Hydrotalcite : X-Ray Diffraction, Surface Area and Porosity Studies. Orient J Chem 1999;15(1).

Copy the following to cite this URL: Hussein M. Z. B, Zainal Z, Tat O. W. S, Ibrahim R. Microwave - Assisted Synthesis of Hydrotalcite : X-Ray Diffraction, Surface Area and Porosity Studies. Orient J Chem 1999;15(1). Available from: http://www.orientjchem.org/?p=36793