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Hidroksida Berlapis Ganda ZnCrCI: Kesan Haba Terhadap Luas Perm.ukaan dan Keliangan


Citation

Hussien, Mohd Zobir and Zainal, Zulkarnain and Ibrahim, Ramli and Hii, Hiong Swee (1996) Hidroksida Berlapis Ganda ZnCrCI: Kesan Haba Terhadap Luas Perm.ukaan dan Keliangan. Pertanika Journal of Science & Technology, 4 (1). pp. 31-39. ISSN 0128-7680

Abstract / Synopsis

ZnCrCI layered double hydroxides, with Zn/Cr ratios (R) 3 and 4 were prepared by a coprecipitation method and heat treated samples were subsequently prepared. Their bulk structure was investigated by X-ray diffraction and surface area techniques. X-ray diffraction analysis showed that the layered double hydroxide phase remained unchanged upon heating up to 250°C for 5 h in an oven at atmospheric pressure. However, new phases, namely spinel-like and ZnO phases appeared when the samples were heated at 350°C and above for the same duration. The specific surface areas decreased with increasing temperature (between 450850° C) for both R values but no trend was observed for temperatures between 250-350°C. Average pore diameter was found to be optimum at 550°C and 450°C for R = 3 and 4, respectively.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Environmental Studies
Publisher: Universiti Putra Malaysia Press
Keywords: hidroksida berlapis ganda, luas permukaan, keliangan
Depositing User: Nur Izzati Mohd Zaki
Date Deposited: 24 Nov 2009 07:54
Last Modified: 27 May 2013 07:06
URI: http://psasir.upm.edu.my/id/eprint/3225
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