✦ LIBER ✦

Using granular activated carbon prepared from oil palm shell by ZnCl2 and physical activation for methane adsorption

✍ Scribed by Arash Arami-Niya; Wan Mohd Ashri Wan Daud; Farouq S. Mjalli

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 390 KB
Volume: 89
Category: Article
ISSN: 0165-2370
DOI: 10.1016/j.jaap.2010.08.006

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✦ Synopsis

Granular activated carbons for methane adsorption have been prepared by impregnation of oil palm shell with various solutions of ZnCl 2 followed by heat treatment at 500 • C under a flow of nitrogen. For this precursor, large micropore volume of micropores (with a very small volume of mesopores and macropores) was obtained with intermediate ZnCl 2 mass ratio. Methane capacity at 800 mmHg was in the range of 10-12 cm 3 /g. All the samples were further activated by reaction under a flow of carbon dioxide. Although such activation resulted in a decrease in the BET surface area, average pore width, micropore and pore volume (except very low impregnation ratio, X Zn = 0.15 g/g), however, there was a 100% net increase in the methane capacity.

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