IIUM Repository

Porosity development in activated carbon from palm kernel and coconut shell by chemical activation method

Rahman, Md. Mokhlesur and Adil, Mohammad and Yusof, Alias Mohd (2012) Porosity development in activated carbon from palm kernel and coconut shell by chemical activation method. Research Journal of Chemistry and Environment, 16 (4). pp. 189-191. ISSN 0972-0626

[img]
Preview
PDF (Porosity development in activated carbon from palm kernel and coconut shell by chemical activation method) - Published Version
Download (70kB) | Preview

Abstract

Several series of activated carbons have been prepared by chemical activation with phosphoric acid from palm kernel and coconut shells to study the effect of preparation variables such as precursor, precursor size, pretreatment, impregnation condition and ratio and finally the carbonization temperature on specific surface area and pore distribution of the resulting active carbon. Both precursors showed similar N2 adsorption isotherms, an upward deviation at high relative pressure, revealing the presence of mesorpores when carbonized at 5000 C with H3PO4. The bigger hysteresis loop indicates higher mesoporosity in coconut shell derived carbon whereas palm kernel shell derived carbon showed a higher macroporosity nature Prolong sinking of the precursor in H3PO4 impregnation solution followed by carbonization at moderate temperature (450-500 0C) produces carbon of high surface area with a higher macroporosity. The lowering of precursor size favors micropore development and semi-drying of the impregnation chemical prior to carbonization diminishes the macroporosity to a great extent. Thus an appropriate choice of preparation variables enables us to produce high surface area of micro and mesoporous activated carbon.

Item Type: Article (Journal)
Additional Information: 5269/27411
Uncontrolled Keywords: activated carbon, chemical activation, phosphoric acid, palm kernel, coconut shell.
Subjects: Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Pharmacy > Department of Pharmaceutical Chemistry
Depositing User: Dr Mohd Mokhlesur Rahman
Date Deposited: 12 Dec 2012 10:57
Last Modified: 01 Apr 2013 20:06
URI: http://irep.iium.edu.my/id/eprint/27411

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year