The utilization of rice husk silica as a catalyst: review and recent progress

Adam, Farook and Appaturi, Jimmy Nelson and Mohamed Iqbal, Mohammad Anwar (2012) The utilization of rice husk silica as a catalyst: review and recent progress. Catalysis Today, 190. pp. 2-14. ISSN 0920-5861

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Abstract

In this review article, we report the recent development and utilization of silica from rice husk (RH)for the immobilization of transition metals and organic moieties. Silicon precursor was obtained in the form of sodium silicate and as rice husk ash (RHA). Sodium silicate was obtained by direct silica extraction from rice husk via a solvent extraction method while rice husk ash was obtained by pyrolyzing the RH in the range of 500–800 ◦C for 5–6 h. Transition metals were immobilized into the silica matrix via the sol–gel technique while the organic moieties were incorporated using a grafting method. 3- (Chloropropyl)triethoxy-silane (CPTES) was used as a bridge to link the organic moieties to the silica matrix. All the catalysts exhibited good physical and catalytic potential in various reactions.

Item Type:	Article (Journal)
Additional Information:	6745/25121
Uncontrolled Keywords:	Rice husk Biomass Silica Catalyst Transition metal
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Biotechnology
Depositing User:	Dr Mohammad Anwar Mohamed Iqbal
Date Deposited:	10 Aug 2012 10:35
Last Modified:	10 Aug 2012 10:36
URI:	http://irep.iium.edu.my/id/eprint/25121

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