Please use this identifier to cite or link to this item:
Title: Supercritical fluid extraction of surfactant from Si-MCM-41
Authors: Kawi, S. 
Lai, M.W.
Issue Date: 1-Jul-2002
Citation: Kawi, S., Lai, M.W. (2002-07-01). Supercritical fluid extraction of surfactant from Si-MCM-41. AIChE Journal 48 (7) : 1572-1580. ScholarBank@NUS Repository.
Abstract: Supercritical fluid extraction has been carried out on as-synthesized Si-MCM-41 in a study to evaluate the efficiency of SFE in the recovery of the organic template cetyltrimethylammonium hydroxide (CTMAOH) from the pores of Si-MCM-41. Effects of different extraction parameters on the extraction efficiencies were investigated. The results show that modified CO2 is required to extract CTMAOH. High extraction efficiencies are obtained at 85°C and at both 100 and 350 bar, while the lowest efficiency is obtained at 150 bar. The extraction efficiency also increases initially on increasing the modifier concentration and reaches a limiting value when the concentration is increased further. Among a series of modifiers studied, methanol and acidic methanol (modified with acetic acid) are effective. The modifiers used in the extraction have a significant impact on the properties of the final material. The compound extracted was characterized and identified as CTMAOH.
Source Title: AIChE Journal
ISSN: 00011541
DOI: 10.1002/aic.690480719
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 24, 2019


checked on Mar 6, 2019

Page view(s)

checked on Dec 21, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.