Please use this identifier to cite or link to this item:
|Title:||Supercritical fluid extraction of surfactant from Si-MCM-41|
|Authors:||Kawi, S. |
|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. https://doi.org/10.1002/aic.690480719|
|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|
|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
WEB OF SCIENCETM
checked on Mar 6, 2019
checked on Dec 21, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.