Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.talanta.2004.12.057
Title: Extraction of cationic surfactant templates from mesoporous materials by CH3OH-modified CO2 supercritical fluid
Authors: Huang, L.
Kawi, S. 
Poh, C.
Hidajat, K. 
Ng, S.C. 
Keywords: Cationic
Mesoporous materials
Supercritical fluid extraction
Template
Issue Date: 15-May-2005
Citation: Huang, L., Kawi, S., Poh, C., Hidajat, K., Ng, S.C. (2005-05-15). Extraction of cationic surfactant templates from mesoporous materials by CH3OH-modified CO2 supercritical fluid. Talanta 66 (4) : 943-951. ScholarBank@NUS Repository. https://doi.org/10.1016/j.talanta.2004.12.057
Abstract: Extraction of cationic surfactant templates from MCM-41, MCM-48, SBA-1 and SBA-3 has been conducted using CH3OH-modified CO2 supercritical fluid. The supercritical fluid extraction (SFE) has been integrated with thermogravimetry (TG), X-ray diffraction (XRD) and N2 adsorption-desorption to evaluate extraction efficiency and structural stability of mesoporous materials. Experiments of optimization indicate that the conditions of 90 bar, 85 °C, CH3OH/CO2 = 0.1/1.0 ml/min and 3 h are most suitable for the SFE of cationic templates. 76-95% of the cationic templates can be extracted from the mesoporous materials. XRD and N2 adsorption-desorption studies illustrate that SFE possesses some advantages over calcination in maintaining mesoporous uniformity and structural stability when used to remove templates. The impact of curing on mesoporous structure is also dealt with. © 2005 Elsevier B.V. All rights reserved.
Source Title: Talanta
URI: http://scholarbank.nus.edu.sg/handle/10635/88886
ISSN: 00399140
DOI: 10.1016/j.talanta.2004.12.057
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

10
checked on Jun 17, 2018

WEB OF SCIENCETM
Citations

9
checked on Jun 4, 2018

Page view(s)

25
checked on Apr 20, 2018

Google ScholarTM

Check

Altmetric


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