Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 96, Issue 2, Pages 375-382Publisher
SPRINGER
DOI: 10.1007/s10973-008-9055-6
Keywords
CTAB; GC-MS; MAS NMR; MCM-41; template removal
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Thermal evacuation of a surfactant template from pure siliceous MCM-41 and MCM-41 containing aluminium in hydrogen flow was investigated. Micelle templated MCM-41 were prepared using hexadecyltrimethylammonium bromide (CTAB). The products of thermal surfactant degradation outside and inside pores were identified at various temperatures using C-13 solid-state nuclear magnetic resonance (NMR) spectroscopy, gas chromatography coupled with mass spectrometer (GC-MS) and temperature programmed desorption coupled with mass spectrometer (TPD-MS). The GC-MS and C-13 MAS NMR results obtained from this study provide an insight into the mechanism of surfactant transformation during MCM-41 synthesis on molecular level.
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