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Synthesis of VTES/SBA-15 Prepared by Post-Grafting: XRD Characteristics on the Effect of Calcination Properties
Abstract:
Functionalization of Santa Barbara Amorphous-15 (SBA-15) with vinyltriethoxysilane (VTES) via post-grafting method has been synthesized with the effect of calcination time span and temperature range. X-ray powder diffraction has been a means to evident the incorporation of VTES functional groups and to characterize the peak diffraction pattern. The samples of parent SBA-15 have been treated in different calcination temperature and time, ranging from 400°C to 800°C and 2 hr to 8 hr, respectively. The XRD results show that two dimensional p6mm of high order hexagonal mesoscopic structure of VTES/SBA-15 could not be retained at higher temperature of calcination than 700°C. However, the higher time spans of calcination up to 8 hrs preserve the long-range order of functionalized SBA-15.
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103-107
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May 2013
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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