TY - JOUR
T1 - Time-resolved in situ x-ray powder diffraction study of the formation of mesoporous silicates
AU - O'Brien, Stephen
AU - Francis, Robin J.
AU - Fogg, Andrew
AU - O'Hare, Dermot
AU - Okazaki, Nanae
AU - Kuroda, Kazuyuki
PY - 1999/1/1
Y1 - 1999/1/1
N2 - In situ, time-resolved energy-dispersive X-ray diffraction has been used to investigate the formation of the mesoporous silicates FSM-16 and MCM-41. The data suggest that the silica-surfactant mesophases formed are highly dependent on the reactant medium, the effect of the silica source being one of the main determining factors. Kanemite, a layered polysilicate, proves to be an excellent silicate source, giving rise to relatively ordered mesophases and subsequent highly ordered mesoporous silicate products. The time-resolved in situ X-ray diffraction data of the kanemite-alkytrimethylammonium system indicated that the silica-surfactant mesophase precursor to FSM-16 forms from a medium containing a number of intercalated silicate phases, while in contrast, the hexagonal mesophase precursor to MCM-41 forms from a medium containing no other ordered silicate-surfactant phases detectable by in situ X-ray diffraction.
AB - In situ, time-resolved energy-dispersive X-ray diffraction has been used to investigate the formation of the mesoporous silicates FSM-16 and MCM-41. The data suggest that the silica-surfactant mesophases formed are highly dependent on the reactant medium, the effect of the silica source being one of the main determining factors. Kanemite, a layered polysilicate, proves to be an excellent silicate source, giving rise to relatively ordered mesophases and subsequent highly ordered mesoporous silicate products. The time-resolved in situ X-ray diffraction data of the kanemite-alkytrimethylammonium system indicated that the silica-surfactant mesophase precursor to FSM-16 forms from a medium containing a number of intercalated silicate phases, while in contrast, the hexagonal mesophase precursor to MCM-41 forms from a medium containing no other ordered silicate-surfactant phases detectable by in situ X-ray diffraction.
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U2 - 10.1021/cm990044a
DO - 10.1021/cm990044a
M3 - Article
AN - SCOPUS:0001599355
SN - 0897-4756
VL - 11
SP - 1822
EP - 1832
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 7
ER -