X-ray structural modeling of silicate mesoporous mesophase material

Rietveld’s technique in combination with a continuous electron density representation was applied to structural modeling of highly ordered pure siliceous mesoporous mesophase material C16-SiO2-MMM of the MCM-41 type prepared by hydrothermal synthesis in the presence of C16H33N(CH3)3Br. Several impor...

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Bibliographic Details
Published in:Microporous and mesoporous materials 2001-06, Vol.44-45, p.17-23
Main Authors: Solovyov, L.A., Kirik, S.D., Shmakov, A.N., Romannikov, V.N.
Format: Article
Language:English
Subjects:
Electron density distribution
Rietveld’s technique
Silicate mesoporous material
Wall structure
X-ray modeling
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Summary:Rietveld’s technique in combination with a continuous electron density representation was applied to structural modeling of highly ordered pure siliceous mesoporous mesophase material C16-SiO2-MMM of the MCM-41 type prepared by hydrothermal synthesis in the presence of C16H33N(CH3)3Br. Several important characteristics of the material in both as-synthesized and calcined forms were revealed. In particular, it was found that mesopores in the materials are of true hexagonal shape, and the wall electron density seems to be not continuous.
ISSN:1387-1811
1873-3093
DOI:10.1016/S1387-1811(01)00164-0