Combination of modeling and experiment in structure analysis of intercalated layer silicates

被引:19
作者
Capková, P
Pospisil, M
Weiss, Z
机构
[1] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic
[2] Tech Univ Ostrava, Ostrava 70833, Czech Republic
关键词
intercalated layer silicates; structure analysis modeling; molecular mechanics; molecular dynamics;
D O I
10.1007/s00894-002-0106-9
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A strategy for the structure analysis of intercalated layer silicates based on a combination of modeling (i.e. force field calculations) and experiment is presented. Modeling in conjunction with experiment enables us to analyze the disordered intercalated structures of layer silicates where conventional diffraction analysis fails. Experiment plays a key role in the modeling strategy and in corroboration of the modeling results. X-ray powder diffraction and IR spectroscopy were found to be very useful complementary experiments to molecular modeling. Molecular mechanics and molecular dynamics simulations were carried out in the Cerius(2) and Materials Studio modeling environments. An overview is given of the structures of layer silicates, especially smectites intercalated with various inorganic and organic guest species. Special attention is paid to the ordering of guests in the interlayer space, as it is important for the practical applications of these intercalates, where the interlayer porosity, photofunctions, etc. must be controlled.
引用
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页码:195 / 205
页数:11
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