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Correlation bands, size-dependence effects

Size-Dependence Effects within Correlation Bands... [Pg.77]

Attempts have been made to correlate this behavior with the ring sizes and average T-O-T angles present in zeolites of different topologies [300]. However, the observed frequency dependencies were not fairly uniform. In particular, for A-type zeolites a trend reversed to that for faujasites has been observed by changing the nsi/n i ratio systematically [290]. Hence, the frequency shifts obviously arise from different effects of structural changes, altered nature of normal modes, and electron density distribution and from combinations of these effects. Instead of the band shift observed for aliunimun-rich samples, for highly dealuminated faujasites the band width of the most prominent peak was discovered to reflect the aliuninum content at low levels [295]. [Pg.60]

See other pages where Correlation bands, size-dependence effects is mentioned: [Pg.267]    [Pg.28]    [Pg.361]    [Pg.364]    [Pg.377]    [Pg.245]    [Pg.23]    [Pg.145]    [Pg.322]    [Pg.22]    [Pg.217]    [Pg.408]    [Pg.197]    [Pg.98]    [Pg.81]    [Pg.291]    [Pg.680]    [Pg.197]    [Pg.153]    [Pg.5973]    [Pg.361]    [Pg.540]    [Pg.96]    [Pg.94]    [Pg.200]    [Pg.205]    [Pg.5972]    [Pg.133]    [Pg.185]    [Pg.44]    [Pg.802]    [Pg.179]    [Pg.624]    [Pg.222]    [Pg.931]    [Pg.858]    [Pg.314]    [Pg.46]    [Pg.143]    [Pg.150]    [Pg.319]   
See also in sourсe #XX -- [ Pg.88 ]



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