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KLIKA, Z. DOLEŽALOVÁ WEISSMANNOVÁ, H.
Originální název
The rhodamine B intercalation of montmorillonite.
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
Using photometric methods the dissociation constants and weight fractions of rhodamine B dimer in water solutions at different concentrations were determined. The montmorillonite (SWy) samples were fully intercalated with rhodamine B (RhB) solutions at various monomer/dimer ratios. The amount of rhodamine B in fully intercalated montmorillonite (RhB-SWy) increases with increasing concentration of dye in water solutions, i.e., with increasing dimer/monomer ratio. The sum of exchangeable guest cations in RhB-SWy is approximately constant (0.900 meq g(-1)) for all samples, because RhB-SWy samples with prevailing dye monomer also contain higher amounts of non-exchanged alkali elements. The experimental data are supported by calculated structure models that illustrate the changes in RhB-SWy structure depending on monomeric and/or dimeric arrangement of guests. The analysis of the calculated structure models confirmed the existence of two phases with different basal spacings, d approximately 1.8 and approximately 2.3 nm, revealed by X-ray diffraction.
Klíčová slova
montmorillonite, intercalation, interlayer, dye, rhodamine
Autoři
KLIKA, Z.; DOLEŽALOVÁ WEISSMANNOVÁ, H.
Vydáno
1. 6. 2004
Nakladatel
Elsevier
Místo
ISSN
0021-9797
Periodikum
Journal of Colloid and Interface Science
Ročník
275
Číslo
1
Stát
Spojené státy americké
Strany od
243
Strany do
250
Strany počet
7
BibTex
@article{BUT46610, author="Zdeněk {Klika} and Helena {Doležalová Weissmannová}", title="The rhodamine B intercalation of montmorillonite.", journal="Journal of Colloid and Interface Science", year="2004", volume="275", number="1", pages="243--250", issn="0021-9797" }