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Statements

Subject Item
n2:RIV%2F61989100%3A27360%2F09%3A00022145%21RIV10-MSM-27360___
rdf:type
n11:Vysledek skos:Concept
dcterms:description
The protonation of methylene blue (MB) was studied in variously acid aqueous solutions using Vis spectrophotometry. The cations of MB present in acid aqueous solutions, i.e. MB+, (MB+)n and MBH2+, were intercalated into Ca-montmorillonite (SAz-1). Adsorbed amounts of dye were evaluated by Vis spectrophotometry at two wavelengths; at 675 nm (monomeric form MB+) and at 748 nm (protonated form MBH2+). By this way two independent measurements of equilibrium dye concentration in acid aqueous solutions were obtained and used for the evaluation of the adsorbed amount of methylene blue into SAz-1. Adsorption curves determined in acid aqueous solutions consist of two separated steps whereas the adsorption curve determined in neutral aqueous solution has only one step. Intercalated MB/SAz-1 samples were studied using X-ray powder diffraction method and SEM. It was found that the first step of adsorption curve relates to ion exchange of MB cations with interlayer Ca2+ cations and the second one relates to MB ad The protonation of methylene blue (MB) was studied in variously acid aqueous solutions using Vis spectrophotometry. The cations of MB present in acid aqueous solutions, i.e. MB+, (MB+)n and MBH2+, were intercalated into Ca-montmorillonite (SAz-1). Adsorbed amounts of dye were evaluated by Vis spectrophotometry at two wavelengths; at 675 nm (monomeric form MB+) and at 748 nm (protonated form MBH2+). By this way two independent measurements of equilibrium dye concentration in acid aqueous solutions were obtained and used for the evaluation of the adsorbed amount of methylene blue into SAz-1. Adsorption curves determined in acid aqueous solutions consist of two separated steps whereas the adsorption curve determined in neutral aqueous solution has only one step. Intercalated MB/SAz-1 samples were studied using X-ray powder diffraction method and SEM. It was found that the first step of adsorption curve relates to ion exchange of MB cations with interlayer Ca2+ cations and the second one relates to MB ad
dcterms:title
Protonation of methylene blue and its intercalation into montmorillonite. Protonation of methylene blue and its intercalation into montmorillonite.
skos:prefLabel
Protonation of methylene blue and its intercalation into montmorillonite. Protonation of methylene blue and its intercalation into montmorillonite.
skos:notation
RIV/61989100:27360/09:00022145!RIV10-MSM-27360___
n3:aktivita
n12:Z n12:P
n3:aktivity
P(GA205/08/0869), Z(MSM6198910016)
n3:dodaniDat
n7:2010
n3:domaciTvurceVysledku
n4:4553659 n4:2173220
n3:druhVysledku
n17:D
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
337316
n3:idVysledku
RIV/61989100:27360/09:00022145
n3:jazykVysledku
n19:eng
n3:klicovaSlova
Protonated methylene blue; Intercalation; Montmorillonite
n3:klicoveSlovo
n10:Montmorillonite n10:Protonated%20methylene%20blue n10:Intercalation
n3:kontrolniKodProRIV
[0AA16CAB1808]
n3:mistoKonaniAkce
Smolenice
n3:mistoVydani
Bratislava
n3:nazevZdroje
International doctoral seminar
n3:obor
n21:CF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n20:GA205%2F08%2F0869
n3:rokUplatneniVysledku
n7:2009
n3:tvurceVysledku
Pustková, Petra Dudová, M. Klika, Zdeněk
n3:typAkce
n18:EUR
n3:zahajeniAkce
2009-05-17+02:00
n3:zamer
n22:MSM6198910016
s:numberOfPages
5
n9:hasPublisher
Slovenská technická univerzita v Bratislave
n8:isbn
978-80-8096-088-9
n15:organizacniJednotka
27360