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Statements

Subject Item
n2:RIV%2F67985858%3A_____%2F12%3A00381107%21RIV13-GA0-67985858
rdf:type
n13:Vysledek skos:Concept
dcterms:description
The photocatalytic decomposition of indigo-5,5-disulfonic acid (indigocarmine) and indigo-6,6-dicarboxylic acid has been studied using TiO2 suspension and the polychromatic irradiation of a high-pressure Hg arc lamp. The dyestuffs were dissolved in aqueous medium at pH = 10 and photolyzed in a back-flow tubular photoreactor. The reaction products were determined by HPLC, NMR and MS spectroscopy. Two main photoproducts obtained from indigocarmine (2-amino-5-sulfobenzoic acid and isatine-5-sulfonic acid) were detected. The photocatalysis of indigo-6,6-dicarboxylic acid gave aminoterephthalic acid and isatine-6-carboxylic acid as two main products. The quantitative analyses of reaction products were performed with UV/Vis and HPLC using chemical standards. A stoichiometric model and kinetic description of photocatalysis of sulfo and carboxy indigo dyes are suggested. The effect of hydroxide and carbonate anions on the rate of photocatalysis was also studied. The photocatalytic decomposition of indigo-5,5-disulfonic acid (indigocarmine) and indigo-6,6-dicarboxylic acid has been studied using TiO2 suspension and the polychromatic irradiation of a high-pressure Hg arc lamp. The dyestuffs were dissolved in aqueous medium at pH = 10 and photolyzed in a back-flow tubular photoreactor. The reaction products were determined by HPLC, NMR and MS spectroscopy. Two main photoproducts obtained from indigocarmine (2-amino-5-sulfobenzoic acid and isatine-5-sulfonic acid) were detected. The photocatalysis of indigo-6,6-dicarboxylic acid gave aminoterephthalic acid and isatine-6-carboxylic acid as two main products. The quantitative analyses of reaction products were performed with UV/Vis and HPLC using chemical standards. A stoichiometric model and kinetic description of photocatalysis of sulfo and carboxy indigo dyes are suggested. The effect of hydroxide and carbonate anions on the rate of photocatalysis was also studied.
dcterms:title
Photocatalysis of Sulfo and Carboxy Derivatives of Indigo in a TiO2 Slurry with the Use of Polychromatic Irradiation Photocatalysis of Sulfo and Carboxy Derivatives of Indigo in a TiO2 Slurry with the Use of Polychromatic Irradiation
skos:prefLabel
Photocatalysis of Sulfo and Carboxy Derivatives of Indigo in a TiO2 Slurry with the Use of Polychromatic Irradiation Photocatalysis of Sulfo and Carboxy Derivatives of Indigo in a TiO2 Slurry with the Use of Polychromatic Irradiation
skos:notation
RIV/67985858:_____/12:00381107!RIV13-GA0-67985858
n13:predkladatel
n16:ico%3A67985858
n3:aktivita
n9:I n9:S n9:P
n3:aktivity
I, P(GA104/09/0694), S
n3:cisloPeriodika
1
n3:dodaniDat
n14:2013
n3:domaciTvurceVysledku
n17:9345531
n3:druhVysledku
n6:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
158535
n3:idVysledku
RIV/67985858:_____/12:00381107
n3:jazykVysledku
n7:eng
n3:klicovaSlova
indigo derivatives; 2-amino-5-sulfobenzoic acid; aminoterephthalic acid; isatine derivatives; kinetic model of heterogeneous photocatalysis
n3:klicoveSlovo
n11:aminoterephthalic%20acid n11:kinetic%20model%20of%20heterogeneous%20photocatalysis n11:2-amino-5-sulfobenzoic%20acid n11:isatine%20derivatives n11:indigo%20derivatives
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[B9E42F9D90DE]
n3:nazevZdroje
Reaction Kinetics Mechanism and Catalysis
n3:obor
n5:CC
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n19:GA104%2F09%2F0694
n3:rokUplatneniVysledku
n14:2012
n3:svazekPeriodika
107
n3:tvurceVysledku
Hrdina, R. Šolcová, Olga Tichý, L. Machalický, O. Tomica, M.
n3:wos
000308533000006
s:issn
1878-5190
s:numberOfPages
15
n18:doi
10.1007/s11144-012-0442-4