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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F05%3A00015442%21RIV06-GA0-22340___
rdf:type
n12:Vysledek skos:Concept
dcterms:description
Značný počet reakčních systémů vykazujících oscilace v průtočném reaktoru je založeno na oxidaci sloučenin síry jako jsou siřičitany a thiosírany různými oxidanty. V naší předchozí práci prezentované rovněž na SSCHE jsme zahájili výzkum mechanismu oxidace těchto sloučenin peroxidem vodíku. Metody určení kinetiky doposud užívané se opíraly hlavně o pH-metrii a zde byly doplněny o infračervenou spektroskopii (FT-IR/ATR). Tato měření poskytují cenné a velmi podrobné informace o časovém průběhu thiosíranu, siřičitanu, tetrathionanu a trithionanu. Uvádíme předběžné výsledky, které ukazují na dobrou shodu s experimenty ve vsádkovém reaktoru. A number of reaction systems that provide oscillatory and other complex dynamics in a flow-through reactor is based on oxidation of specific compounds of sulfur, such as sulfite and thiosulfate, by various oxidation agents. In our previous work presented also at SSCHE we started examining mechanisms of oxidation of these compounds by hydrogen peroxide. Techniques used so far for the investigation of reaction kinetics, which involved mainly the use of a pH-meter, were extended by measurements of time evolution of concentration of major components with attenuated total internal reflectance infrared spectroscopy (FT-IR/ATR). These measurements provide valuable and rather detailed information on time evolution of thiosulfate, sulfite, sulfate, tetrathionate, and trithionate. We present preliminary results in graphical form, which show very good agreement with experiments in batch-operated reactions of individual components. A number of reaction systems that provide oscillatory and other complex dynamics in a flow-through reactor is based on oxidation of specific compounds of sulfur, such as sulfite and thiosulfate, by various oxidation agents. In our previous work presented also at SSCHE we started examining mechanisms of oxidation of these compounds by hydrogen peroxide. Techniques used so far for the investigation of reaction kinetics, which involved mainly the use of a pH-meter, were extended by measurements of time evolution of concentration of major components with attenuated total internal reflectance infrared spectroscopy (FT-IR/ATR). These measurements provide valuable and rather detailed information on time evolution of thiosulfate, sulfite, sulfate, tetrathionate, and trithionate. We present preliminary results in graphical form, which show very good agreement with experiments in batch-operated reactions of individual components.
dcterms:title
DETAILED MECHANISTIC MODEL OF OSCILLATORY REACTIONS INVOLVING HYDROGEN PEROXIDE, SULFITE AND THIOSULFATE Detailní mechnistický model oscilačních reakcí zahrnujících peroxid vodíku, siřičitan a thiosíran DETAILED MECHANISTIC MODEL OF OSCILLATORY REACTIONS INVOLVING HYDROGEN PEROXIDE, SULFITE AND THIOSULFATE
skos:prefLabel
DETAILED MECHANISTIC MODEL OF OSCILLATORY REACTIONS INVOLVING HYDROGEN PEROXIDE, SULFITE AND THIOSULFATE Detailní mechnistický model oscilačních reakcí zahrnujících peroxid vodíku, siřičitan a thiosíran DETAILED MECHANISTIC MODEL OF OSCILLATORY REACTIONS INVOLVING HYDROGEN PEROXIDE, SULFITE AND THIOSULFATE
skos:notation
RIV/60461373:22340/05:00015442!RIV06-GA0-22340___
n3:aktivita
n13:Z n13:P
n3:aktivity
P(GA203/03/0488), P(GP203/02/D051), Z(MSM6046137306), Z(MSM6046137307)
n3:dodaniDat
n14:2006
n3:domaciTvurceVysledku
n10:1583980 n10:2329689 n10:7290659
n3:druhVysledku
n17:O
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
517455
n3:idVysledku
RIV/60461373:22340/05:00015442
n3:jazykVysledku
n18:eng
n3:klicovaSlova
oscillatory reactions; kinetics; FT-IR/ATR spectrometry
n3:klicoveSlovo
n9:oscillatory%20reactions n9:FT-IR%2FATR%20spectrometry n9:kinetics
n3:kontrolniKodProRIV
[8AD7DCC6C75A]
n3:obor
n4:CI
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n15:GA203%2F03%2F0488 n15:GP203%2F02%2FD051
n3:rokUplatneniVysledku
n14:2005
n3:tvurceVysledku
Schreiber, Igor Voslař, Michal Matějka, Pavel
n3:zamer
n6:MSM6046137306 n6:MSM6046137307
n16:organizacniJednotka
22340