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Subject Item
n2:RIV%2F60461373%3A22340%2F05%3A00014620%21RIV06-GA0-22340___
rdf:type
skos:Concept n8:Vysledek
dcterms:description
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. 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.
dcterms:title
Detailní mechnistický model oscilačních reakcí zahrnujících peroxid vodíku, siřičitan a thiosíran DETAILED MECHANISTIC MODEL OF OSCILLATORY REACTIONS INVOLVING HYDROGEN PEROXIDE, SULFITE AND THIOSULFATE 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/60461373:22340/05:00014620!RIV06-GA0-22340___
n4:strany
135/1-135/13
n4:aktivita
n10:P n10:Z
n4:aktivity
P(GA203/03/0488), Z(MSM6046137306), Z(MSM6046137307)
n4:dodaniDat
n11:2006
n4:domaciTvurceVysledku
n14:2329689 n14:1583980 n14:7290659
n4:druhVysledku
n15:D
n4:duvernostUdaju
n22:S
n4:entitaPredkladatele
n6:predkladatel
n4:idSjednocenehoVysledku
517454
n4:idVysledku
RIV/60461373:22340/05:00014620
n4:jazykVysledku
n12:eng
n4:klicovaSlova
oscillatory reactions; kinetics; FT-IR/ATR spectrometry
n4:klicoveSlovo
n13:FT-IR%2FATR%20spectrometry n13:kinetics n13:oscillatory%20reactions
n4:kontrolniKodProRIV
[586B20A0C863]
n4:mistoKonaniAkce
Tatranské Matliare, Slovensko
n4:mistoVydani
Bratislava
n4:nazevZdroje
Proc. of 32th International Conference of Slovak Society of Chemical Engineering.
n4:obor
n5:CI
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n18:GA203%2F03%2F0488
n4:rokUplatneniVysledku
n11:2005
n4:tvurceVysledku
Matějka, Pavel Voslař, Michal Schreiber, Igor
n4:typAkce
n21:WRD
n4:zahajeniAkce
2005-05-23+02:00
n4:zamer
n17:MSM6046137306 n17:MSM6046137307
s:numberOfPages
13
n9:hasPublisher
Slovenská technická univerzita v Bratislave
n19:isbn
80-227-2224-3
n20:organizacniJednotka
22340