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DETAILED MECHANISTIC MODEL OF OSCILLATORY REACTIONS INVOLVING HYDROGEN PEROXIDE, SULFITE AND THIOSULFATE

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F05%3A00015442" target="_blank" >RIV/60461373:22340/05:00015442 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    DETAILED MECHANISTIC MODEL OF OSCILLATORY REACTIONS INVOLVING HYDROGEN PEROXIDE, SULFITE AND THIOSULFATE

  • Original language 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 presentedalso 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.

  • Czech name

    Detailní mechnistický model oscilačních reakcí zahrnujících peroxid vodíku, siřičitan a thiosíran

  • Czech 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.

Classification

  • Type

    O - Miscellaneous

  • CEP classification

    CI - Industrial chemistry and chemical engineering

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů