Thermochromatographic behavior of iodine in fused silica columns when evaporated from lead–bismuth eutectic

Erik Karlsson, Jörg Neuhausen, Robert Eichler, Alexander Aerts, Ivan Danilov, Alexander Vögele, Andreas Türler

    Research outputpeer-review


    As a step toward licensing a lead–bismuth eutectic (LBE) based reactor design, the adsorption behavior of iodine evaporated from LBE on fused silica was examined. Using inert and reducing carrier gases, depositions with an adsorption enthalpy of − 95 to − 113 kJ mol ⁻¹ were observed. These depositions are compatible with a single species, tentatively identified as bismuth monoiodide, BiI. When introducing oxidizing conditions, multiple iodine species with higher volatility form, with adsorption enthalpies ranging from − 67 to − 86 kJ mol ⁻¹ . Based on an empirical correlation one of these species was identified as monatomic iodine. This work provides fundamental understanding of the LBE/iodine gaseous chemistry and related adsorption deposition behavior.
    Original languageEnglish
    Pages (from-to)1249-1258
    Number of pages10
    JournalJournal of Radioanalytical and Nuclear Chemistry
    Issue number2
    StatePublished - Nov 2020

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