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.

中文翻译：

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从铅铋共晶中蒸发时碘在熔融石英柱中的热色谱行为

作为许可基于铅铋共晶 (LBE) 的反应器设计的一步，研究了从 LBE 蒸发的碘在熔融石英上的吸附行为。使用惰性和还原性载气，观察到吸附焓为 - 95 至 - 113 kJ mol-1 的沉积。这些沉积物与单一物种相容，暂定为一碘化铋，BiI。当引入氧化条件时，会形成多种挥发性较高的碘物质，吸附焓范围为 - 67 至 - 86 kJ mol-1。根据经验相关性，这些物种之一被确定为单原子碘。这项工作提供了对 LBE/碘气态化学和相关吸附沉积行为的基本理解。