Perera Suvenika, Shaurya Alok, Zeppuhar Andrea, Chen Fu, Zavalij Peter Y, Gaskell Karen, Isaacs Lyle
Department of Chemistry and Biochemistry, University of Maryland at College Park, College Park, MD, 20742, United States.
Chemistry. 2024 Nov 21;30(65):e202403176. doi: 10.1002/chem.202403176. Epub 2024 Nov 5.
Nuclear energy makes large contributions toward meeting global energy needs, but societal concerns remain high given the impacts of the intended release of radioactive materials including I and I. In this paper we explore the use of a homologous series of acyclic CB[n] type hosts (H1-H4) as adsorbents of iodine from the vapor phase. We find that H2-H4, but not H1 - perform well in this application with uptake capacities of 2.2 g g, 1.5 g g, and 1.9 g g, respectively. The chemisorptive uptake process involves partial oxidation of catechol walled H2 to quinone walled host and capture of I and I . Solid H2 can be regenerated by treatment with NaSO and reused at least five times. The x-ray crystal structure of H2 is also reported.
核能在满足全球能源需求方面做出了巨大贡献，但鉴于包括碘-129和碘-131在内的放射性物质预期释放所带来的影响，社会关注度依然很高。在本文中，我们探索了一系列无环CB[n]型主体（H1-H4）作为气相碘吸附剂的用途。我们发现，H2-H4在该应用中表现良好，而H1则不然，其吸附容量分别为2.2 g g、1.5 g g和1.9 g g。化学吸附过程涉及儿茶酚壁的H2部分氧化为醌壁主体，并捕获碘-129和碘-131。固体H2可用亚硫酸钠处理再生，且至少可重复使用五次。此外还报道了H2的X射线晶体结构。
