Radioiodine accumulates in aqueous solutions and off-gas streams during nuclear fuel reprocessing. In addition, radioiodine is highly mobile in geological environments. Most of the radioiodine can be captured during fuel reprocessing in off-gas streams using solid sorbents and scrubbing solutions. Once iodine is captured, it must be stored in a durable form for eventual disposal. Iodosodalite has been investigated as a waste form for radioiodine, however these synthesis processes often result in mixed products and iodine volatilization during consolidation. This paper proposes a novel approach to synthesizing iodosodalite utilizing a sol–gel method followed by heat treatment. This method was chosen to lower processing temperatures and improve product yield. Preliminary experiments conducted to determine the viability of this synthesis method are presented. In addition, consolidation of sol–gel derived iodosodalite with a glass binder was explored using three different methods: (1) incorporating the glass binder during gel preparation using alkoxide precursors; (2) separately preparing the glass binder using a sol–gel method; and (3) separately preparing the glass binder using a melt-quench technique. Glass-bonded iodosodalite was successfully synthesized using these novel sol–gel-based approaches.

核燃料后处理过程中，放射性碘会积聚在水溶液和废气流中。此外，放射性碘在地质环境中具有很高的移动性。使用固体吸附剂和洗涤溶液可以在废气流中进行燃料后处理期间捕获大多数放射性碘。碘一旦被捕获，就必须以耐用的形式存储，以便最终处置。碘代锂盐已作为放射性碘的废物形式进行了研究，但是这些合成过程通常会导致混合产物和固结过程中碘挥发。本文提出了一种利用溶胶-凝胶法随后进行热处理来合成碘代钠长石的新方法。选择该方法是为了降低加工温度并提高产品产量。介绍了确定该合成方法可行性的初步实验。此外，还通过三种不同的方法探索了溶胶-凝胶衍生的碘代钠与玻璃粘合剂的固结：（1）在使用醇盐前体的凝胶制备过程中掺入玻璃粘合剂；（2）用溶胶-凝胶法分别制备玻璃粘合剂；（3）采用熔融淬火技术分别制备玻璃粘结剂。使用这些新颖的基于溶胶-凝胶的方法成功地合成了玻璃键合的碘代钠石。（3）采用熔融淬火技术分别制备玻璃粘结剂。使用这些新颖的基于溶胶-凝胶的方法成功地合成了玻璃键合的碘代钠石。（3）采用熔融淬火技术分别制备玻璃粘结剂。使用这些新颖的基于溶胶-凝胶的方法成功地合成了玻璃键合的碘代钠石。