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Study on adsorption characteristics of radioactive gaseous iodine on Ag ion exchange molecular sieve

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Abstract

The paper describes the structure and iodine adsorption performance of Ag+ ion-exchange 13X molecular sieve (Ag-13X) with a small Si/Al ratio. The Ag-13X has a high specific surface area (408 m2/g) and a large amount of micropore volume (0.18 cm3/g). The Ag-13X presents a strong affinity with I2 and CH3I. The I2 static adsorption capacity of the 26.7% Ag zeolite reached 700 mg/g. The adsorption capacities under 1‰ and 1% CH3I feeds are up to 104.4 mg/g and 131 mg/g, respectively. This study indicates the applicability of Ag-13X in severe nuclear accidents.

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Acknowledgements

This research was supported by the National Natural Science Foundation of China under Grant Agreement No. U1967215. This work was also supported by the “Reprocessing Scientific Research Special Program”, which is managed by the National Defense Bureau of Science and Industry under Grant Agreement No. KY20007.

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Authors and Affiliations

  1. Key Laboratory of Nuclear Air Purification Technology, China Institute for Radiation Protection, Taiyuan, 030006, Shanxi, China

    Jie Yu, Xin Chen, Hongzheng Ren, Xin Li, Xu Shi, Zexiang Chen, Shuwei Liang & Yongguo Li

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  1. Jie Yu
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Yu, J., Chen, X., Ren, H. et al. Study on adsorption characteristics of radioactive gaseous iodine on Ag ion exchange molecular sieve. J Radioanal Nucl Chem 332, 2269–2277 (2023). https://doi.org/10.1007/s10967-023-08826-3

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