The radiolysis of poly(4-vinylpyridine) quaternary salt ion exchange resins
The radiolysis of poly(4-vinylpyridine) quaternary salt ion exchange resins
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DOI：
10.1016/j.jnucmat.2007.05.032
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发表时间：
2008-02
影响因子：
3.1
通讯作者：
Kazuyuki Enomoto;J. LaVerne;L. Tandon;A. E. Enriquez;J. Matonic
中科院分区：
文献类型：
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作者：
Kazuyuki Enomoto;J. LaVerne;L. Tandon;A. E. Enriquez;J. Matonic
测定了不同聚(4-乙烯基吡啶)季盐型离子交换树脂的辐射产物，特别是分子氢(H2)的辐射化学产额，这些树脂的吸水率高达30wt%。用5 MeV_4He离子模拟α粒子的辐照，并与γ-射线进行比较。这些树脂是氯化物和硝酸盐的季盐，通常用作阴离子交换和钚回收过程中的基质。在所有树脂中，都观察到两种类型的电离辐射的H_2产率随着水负荷的增加而增加。当吡啶氮原子与甲基配位而不是与氢原子配位时，硝酸形式的H_2的产率低于氯化形式H_2的产率。光谱研究包括UV/Vis、IR和拉曼光谱，表明所有的树脂都表现出很高的辐射稳定性。
The radiation chemical yields of gaseous products, especially molecular hydrogen (H2), have been determined in the radiolysis of different poly(4-vinylpyridine) quaternary salt ion exchange resins with up to about 30wt% of absorbed water. Irradiations were performed with 5MeV4He ions to simulate α-particle radiolysis and with γ-rays for comparison. The resins were quaternary salts of chloride and nitrate that are commonly used as matrixes in anion exchange and in plutonium recovery processes. An increase in H2yields with increasing water loading was observed for both types of ionizing radiation in all of the resins. The yield of H2for the nitrate-form was lower than that for the chloride and the yield of H2was lower when the pyridinium nitrogen atom is coordinated to a methyl group rather than to atomic hydrogen. Spectroscopic studies included UV/vis, IR, and Raman and suggested that all the resins exhibit a high radiolytic stability.