Comparisons of Plutonium, Thorium, and Cerium Tellurite Sulfates

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• 作者：Jian Lin ; Justin N. Cross ; Juan Diwu ; Nathan A. Meredith ; Thomas E. Albrecht-Schmitt
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：April 15, 2013
• 年：2013
• 卷：52
• 期：8
• 页码：4277-4281
• 全文大小：336K
• 年卷期：v.52,no.8(April 15, 2013)
• ISSN：1520-510X

文摘

The hydrothermal reaction of PuCl₃ or CeCl₃ with TeO₂ in the presence of sulfuric acid under the comparable conditions results in the crystallization of Pu(TeO₃)(SO₄) or Ce₂(Te₂O₅)(SO₄)₂, respectively. Pu(TeO₃)(SO₄) and its isotypic compound Th(TeO₃)(SO₄) are characterized by a neutral layer structure with no interlamellar charge-balancing ions. However, Ce₂(Te₂O₅)(SO₄)₂ possesses a completely different dense three-dimensional framework. Bond valence calculation and UV鈥搗is鈥揘IR spectra indicate that the Ce compound is trivalent whereas the Pu and Th compounds are tetravalent leading to the formation of significantly different compounds. Pu(TeO₃)(SO₄), Th(TeO₃)(SO₄), and Ce₂(Te₂O₅)(SO₄)₂ represent the first plutonium/thorium/cerium tellurite sulfate compounds. Our study strongly suggests that the chemistries of Pu and Ce are not the same, and this is another example of the failure of Ce as a surrogate.