Ln2(OH)5NO3•xH2O (Ln = Y, Gd-Lu):: A novel family of anion exchange intercalation hosts
Ln2(OH)5NO3•xH2O (Ln = Y, Gd-Lu):: A novel family of anion exchange intercalation hosts
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DOI：
10.1021/cm7019284
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发表时间：
2008-01-08
影响因子：
8.6
通讯作者：
Fogg, Andrew M.
中科院分区：
文献类型：
--
作者：
McIntyre, Laura J.;Jackson, Lauren K.;Fogg, Andrew M.
通过水热途径合成了一类在层内掺入较小镧系元素的可阴离子交换的层状氢氧化物。这些材料的组成为 Ln(2)(OH)(5)NO3 中心点 xH(2)O（Ln = Y，Gd-Lu；x 近似于 1.5），并且具有将镧系元素的特性与插层主体的灵活性相结合的潜力。粉末 XRD 数据表明，Gd 相的结晶度低于其他材料，并且与较大的镧系元素的反应导致其他相的形成，表明这些材料的阳离子半径有限。这些材料的阴离子交换能力已通过与一系列有机羧酸根和磺酸根阴离子的容易反应而显示出来，从而导致硝酸根阴离子的完全取代。
A class of anion exchangeable layered hydroxides incorporating the smaller lanthanides within the layers has been synthesized via a hydrothermal route. These materials have the composition Ln(2)(OH)(5)NO3 center dot xH(2)O (Ln = Y, Gd-Lu; x approximate to 1.5) and the potential to combine the properties of the lanthanides with the flexibility of intercalation hosts. Powder XRD data suggest that the crystallinity of the Gd phase is lower than that of the other materials, and reactions with the larger lanthanides lead to the formation of other phases, indicating a limiting cationic radius for these materials. The anion exchange capacity of these materials has been shown by facile reactions with a range of organic carboxylate and sulfonate anions, leading to the complete replacement of the nitrate anion.