...
首页> 外文期刊>Crystal growth & design >Crystallization of Keggin-type polyaluminum species by supramolecular interactions with disulfonate anions
【24h】

Crystallization of Keggin-type polyaluminum species by supramolecular interactions with disulfonate anions

机译:与二磺酸根阴离子的超分子相互作用使Keggin型多铝物质结晶

获取原文
获取原文并翻译 | 示例
           

摘要

The hydrolysis of aluminum and formation of polynuclear species, such as the Keggin-type polycations, impacts the chemical and physical properties of the resulting aluminum oxide and hydroxide materials. Despite years of study, only a handful of Keggin-type species have been identified, hampering efforts toward a molecular-level understanding of the mechanisms of condensation. To improve the crystallization of Keggin-type polyaluminum cations, a supramolecular approach using 2,6-napthalene disulfonate (2,6-NDS) was proposed herein for the isolation of novel compounds. The present study describes the successful synthesis and structural characterization of three Keggin-type polyaluminum compounds, including (Na(Al(μ _4-O _4)Al _(12)(μ-OH) _(24)(H _2O)) _(12)(2,6NDS) _4(H2O) _(13.5) (δ-Al _(13)), (Al _2(μ _4-O _8)(Al _(28)(μ _2- OH) _(56)(H _2O) _(26))(2,6NDS) _8Cl _2(H _2O) _(40) (Al _(30)), and a new polycation, (Al _2(μ _4-O _8)(Al _(24)(μ _2-OH) _(50)(H _2O) _(20))(2,6NDS) _6(H _2O) _(12.4) (Al _(26)). Additional chemical characterization of the compounds, particularly ~(27)Al-NMR, suggests that identifying the Al _(26) polycation in aqueous solutions may be difficult due to structural similarities to the δ-Al _(13) moiety. The structural characterization of novel Keggin-type aluminum polycations is important for a complete understanding of aluminum hydrolysis in aqueous solutions, and organosulfonates represent a viable approach for the crystallization of new polynuclear species.
机译:铝的水解和多核物质(例如Keggin型聚阳离子)的形成会影响所得氧化铝和氢氧化物材料的化学和物理性质。尽管进行了多年的研究,但仅发现了少数Keggin类型的物种,从而阻碍了对分子对缩合机理的理解的努力。为了改善Keggin型多铝阳离子的结晶,本文提出了使用2,6-萘二磺酸盐(2,6-NDS)的超分子方法来分离新型化合物。本研究描述了三种Keggin型多铝化合物的成功合成和结构表征,包括(Na(Al(μ_4-O _4)Al _(12)(μ-OH)_(24)(H _2O))_ (12)(2,6NDS)_4(H2O)_(13.5)(δ-Al_(13)),(Al _2(μ_4-O _8)(Al _(28)(μ_2- OH)_( 56)(H _2O)_(26))(2,6NDS)_8Cl _2(H _2O)_(40)(Al _(30))和新的聚阳离子(Al _2(μ_4-O _8)( Al _(24)(μ_2-OH)_(50)(H _2O)_(20))(2,6NDS)_6(H _2O)_(12.4)(Al _(26))。这些化合物,特别是〜(27)Al-NMR,表明由于与δ-Al_(13)部分的结构相似,很难鉴定水溶液中的Al _(26)聚阳离子。类型的铝聚阳离子对于全面了解水溶液中的铝水解非常重要,而有机磺酸盐则是新的多核物质结晶的可行方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号