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K-paracelsian (KAlSi3O8·H2O) and identification of a simple building scheme of dense double-crankshaft zeolite topologies

机译：K-抛物线形（KAlSi3O8·H2O）和致密双曲轴沸石拓扑结构的简单构造方案的确定

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During screening of the phase space using KOH and 1-methyl-4-aza-1-azoniabicyclo­[2.2.2]octane hydroxide (1-methyl-DABCO) under hydrothermal zeolite synthesis conditions, K-paracelsian was synthesized. Scanning electron microscopy, energy dispersive X-ray spectroscopy and ex situ powder X-ray diffraction analysis revealed a material that is compositionally closely related to the mineral microcline and structurally closely related to the mineral paracelsian, both of which are feldspars. In contrast to the feldspars, K-paracelsian contains intrazeolitic water corresponding to one molecule per cage. In the case of K-paracelsian it might be useful to consider it a link between feldspars and zeolites. It was also shown that K-paracelsian can be described as the simplest endmember of a family of dense double-crankshaft zeolite topologies. By applying the identified building principle, a number of known zeolite topologies can be constructed. Furthermore, it facilitates the construction of a range of hypothetical small-pore structures that are crystallo-chemically healthy, but which have not yet been realized experimentally.
机译：在水热沸石合成条件下，使用KOH和1-甲基-4-氮杂-1-氮杂双环[2.2.2]辛烷氢氧化​​物（1-甲基-DABCO）筛选相空间时，合成了K-celcelsian。扫描电子显微镜，能量色散X射线能谱和异位粉末X射线衍射分析揭示了一种成分与矿物微系密切相关且在结构上与矿物直系矿物密切相关的材料，两者均为长石。与长石相反，K-paracelsian的沸石内水相当于每个笼子一个分子。对于K-降落伞，可能认为它是长石与沸石之间的联系。还表明，K-抛物线形体可以说是稠密的双曲轴沸石拓扑结构家族中最简单的端成员。通过应用确定的构造原理，可以构造许多已知的沸石拓扑。此外，它有助于构建一系列假设的小孔结构，这些结构在晶体化学上是健康的，但尚未通过实验实现。

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