Synthesis and Characterization of Zincosilicates with the SOD Topology
Synthesis and Characterization of Zincosilicates with the SOD Topology
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具有 SOD 拓扑结构的硅酸锌的合成和表征
DOI：
10.1021/cm00047a046
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发表时间：
1994
影响因子：
8.6
通讯作者：
Mark E. Davis
中科院分区：
文献类型：
--
作者：
M. A. Camblor;R. Lobo;H. Koller;Mark E. Davis
Zn^（2+）可以通过直接合成法引入到方钠石拓扑结构（SOD）沸石的四面体骨架位置。通过热分析、粉末X射线衍射（XRD）数据的Rietveld精修和红外光谱表征锌硅酸盐。
(IR)和^1H、^（23）Na、^（13）C和^（29）Si MAS NMR谱。锌替代水平高，
当Si/Zn = 6-7时，得到了最大程度的同晶取代，并且构成了沸石骨架中双电荷杂原子的最大程度的同晶取代。观察到两种类型的β笼占位剂（TMA^+和Na^+）。
The incorporation of Zn^(2+) into tetrahedral framework positions of zeolites with the sodalite topology (SOD) is obtained by direct synthesis. The zincosilicates are characterized by thermal analyses, a Rietveld refinement of powder X-ray diffraction (XRD) data, and infrared
(IR) and ^1H, ^(23)Na, ^(13)C, and ^(29)Si MAS NMR spectroscopies. A zinc substitution level as high
as Si/Zn = 6-7 is achieved and constitutes by far the largest extent of isomorphous substitution by a doubly charged heteroatom in the framework of a zeolite. Two types of β-cage occupancies (TMA^+ and Na^+) are observed.