New data on the crystal structures of natural zirconosilicates: structure refinements and ion-exchange behavior
New data on the crystal structures of natural zirconosilicates: structure refinements and ion-exchange behavior
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天然硅酸锆晶体结构的新数据：结构细化和离子交换行为
DOI：
10.1524/zkri.2008.0007
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
D. Pushcharovsky
中科院分区：
文献类型：
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作者：
N. Zubkova;D. Pushcharovsky
本文综述了对一大类天然锆硅酸盐的矿物学、结构和晶体化学研究。这些锆硅酸盐属于大量不同的结构类型，和那些与孤立的Zr-中心八面体和硅酸盐复合物的混合框架被描述根据SiO_4四面体的缩合程度。这些相的微孔异多面体性质被认为与它们的离子交换性能。配备CCD探测器的X射线衍射仪的应用，Rietveld方法的使用，以及电子显微镜和红外光谱数据提供了对这些矿物的结构特性的新见解。研究结果为寻找在催化、分子分离、离子交换等领域具有潜在应用价值的锆硅化合物提供了理论依据。
A review of the mineralogical, structural and crystal-chemical studies carried out on a large group of natural zirconosilicates is reported. These zirconosilicates belong to a large number of distinct structural types, and those with mixed frameworks of isolated Zr-centred octahedra and silicate complexes are described according to the degree of condensation of SiO4 tetrahedra.The microporous heteropolyhedral nature of these phases is considered in connection with their ion exchange properties. The application of X-ray diffractometers equipped with CCD detectors, use of the Rietveld method, and electron microprobe and IR spectroscopic data provide new insights into the structural peculiarities of these minerals. The results stimulate the search for new Zr—Si-compounds with potential applications in the areas of catalysis, separation of molecules, ion exchange, etc.