Hydrothermal Synthesis and Structural Characterization of Four Scandium Phosphate Frameworks
| Autor: | Clare P. Grey, John B. Parise, Luming Peng, Ivor Bull, Victor G. Young, Simon J. Teat |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Materials science
General Chemical Engineering Inorganic chemistry chemistry.chemical_element Infrared spectroscopy Ethylenediamine General Medicine General Chemistry chemistry.chemical_compound Crystallography Octahedron chemistry Cyclam Materials Chemistry Hydrothermal synthesis Scandium Iron phosphate Isostructural |
| Zdroj: | Chemistry of Materials. 15:3818-3825 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | The recent expansion of zeolitic synthesis toward mixed geometry frameworks reflects their potential applications in shape-selective catalysis and absorption. Four scandium phosphates with three-dimensional frameworks have been hydrothermally synthesized. All structures were solved from single-crystal X-ray diffraction and were supported by 31P MAS NMR and infrared spectroscopy. Structure 1 ((C2N2H10)8Sc8(ScO2)4(PO4)4(HPO4)12·12H2O) consists of a novel framework with 14-membered rings (MRs) and 10-MR channels along the a and c axes, respectively. Ethylenediamine and water reside in the resulting supercage. Structure 2 ((C2N2H10)2Sc4(HPO4)8) consists of a framework built from the corner-sharing of ScO6 octahedra with HPO4 tetrahedra whose connection results in a 8-MR channel down the a axis, where hydrolyzed cyclam resides. This compound is isostructural to a number of existing synthetic materials including a scandium phosphate, an indium phosphate, and an iron phosphate. Structure 3 (Sc4(HPO4)8·4(H3O)) is... |
| Databáze: | OpenAIRE |
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