Synthesis, Structural Study and Thermal Expansion of Cesium Dititanium Tris(Phosphate)

Authors

  • E. A. Asabina Department of Chemistry, Lobachevsky State University of Nizhniy Novgorod, Pr. Gagarina 23, Nizhniy Novgorod 603950, Russia
  • V. I. Petkov Department of Chemistry, Lobachevsky State University of Nizhniy Novgorod, Pr. Gagarina 23, Nizhniy Novgorod 603950, Russia

DOI:

https://doi.org/10.18321/ectj43

Abstract

The new phosphate CsTi2(PO4)3 was synthesized by precipitating method and characterized by scanning electron microscopy with energy-dispersive X-ray microanalyzer, X-ray powder diffraction and IR-spectroscopy. The structure refinement of the phosphate was carried out by a Rietveld analysis. CsTi2(PO4)3 crystallizes with the cubic system (space group Ia 3d), its unit-cell parameters: a = 19.909(5) Å, V = 7892(1) Å3. It has the framework structure formed by TiO6 octahedra and PO4 tetrahedra, the two type positions of Cs+ cations are in the cavities of the structure. CsTi2(PO4)3 structure features are discussed. The results of the undertaken study showed that cesium dititanium tris(phosphate) crystal structure differs from its isoformulic analogues CsZr2(PO4)3 and AM2(PO4)3 (A = Na, K, Rb; M = Ti, Zr), crystallizing in the trigonal system (space group R3c) with the kosnarite type. Thermal expansion of the CsTi2(PO4)3 was studied: aa = 7.85 . 10-6oC-1, aV = 23.5 .10-6oC-1 in the range 25–800 oC.

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Published

2010-11-15

How to Cite

Asabina, E. A., & Petkov, V. I. (2010). Synthesis, Structural Study and Thermal Expansion of Cesium Dititanium Tris(Phosphate). Eurasian Chemico-Technological Journal, 12(3-4), 189–194. https://doi.org/10.18321/ectj43

Issue

Vol. 12 No. 3-4 (2010)

Section

Articles

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