Synthesis and structural characterisation using Rietveld and pair distribution function analysis of layered mixed titanium-zirconium phosphates

被引：9
|
作者：
Burnell, Victoria A. [1 ]
Readman, Jennifer E. [1 ]
Tang, Chiu C. [2 ]
Parker, Julia E. [2 ]
Thompson, Stephen P. [2 ]
Hriljac, Joseph A. [1 ]
机构：
[1] Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England
[2] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2010年 / 183卷 / 09期
基金：
英国工程与自然科学研究理事会;
关键词：
Layered phosphates; Titanium; Zirconium; Pair distribution function analysis; Solid solution; ION-EXCHANGE PROPERTIES; CRYSTALLINE TITANIUM; POWDER DIFFRACTION; THERMAL-BEHAVIOR; MECHANISM; SALTS; METALS;
D O I：
10.1016/j.jssc.2010.07.028
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Crystalline metal (IV) phosphates with variable zirconium-to-titanium molar ratios of general formula (Ti1-xZrx)(HPO4)(2)center dot H2O have been prepared by precipitation of soluble salts of the metals with phosphoric acid and heating the amorphous solids in 12 M H3PO4 in an autoclave. The new materials are structurally characterised by Rietveld analysis of synchrotron X-ray powder diffraction data and pair distribution function (PDF) analysis of high energy synchrotron X-ray total scattering data. A broad range of zirconium-titanium phosphate solid solutions were formed showing isomorphous substitution of titanium by zirconium in the alpha-titanium phosphate lattice and vice versa for titanium substitution into the a-zirconium phosphate lattice. In both cases the solubility is partial with the coexistence of two substituted phases observed in samples with nominal compositions between the solubility limits. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：2196 / 2204
页数：9
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