Preparation, characterization and thermal behavior of K2U4O13-Rb2U4O13 solid solutions
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Buddhadev Kanrar
Abstract
The preparation and characterization of (K1−xRbx)2U4O13 solid solutions has been studied for the x values in the range of 0 − 1. The solid solutions were prepared by heating K2U4O13 and Rb2U4O13 in required stoichiometry at about 600–700 ℃ for about 50 h in air atmosphere. The XRD patterns of the products suggest formation of the solid solutions in full composition range of Rb2U4O13 and K2U4O13. The cell volume of the crystal unit cell of solid solutions changes linearly with Rb atom % in (Rb + K) present in the solid solutions and follows Vegard's law. The solid solutions when heated in Ar/He atmospheres at 900 ℃ produce corresponding low valent uranate solid solutions (K1−xRbx)2U4O12 or their mixtures.
Acknowledgement
The authors are thankful to Dr. K.L. Ramakumar, Director, Radiochemistry and Isotope Group and Dr. S. Kannan, Head, Fuel Chemistry Division for their interest in this work.
©2015 Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Decomposition studies of group 6 hexacarbonyl complexes. Part 1: Production and decomposition of Mo(CO)6 and W(CO)6
- Electrochemical, computational and spectroscopic investigation on local environment of plutonium in ionic liquid and aqueous medium: a comparative study
- Comparison in the extraction properties of Pu(IV) in piperidinium and pyrrolidinium nitrate anchored anion exchange resins
- N,N-dialkyl-2-hydroxyacetamides for modifier-free separation of trivalent actinides from nitric acid medium
- The solubilities and solubility products of zirconium hydroxide and oxide after aging at 278, 313, and 333 K
- Studies on the separation of89Sr(II) from irradiated yttria target using 4, 4′(5′) di-tert-butyl-cyclohexano-18-crown-6 (DtBuCH18C6) by solvent extraction technique
- Preparation, characterization and thermal behavior of K2U4O13-Rb2U4O13 solid solutions
- Simultaneous multi-element determination in different seed samples of Dodonaea viscosa hopseed using instrumental neutron activation analysis
