Synthesis of nanopowders and physicochemical properties of ceramic matrices of the LaPO4–YPO4–(H2O) and LaPO4–HoPO4–(H2O) systems

Synthesis of nanopowders and physicochemical properties of ceramic matrices of the... Sol-gel method was used to synthesize nanosize powders in the LaPO4–YPO4–(H2O) and LaPO4–HoPO4–(H2O) systems. Dense ceramic samples with high microhardness (up to 25 GPa) were formed from these powders by sintering at temperatures of up to 1600°C. The isomorphic capacity of the monoclinic LaPO4 matrix for the second component (yttrium or holmium) simulating radioactive nuclides of the actinide-rare-earth fraction was found to be high. The composites are stable in aqueous solutions, which is indicated by the low concentration of lanthanum and yttrium ions during leaching test (~10–7 g L–1). The results obtained in the study can be used to develop new high-efficiency ceramic matrices for solidification of the actinide-rare-earth fraction of liquid wastes formed in processing of the spent nuclear fuel. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Synthesis of nanopowders and physicochemical properties of ceramic matrices of the LaPO4–YPO4–(H2O) and LaPO4–HoPO4–(H2O) systems

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Publisher
Pleiades Publishing
Copyright
Copyright © 2017 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427217010050
Publisher site
See Article on Publisher Site

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