Hydrothermal synthesis and thermal properties of a novel cubic ZrW{sub 1.80}V{sub 0.20}O{sub 7.90} solid solution

Journal Article · Sun May 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.03.021· OSTI ID:21494284

Chen, Xi ^[1]; Deng, Xuebin; Ma, Hui ^[1]; Tao, Juzhou ^[2]; Zhao, Xinhua ^[1]

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1. College of Chemistry and Analysis and Test Center, Beijing Normal University, Beijing 100875 (China)
2. Experimental Physics Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

Tetragonal ZrW{sub 1.80}V{sub 0.20}O{sub 6.90}(OH){sub 2.00}(H{sub 2}O){sub 2.00} hydrate was prepared using an acidic steam hydrothermal (ASH) method. Thermal dehydration followed by phase transformation of this precursor leads to successful synthesis of a novel W-site low-valent substituted cubic ZrW{sub 1.80}V{sub 0.20}O{sub 7.90} solid solution, the mechanism of this process is studied in detail revealing the hydrate and a metastable orthorhombic phase of V'{sub W}substitution solid solution as important intermediate product. This material is found to possess thermal contraction and order-disorder phase transformation properties similar to that of the cubic ZrW{sub 2}O{sub 8}. -- Graphical Abstract: A novel cubic ZrW{sub 1.80}V{sub 0.20}O{sub 7.90} solid solution (a) was synthesized through its metastable orthorhombic phase (b) as the dehydration product of hydrate precursor ZrW{sub 1.80}V{sub 0.20}O{sub 6.90}(OH){sub 2.00}(H{sub 2}O){sub 2.00} (c). Display Omitted Highlights: {yields} The details of ZrW{sub 1.80}V{sub 0.20}O{sub 6.90}(OH){sub 2.00}(H{sub 2}O){sub 2.00} dehydration process is revealed. {yields} V{sup 5+} remaining a substitution state is crucial to the formation of c-ZrW{sub 1.80}V{sub 0.20}O{sub 7.90}. {yields} Synthesis of a novel aliovalent W-site substituted cubic ZrW{sub 1.80}V{sub 0.20}O{sub 7.90} was achieved. {yields} Phase transition temperature and thermal contraction were determined for c-ZrW{sub 1.80}V{sub 0.20}O{sub 7.90}.

• OSTI ID: 21494284
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 5; Other Information: DOI: 10.1016/j.jssc.2011.03.021; PII: S0022-4596(11)00118-6; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ASHES
DEHYDRATION
HYDRATES
HYDROTHERMAL SYNTHESIS
ORTHORHOMBIC LATTICES
PHASE TRANSFORMATIONS
PRECURSOR
SOLID SOLUTIONS
THERMAL EXPANSION
TRANSITION TEMPERATURE
VANADATES
VANADIUM IONS
ZIRCONIUM TUNGSTATES
CHARGED PARTICLES
COMBUSTION PRODUCTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DISPERSIONS
EXPANSION
HOMOGENEOUS MIXTURES
IONS
MIXTURES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
RESIDUES
SOLUTIONS
SYNTHESIS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS
VANADIUM COMPOUNDS
ZIRCONIUM COMPOUNDS