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Synthesis of Vanadium Oxide Powders by Evaporative Decomposition of Solutions
Author(s) -
Lawton Stanley A.,
Theby Edward A.
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08367.x
Subject(s) - decomposition , thermal decomposition , aqueous solution , vanadium , hydrate , oxide , inorganic chemistry , vanadium oxide , sulfur , materials science , sulfate , chemistry , chemical engineering , metallurgy , organic chemistry , engineering
Powders of the vanadium oxides V 2 O 4 , V 6 O 13 , and V 2 O 5 were produced by thermal decomposition of aqueous solutions of vanadyl sulfate hydrate in atmospheres of N 2 , H 2 mixed with N 2 , or air. The composition of the oxide powder was determined by the reactor temperature and gas composition. Residual sulfur concentrations in powders produced by decomposition at 740°C were less than 1 at.%, and these powders consisted of hollow, roughly spherical aggregates of particles less than 1 μm in diameter.