Issue 6, 1995
From the journal:

Journal of Materials Chemistry

Acid leaching of LiMW2O8(M [double bond, length as m-dash] Al, Fe) in aqueous HNO3: formation of WO3·H2O and WO3·1/3H2O

Nattamai S. P. Bhuvanesh,   Seetharaman Uma,   Gonar N. Subbanna  and  Jagannatha Gopalakrishnan  

Abstract

WO3·H2O and WO3·1/3H2O are obtained by acid leaching of LiMW2O8(M [double bond, length as m-dash] Al, Fe). The monohydrate is obtained by leaching in 6 mol I–1 HNO3, and the one-third hydrate by leaching in concentrated HNO3. On dehydration, the monohydrate transforms to the monoclinic ReO3-like WO3, whereas the one-third hydrate transforms to hexagonal WO3. The present work, together with our previous work on the leaching of LiVWO6(Chem. Mater., 1994, 6, 373), shows that acid leaching is not likely to be a topochemical reaction, since the structure of the solid products obtained is not determined by the structure of the starting material.

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Article information

DOI
https://doi.org/10.1039/JM9950500927
Article type
Paper

J. Mater. Chem., 1995,5, 927-930

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Acid leaching of LiMW2O8(M [double bond, length as m-dash] Al, Fe) in aqueous HNO3: formation of WO3·H2O and WO3·1/3H2O

N. S. P. Bhuvanesh, S. Uma, G. N. Subbanna and J. Gopalakrishnan, J. Mater. Chem., 1995, 5, 927 DOI: 10.1039/JM9950500927

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