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Issue 2, 2010
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Spontaneous formation of crystalline lithium molybdate from solid reagents at room temperature

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Abstract

Lithium molybdate has been prepared by grinding LiOH·H2O with MoO3 in air at room temperature. X-Ray powder diffraction data show that the formation of highly crystalline Li2MoO4 is largely complete after 10 min. The phenacite structure of this material is the same as that derived from an X-ray diffraction study of a single crystal obtained from aqueous solution [R[3 with combining macron]; a = 14.3178(14) Å, c = 9.5757(9) Å]. Anhydrous lithium hydroxide fails to give the same reaction indicating that the water of crystallisation of LiOH·H2O is a vital component in this rapid synthesis. Differential scanning calorimetry measurements show that this reaction can proceed spontaneously between the two stable solid reagents at sub-ambient temperatures and is driven by the liberation of water from the crystalline lattice. Lithium molybdate prepared in this manner has significantly smaller and more regularly shaped particles than samples prepared by other synthetic methods.

Graphical abstract: Spontaneous formation of crystalline lithium molybdate from solid reagents at room temperature

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Publication details

The article was received on 27 Apr 2009, accepted on 14 Jul 2009 and first published on 13 Aug 2009


Article type: Paper
DOI: 10.1039/B908266B
Citation: Dalton Trans., 2010,39, 411-417
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    Spontaneous formation of crystalline lithium molybdate from solid reagents at room temperature

    T. W. S. Yip, E. J. Cussen and C. Wilson, Dalton Trans., 2010, 39, 411
    DOI: 10.1039/B908266B

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