Spontaneous formation of crystalline lithium molybdate from solid reagents at room temperature
- 13 August 2009
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Dalton Transactions
- Vol. 39 (2), 411-417
- https://doi.org/10.1039/b908266b
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; 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.Keywords
This publication has 36 references indexed in Scilit:
- A short history of SHELXActa Crystallographica Section A Foundations of Crystallography, 2007
- Reactivity of the Ruddlesden−Popper Phase H2La2Ti3O10 with Organic Compounds: Intercalation and Grafting ReactionsChemistry of Materials, 2007
- Synthesis of Nanocrystalline TiO2 and Reduced Titanium Oxides via Rapid and Exothermic Metathesis ReactionsChemistry of Materials, 2006
- A Non-Alkoxide Sol−Gel Method for the Preparation of Homogeneous Nanocrystalline Powders of La0.85Sr0.15MnO3Chemistry of Materials, 2006
- Phase Separation during the Topotactic Reduction of the Pyrochlore Y2Ti2O7Chemistry of Materials, 2005
- Combustion synthesis of alkaline-earth substituted lanthanum manganites; LaMnO3, La0.6Ca0.4MnO3 and La0.6Sr0.4MnO3Journal of Materials Chemistry, 2004
- Synthesis, structure and lithium-ion conductivity of Li2−2xMg2+x(MoO4)3and Li3M(MoO4)3(MIII= Cr, Fe)Journal of Materials Chemistry, 2003
- Probing the mobility of lithium in LISICON: Li+/H+exchange studies in Li2ZnGeO4and Li2+2xZn1−xGeO4Journal of Materials Chemistry, 2003
- The Hydride Anion in an Extended Transition Metal Oxide Array: LaSrCoO 3 H 0.7Science, 2002
- Partial Oxidation of Methane on Silica-Supported Different Alkali Metal MolybdatesJournal of Catalysis, 2001