Thermal Dehydration of Lithium Sulfate Monohydrate. The Reaction Reversibility and the Solid Product Morphology
, E-ISSN: 1872-762X
||Dehydration, Lithium sulphate, Reversibility
Institute of Solid State Chemistry, Siberian Branch of Russian Academy of Sciences, Derzhavina 18, Novosibirsk 630091, Russia
Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademica Lavrentieva 5, Novosibirsk 630090, Russia
Local reversibility caused by a reactant (lithium sulfate monohydrate) crystalline skeleton kept after removal of water molecules (“vacancy structure”) was studied via dehydration/rehydration cycles repeated under the same conditions. The dehydration reversibility observed indicates the stability of the “vacancy structure”. Solid product morphology was studied using electron microscopy. The initial crystal of Li2SO4 · H2O decomposed in the course of dehydration, and thus the reaction zone, consisted of isolated microcrystalline “blocks”.