Publication: Growth of β-LiNaSO4 and Li2SO4 . H20: epitaxy and intergrowth phenomena
Loading...
Full text at PDC
Publication Date
1995
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Science B.V.
Citations
Exportar
Abstract
Isothermal crystallization in the system Na2SO4-Li2SO4-H20 was carried out at 50°C by "salting out" in a tetrametoxysilane (TMS) gel medium. Under these conditions the solid phases that can crystallize are Na2SO4, Li2SO4 . H20 and β-LiNaSO4, depending on the initial composition of the gel interstitial solution. When the initial [Na2SO4]/[Li2SO4] molar ratio in the interstitial solution is smaller than 1, first β-LiNaSO4 crystallizes and, subsequently, Li2SO4 • H20. The nucleation of Li2SO4 • H20 is always heterogeneous and occurs epitaxially on the surface of β-LiNaSO4 crystals. Occasionally, successive heterogenous nucleation events promote the development of intergrowth phenomena. In this paper a detailed study of both epitactic growth and crystal morphology is worked out. Finally, the observed epitaxial relationships are interpreted on the ground of structural considerations.