Abstract
The factors determining the solubility in MMoO4(scheelite)-LnVO4(zircon) systems, where M = Ca, Cd, Sr, Ba, Pb, Ln = Y, Sc, La-Lu, are analyzed. It is shown that primary solid solutions based on REE vanadates are absent due to a high (above 36 kJ/mol) enthalpy of polymorphic scheelite → zircon transition. For solid solutions based on bivalent metal molybdates, the zircon → scheelite transition has a lower enthalpy of 16–22.3 kJ/mol. The differences in bond ionicity in MoO 4 2− and VO 4 3− anions and interatomic distances in MO8 and LnO8 polyhedra restrict mutual solubility of the initial compounds, but are not the cause of its asymmetry.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
