Kinetics and Thermodynamics of Mg-Al Disorder in MgAl2O4-Spinel: A Review.

ABSTRACT: The MgAl2O4-spinel has wide applications in various industries and in geosciences. It shows a significant inter-site Mg-Al cation exchange (denoted by the inversion parameter x), which modifies structural features, such as the unit-cell parameters and the sizes of the component polyhedra, and influences the physical and chemical properties. Previous studies mainly focused on the kinetics and thermodynamics of the Mg-Al exchange reaction, with the aim to ascertain the correlation between the inversion parameter and temperature; these studies, however, reached conflicting results. Here, we first reviewed the kinetics studies on the Mg-Al cation exchange reaction, and then reviewed all thermodynamic experiments, with special attention paid to the Mg-Al cation exchange equilibrium and the quen

SUBMITTER: Ma Y 

PROVIDER: S-EPMC6540108 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature