Effect of Structure and Composition of Non-Stoichiometry Magnesium Aluminate Spinel on Water Adsorption.

MgAlO is used in humidity sensing and measurement, and as a catalyst or catalyst support in a wide variety of applications. For such applications, a detailed understanding of the surface properties and defect structure of the spinel, and, in particular, of the gas interactions at the spinel surface is essential. However, to the best of our knowledge, very limited experimental data regarding this subject is currently available.