ACID-BASE PROPERTIES OF MELTS OF THE M2O-GeO2 SYSTEM (M = Li, Na, K)
S.A. Bessedina, V.G. Konakov and M.M. Schultz
Institute of Silicate Chemistry, Russian Academy of Sciences,
ul. Odoevskogo,24-2, St. Petersburg, 199155, Russia
This paper presents the most modern theories of acid-base interaction
in oxide melts. Also a historic review of the development of approaches to
describe the acid-base properties of melts is given. Generalized conception is
suggested which describes these properties adequately within a wide
concentration interval. Some quantitative procedures for estimation of
acid-base properties of the oxygen-containing melts are considered.
Akali-germanate melts are chosen as a model system. Experimental results on
the basicity of the M2O-GeO2 system are discussed and compared. The basicity of
these melts is also compared with that of other alkali containing melts such as
M2O-SiO2 and M2O-B2O3.
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