Premium
A Calorimetric Study of the Liquid System Lead(II) Oxide‐Germanium Dioxide at 900°C
Author(s) -
Müller Franz,
Kleppa O. J.
Publication year - 1973
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19733970211
Subject(s) - germanate , germanium , germanium oxide , oxide , tetragonal crystal system , mixing (physics) , materials science , range (aeronautics) , enthalpy , chemistry , analytical chemistry (journal) , inorganic chemistry , thermodynamics , metallurgy , crystallography , crystal structure , chromatography , organic chemistry , physics , ion , quantum mechanics , silicon , composite material
The partial enthalpies of liquid lead(II) oxide and of tetragonal germanium dioxide in lead germanate melts were measured calorimetrically at 900°C in the range 0 to 65 mole‐% GeO 2 . The corresponding integral enthalpies of mixing were calculated. A relatively sharp dependence of the partial enthalpies on composition in the range from N GeO 2= 0.3 to 0.45 probably is due to the formation of Ge 2 O 6− 7 .