Calculation of activities in the system KO/sub 0/ /sub 5/--AlO/sub 1/ /sub 5/--SiO/sub 2/

Journal Article · Wed Dec 13 23:00:00 EST 1978 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100514a011· OSTI ID:6214873

Eliezer, I; Eliezer, N; Howald, R A; Verwolf, M C

The vapor pressure of potassium has been measured as a function of temperature in the AlO/sub 1/ /sub 5//sup -/ and SiO/sub 2//sup -/ rich regions of the KO/sub 0/ /sub 5/--AlO/sub 1/ /sub 5/--SiO/sub 2/ system. Combining this data with the known solubility relations in the system and mathematical analyses of activities in the binary subsystems leads to calculated activities for all three species as a function of temperature and composition for liquids in the system KO/sub 0/ /sub 5/--AlO/sub 1/ /sub 5/--SiO/sub 2/. These calculations provide refinements in the phase diagram and in the thermodynamic properties of K/sub 2/Si/sub 4/O/sub 9/, KAlO/sub 2/, sanidine, leucite, and KAlSiO/sub 4/.

• Research Organization: Montana State Univ., Bozeman
• OSTI ID: 6214873
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 82:25; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALI METALS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
ELEMENTS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
SILICON COMPOUNDS
SILICON OXIDES
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE