THE SODIUM HYDROXIDE-SODIUM OXIDE-SODIUM-SODIUM HYDRIDE-HYDROGEN SYSTEM

Technical Report · Fri Mar 01 04:00:00 EST 1957

DOI:https://doi.org/10.2172/4346292· OSTI ID:4346292

Kelly, H C; Sullivan, E A; Johnson, S

Sodium hydride dissolves in and reacts with molten NaOH to give an equilibrium mixture of NaH, NaOH, Na/sub 2/O, Na, and H. In the case where there is a gaseous phase (hydrogen) and only one condensed phase, the system is defined by the temperature, pressure, and one composition variable. The equilibriu, H/ sub 2/ pressure, which is a measure of the H/sub 2/ activity within the melt, was determined as a function of the composition of the condensed phase(s) at 600, 700, and 500 deg for equilibrium mixtures with original compositions of 2.5 to 97.5, 5.0 to 95.0, l0.0 to 90.0, and 20.0 to 50.0 mole% NaH-NaOH. The equilibrium H/sub 2/ pressure-composition isotherms obtained by removing measured increments of H/sub 2/ were reproduced by reabsorbing H/sub 2/. Results for the 5.0 mole % NaH mixture were duplicated by starting with an equivalent quantity of either Na in NaOH or Na/sub 2/O in NaOH, and reacting with measured increments of H/sub 2/. The system is discussed in relation to the interdependent reactions involved, the phase rule, the thermodynamics of certain reactions, and experimental techniques employed. (auth)

• Research Organization: Metal Hydrides Inc. Chemical Research Lab., Beverly, Mass.
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-12-002214
• OSTI ID: 4346292
• Report Number(s): CF-57-3-35
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
CAPACITORS
CHEMISTRY
COILS
CORROSION
ELECTRIC CONDUCTIVITY
ELECTROLYTIC CELLS
FILMS
FREQUENCY
GASES
HYDROGEN
IMPEDANCE
INDUCTION
MEASURED VALUES
OXIDES
PHASE DIAGRAMS
PRESSURE
QUANTITY RATIO
RESISTORS
SODIUM
SODIUM HYDROXIDES
SODIUM OXIDES
SOLUBILITY
STEAM
TEMPERATURE
THERMODYNAMICS
WATER
ZIRCONIUM
ZIRCONIUM ALLOYS