Thermodynamic Evaluation of the Possibility of Lithium Superoxide Production

Item

Title
Thermodynamic Evaluation of the Possibility of Lithium Superoxide Production
Date
1965
Index Abstract
Not Available
Photo Quality
Not Needed
Report Number
AMRL TR 65-126
Creator
Snow, Richard H.
Corporate Author
IIT Research Institute
Laboratory
Aerospace Medical Research Laboratories
Extent
37
Identifier
AD0626596
Access Rights
CFSTI
Distribution Classification
1
Contract
AF 33(615)-2351
DoD Project
6373
DoD Task
637302
DTIC Record Exists
No
Distribution Change Authority Correspondence
None
Distribution Conflict
No
Abstract
To determine whether lithium superoxide can be produced and whether it is stable enough for use in air regeneration units of manned spacecraft, the free energy of lithium superoxide was calculated from estimated values of the heat of formation, entropy, and heat capacity. The estimates were based on graphical comparison with properties of other oxides. The heat of formation was also determined from calculation of the lattice energy by means of the Born-Haber cycle. The result was -65 kcal. The stability of lithium superoxide was deduced by comparing graphically the free energies of the oxides of lithium. The superoxide is unstable by 15 kcal from 100 to 300K and is even more unstable at higher temperatures. Reasonably high pressure and other effects cannot overcome this instability, even at low temperature. Therefore the use of lithium superoxide for air regeneration units is not promising.
Report Availability
Full text available
Date Issued
1965-08
Provenance
RAF Centre of Aviation Medicine
Type
report
Format
1 online resource
Item sets
Illinois Tech Related
Media
AMRLTR65-126.pdf