Heat capacity of potassium borohydride (KBH4) from 15 to 375 °K. Thermodynamic properties from 0 to 700 °K
- 1 November 1964
- journal article
- Published by National Institute of Standards and Technology (NIST) in Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
- Vol. 68A (6) , 651-659
- https://doi.org/10.6028/jres.068a.065
Abstract
The heat capacity of potassium borohydride (KBH4) was determined from about 15 to 375 °K by means of an adiabatic calorimeter. A table of thermodynamic functions was calculated up to 700 °K using the data obtained along with those at high temperatures found in the literature. A solid-solid (order-disorder) transition was observed at 77.16 ±0.02 °K and the entropy change associated with this transition was found to be 2.92 J/deg-mole. A broad transition from about 200 to 450 °K is attributed to a continuation of the order-disorder transition.Keywords
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