PENTABORANE THERMAL STABILITY AT TEMPERATURES OF 100 DEGREES C, 125 DEGREES C AND 150 DEGREES C FOR 7 PERCENT ULLAGE
Abstract
The thermal stability of B5H9 was determined as the rate of pressure increase in 800-ml test cylinders filled to 7% ullage. Decomposition of the B5H9 resulted in pressure increases from 3 to 1200 psig (approximately 6% decomposition of B5H9) at temperatures of 100, 125 and 150 C after 360, 28 and 3 hr, respectively. At long hold times and high temperatures the predicted percent decomposition was higher than the observed percent decomposition. Investigations were made to determine the effects of H and B10H14 on pentaborane thermal stability after 138 hr, at a temperature of 110 C and an ullage of 52%. The addition of 26.8 mol-% H (approximately 1175 psig) for one test and 9.2 mol-% B10H14 for another test resulted in 6.5% and 8.1% decomposition. A blank B5H9 test resulted in a 10.3% decomposition. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 21, 1961
- Accession Number
- AD0269203
Entities
People
- L.e. Samuelson