HIGH-PRESSURE RESEARCH TOWARD HIGH-ENERGY PROPELLANTS.
Abstract
An experimental program was carried out with the major objective of synthesizing the hypothetical interhalogen compounds BrF7 and ClF7 by high pressure methods. High-pressure high-temperature experiments were carried out on Br2-F2, BrF5-F2, and CsF-BrF5-F2 mixtures at pressures to 50,000 psi and temperatures to 530 C in a gas-pressure apparatus in an attempt to synthesize BrF7. Experiments carried out on Br2-F2 and BrF5-F2 mixtures at pressures greater than 30,000 psi at concomitant temperatures above 400 C show some evidence for the existence of BrF7 in the recovered products. The evidence for BrF7 in the recovered products was based upon the observance of two weak discrete m/e peaks of 193 and 195 which are characteristic and correlative with BrF6(+) peaks in the mass spectrometric data. However, the observed peaks attributed to BrF6(+) were too small to state unequivocally that BrF7 was synthesized. Experiments carried out on Br2-F2, BrF5-F2 and CsF-BrF5-F2 mixtures at either high pressures and low temperatures (<400 C) or at low pressures and high temperatures did not yield any detectable BrF7. Gamma-irradiation experiments on Br2-F2, BrF5-F2, and CsF-BrF5-F2 mixtures at pressures to 2600 psi and at dose rates ranging from 7 x 10 to the 4th power to 4 x 10 to the 5th power r/hr also gave inconclusive results. Electrical-spark-discharge experiments on BrF5-F2 mixtures at pressures to 450 psi and discharge energies of the order of 30 w/sec at room temperature did not yield any detectable BrF7 in the recovered products as analyzed by mass-spectrometric and infrared analyses. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1967
- Accession Number
- AD0385371
Entities
People
- C. B. Sclar
- D. E. Trent
- L. C. Carrison
Organizations
- Battelle Memorial Institute