HIGH PRESSURE CHEMISTRY OF HYDROGENOUS FUELS.
Abstract
A research program was carried out to investigate the low temperature-high pressure chemistry of ammonia, hydrogen, and ammonium amalgam. The thermodynamic data obtained and the calculations performed are of importance for the synthesis of metallic ammonium hydride and metallic ammonium, which represent attractive high energy solid fuels for use in solid rocket propulsion systems. A thermodynamic analysis was performed in which (1) H2 xNH3, a hydrogen clathrate with ammonia as a guest, (2) NH4, metallic ammonium, and (3) NH4H, ammonium hydride, were considered as plausible products from reactions of ammonia with hydrogen. Enthalpies and free energies of formation for NH4 and NH4H were estimated by several methods. To obtain information regarding the physical and chemical nature of ammonium amalgam, a Bridgman opposed anvil high pressure apparatus was designed, constructed, and used to pressurize ammonium amalgam samples to 50 kilobars at low temperatures. To establish the pressure scale and to test the silver chloride sample assembly, the resistance of several bismuth samples was determined as a function of pressure to 45 kilobars.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1966
- Accession Number
- AD0373800
Entities
People
- A. P. Caron
- K. F. Sterrett