Crystal and molecular structure of triethanol-ammonium nitrate. Technical report
Technical Report
·
OSTI ID:6761691
The liquid propellant used in the 155-mm regenerative liquid propellant gun is XM46 which is a solution of 60% hydroxyl ammonium nitrate (HAN), 20% triethanolammonium nitrate (TEAN), and 20% water. This material exhibits rather unusual liquid properties that have been attributed to its being a 'molten eutectic' of fused salts rather than a normal aqueous solution of two different nitrate salts. A hydrogen-bonded liquid structure for eutectic LP1946 was proposed previously based on the known structures of neat HAN and water and a best-guess estimate of the TEAN structure. To verify this estimate, the molecular structure of neat TEAN was recently determined. This investigation revealed TEAN has very unusual and interesting bifurcated intermolecular and trifurcated intramolecular hydrogen bonding configurations within the crystal. If these hydrogen bonding configurations are retained in aqueous solution, they could be responsible in some part to the observed unusual liquid properties of liquid propellant XM46. Crystal structure, X-ray diffraction, Molecular structure, TEAN, Triethanolammonium nitrate.
- Research Organization:
- Army Armament Research and Development Command, Dover, NJ (United States). Armament Engineering Directorate
- OSTI ID:
- 6761691
- Report Number(s):
- AD-A-258428/2/XAB; ARAED-TR--92026
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AMMONIUM COMPOUNDS
AMMONIUM NITRATES
CHEMICAL PROPERTIES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
EUTECTICS
FLUIDS
LIQUIDS
MOLECULAR STRUCTURE
MOLTEN SALTS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PROPELLANTS
SALTS
SCATTERING
X-RAY DIFFRACTION
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AMMONIUM COMPOUNDS
AMMONIUM NITRATES
CHEMICAL PROPERTIES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
EUTECTICS
FLUIDS
LIQUIDS
MOLECULAR STRUCTURE
MOLTEN SALTS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PROPELLANTS
SALTS
SCATTERING
X-RAY DIFFRACTION