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Solid reactant hydrogen gas generator formulations which yield greater than 15 weight percent hydrogen of greater than 98 mole percent hydrogen of greater than 98 mole percent hydrogen purity are formulated of a primary heat and hydrogen source selected from ammonia borane from about 50 to about 70 weight percent and hydrazine bisborane from about 0-30.00 weight percent, a first hydrogen-containing compound that functions as an auxiliary heat and hydrogen source consisting of ammonium nitrate from about 10.20 to about 17.82 weight percent, and a second hydrogen-containing compound that functions as an auxiliary heat and hydrogen source consisting of (NH4)2B10H10 from about 9.80 to about 17.18 weight percent. (Author)

The all amine borane gas generating system of this invention is in the form of a compacted solid propellant pellet which liberates a high purity hydrogen or deuterium when decomposed. The basic solid propellant pellet consists of hydrazine bis-borane which serves as the thermal stimulus for the decomposition of itself. Hydrazine bis-borane also serves as the thermal stimulus for the decomposition of diborane diammoniate with which it is combined to produce higher yields of hydrogen with higher purity. Deuterated analogs of the specified compounds serve as the reactant compounds for deuterium generation. The hydrazine bis-borane produces sufficient heat to decompose itself as well as the diborane diammoniate after decomposition is initiated by a heat source such as an electrically heated nichrome wire (80% Ni and 20% Cr) placed in contact with the composition.

Fluorotrinitromethane is synthesized by reacting tetranitromethane with an adduct of an alkali metal fluoride and a fluorinated or chlorofluorinated acetone in an aprotic dipolar solvent. (Author), Supersedes PAT-APPL-513 630-74.

In the synthesis of fluorotrinitromethane by reacting tetranitromethane with an adduct of an alkali metal fluoride and a fluorinated or chlorofluorinated acetone in an aprotic dipolar solvent, chlorine or bromine is added during the reaction so as to eliminate side reactions. (Author), Supersedes PAT-APPL-801 453-77, AD-D004 796.

Studies of liquid beryllium hydride synthesis have resulted in a number of new species with theoretical specific impulses approaching 330 seconds and further defined the most promising classes of this type of high-energy fuel. In general, it appears that terminators derived from higher borane fragments (e.g., B3-H7) are more advantageous than simple BH3 terminators. Liquids with B3H7 terminators exhibit high theoretical impulse and satisfactory fluidity, and unlike many BH3-terminated liquids, are not subject to reversible dissociation. The bulk of this investigation was concerned with the preparation of borane- terminated beryllium hydride (BTBH) liquids from the reaction of B4H10 with beryllium alkyls and alkylberyllium hydrides. The nature of the reaction products was dependent upon the experimental conditions. The use of B4H10/ Be(CH3)2 mole ratio of 0.5 and an extended reaction time yielded the best product, a liquid analyzing as B3H7(CH3BeH)2BeH2BH3 (specific impulse, 329 seconds with H202). The use of B2H6/B4H10 mixtures simplified the complex reactions involving pure B4H10 and solid beryllium compounds. Such mixtures increase the liquefaction rates of the beryllium compounds and also resulted in a significant decrease in the amount of B4H10 decomposition during its reactions. Ethyl-substituted BTBH liquids are synthesized. The compound B3H7- (C2H5BeH) BeH2BH3 (specific impulse, 326 seconds) remained fluid at -40C. Conditions for the quantitative reaction of Al(CH3)3 and Beane were established for the preparation of alane-terminated beryllium hydride (ATBH) liquids.

No abstract included.