Abstract: A method for synthesizing ammonia borane includes (a) preparing a reaction mixture in one or more solvents, the reaction mixture containing sodium borohydride, at least one ammonium salt, and ammonia; and (b) incubating the reaction mixture at temperatures between about 0° C. to about room temperature in an ambient air environment under conditions sufficient to form ammonia borane. Methods for synthesizing ethylenediamine bisborane, and methods for dehydrogenation of ethylenediamine bisborane are also described.

Abstract: The present invention describes the synthesis of a family of metal bis(borano) hypophosphite complexes. One procedure described in detail is the syntheses of complexes beginning from phosphorus trichloride and sodium borohydride. Temperature, solvent, concentration, and atmosphere are all critical to ensure product formation. In the case of sodium bis(borano) hypophosphite, hydrogen gas was evolved upon heating at temperatures above 150° C. Included in this family of materials are the salts of the alkali metals Li, Na and K, and those of the alkaline earth metals Mg and Ca. Hydrogen storage materials are possible. In particular the lithium salt, Li[PH2(BH3)2], theoretically would contain nearly 12 wt % hydrogen. Analytical data for product characterization and thermal properties are given.

Abstract: Complex hydrides based on Al(BH4)3 are stabilized by the presence of one or more additional metal elements or organic adducts to provide high capacity hydrogen storage material.

Abstract: Disclosed herein is a method for preparing magnesium borohydride. The method includes the step of reacting a metal borohydride with a metal salt composition in a solvent, to form a reaction mixture. The metal salt composition comprises at least one magnesium salt. The metal borohydride and the metal salt composition are insoluble in the solvent. The method further includes the step of grinding the reaction mixture to produce a composition that includes magnesium borohydride; and removing the solvent from the composition. Another embodiment of this invention relates to a new material. The material is an orthorhombic crystal phase of magnesium borohydride.

Abstract: Metal aminoboranes of the formula M(NH2BH3)n have been synthesized. Metal aminoboranes are hydrogen storage materials. Metal aminoboranes are also precursors for synthesizing other metal aminoboranes. Metal aminoboranes can be dehydrogenated to form hydrogen and a reaction product. The reaction product can react with hydrogen to form a hydrogen storage material. Metal aminoboranes can be included in a kit.

Abstract: A process is described for the preparation of magnesium borohydride having a high purity and crystallinity, which comprises the reaction of an orgenometallic compound of magnesium of the type MgX2, wherein X is an organic binder selected from alkyl, amide, alkoxide, cyclopentadienyl, aryl, with a derivative of a boron hydride, in a hydrocarbon solvent.

Abstract: The disclosure relates to new compositions comprising an, B12FxH12-x? anion that may be prepared chemically or electrochemically by oxidation of B12FxH12-x2? salts. This anion can be generated electrochemically in a voltammetry experiment, or by chemically by treatment of the (2?) anions with powerful oxidants such as XeF2 or NO2(+) salts. The new compositions can be used as 1 electron chemical oxidants and in electrochemical cells such as lithium ion batteries where their fomation at elevated potential can serve to limit the upper limit of voltage during the overcharge of such a cell.

Abstract: A process for producing borazane from boron-nitrogen and boron-nitrogen-hydrogen containing BNH-waste products. The process includes reacting the BNH-waste products with a hydrogen halide, having the formula HX, wherein X is selected from the group consisting of F, Cl, Br, I, and combinations thereof, to form any of the following: a boron trihalide, having the formula BX3, an ammonium halide, having the formula NH4X, and hydrogen. The boron trihalide is then reacted with the hydrogen to form diborane, having the formula B2H6, and hydrogen halide. The ammonium halide is then converted to ammonia, having the formula NH3, and hydrogen halide. The diborane is then reacted with the ammonia to form borazane, having the formula BH3NH3.

Abstract: Disclosed herein is a method comprising reacting a metal borohydride with a metal chloride composition that comprises magnesium chloride in a solvent to form a reaction mixture; wherein either the metal borohydride, the metal chloride composition or both the metal borohydride and the metal chloride composition are soluble in the solvent and a formed metal chloride is insoluble in the solvent; removing the solvent from the reaction mixture to produce a borohydride complex; treating the borohydride complex to obtain magnesium borohydride; extracting magnesium borohydride solvate; and desolvating the magnesium borohydride solvate to form magnesium borohydride.

Abstract: A process for the preparation of lithium borohydride by reaction of lithium hydride with boron trifluoride is described, in which lithium hydride is reacted with boron trifluoride in a molar ratio LiH:BF3 of >4.1:1, the reaction being carried out in an ethereal solvent whose boiling point at normal pressure is at least 50° C., and at temperatures of at least 10° C.

Abstract: The present invention relates to a method of making lithium borohydride that gives high yields while maintaining ease of purification.

Abstract: The present invention relates to a method of making lithium borohydride that gives high yields while maintaining ease of purification.

Abstract: Processes for synthesizing borohydride compounds with reduced energy requirements are disclosed.

Abstract: Highly iodinated borane and carborane cage molecules, having from 60% to 90% w/w iodine, are disclosed as new and useful X-ray contrast media when combined with a pharmaceutically acceptable carrier. The inclusion of appropriate functional group substituents, such as hydrophilic moieties, increases solubility and lowers toxicity.

Abstract: Metal or metal boride films are deposited by CVD using a metal borane cluster compound as a precursor. For a nickel film, NiCl.sub.2 is vaporized in a reactor tube in the presence of B.sub.10 H.sub.14 or another polyborane. For an aluminum film, Al(BH.sub.4).sub.3 is formed by reacting AlCl.sub.3 with NaBH.sub.4, and using the Al(BH.sub.4).sub.3 as a precursor borane cluster compound. The substrate is heated to a selected temperature so that the deposited film has a controlled stoichiometry of metal and boron.

Abstract: The invention relates to the synthesis of ammonia-haloboranes, and in particular, H.sub.3 NBH.sub.2 Cl, which materials are useful for the produciton of amorphous boron nitride and crystalline turbostratic boron nitride by heating.

Abstract: A method of producing platelets of refractory metal borides and the platelets so-produced. The method involves reacting an oxide of a refractory metal or a precursor thereof and B.sub.2 O.sub.3 or a precursor thereof with carbon or a carbon precursor in the presence of a small amount of an alkali metal oxide, such as sodium oxide or potassium oxide, or a precursor. The reaction should take place under an atmosphere of an inert (non-reactive) gas. The alkali metal oxide allows the reaction temperature to be brought below 1800.degree. C., which reduces impurities in the product, and affects the shape of the particulate boride product, resulting in the formation of platelets. The carbon used in the reaction is preferably derived from calcined anthracite coal or petroleum coke because such carbon sources permit the reaction to be carried out at lower temperatures. The platelets of the refractory metal borides so-produced can be used as reinforcements for ceramic or metal matrix composites or for other purposes.

Abstract: A method of precipitating calcium borates from an aqueous mixture of calcium chloride and borax is disclosed. The yield of calcium borate precipitates can be increased by increasing the concentration of borax. Preferably, an increase in the calcium concentration also is employed. In general, it was found that properties of compacted glass batch produced from these calcium borates compare favorably with those compacted from standard glass batches.

Abstract: The tetradecahydroundecaborate(-1) anion is synthesized from a metal borohydride by heating a suspension of the borohydride ion in a solvent, such as diglyme, with agitation at a temperature of from 85.degree. C. to about 135.degree. C. and adding an alkyl halide. The B.sub.11 H.sub.14.sup.- anion obtained is useful in the synthesis of decaborane, an intermediate in formation a carborane-based polymers.

Abstract: Tetradecahydroundecaborate compounds, MB.sub.11 H.sub.14, wherein M represents a monovalent cation are prepared by the reaction of the corresponding octahydroborate compounds, MB.sub.3 H.sub.8, with boron trifluoride. The reaction is carried out at a temperature of 100.degree. C. to 120.degree. C., preferably in an inert solvent medium.

Abstract: This invention provides a method for the recycling of lithium borate to lithium borohydride which can be reacted with water to generate hydrogen for utilization as a fuel. The lithium borate by-product of the hydrogen generation reaction is reacted with hydrogen chloride and water to produce boric acid and lithium chloride. The boric acid and lithium chloride are converted to lithium borohydride through a methyl borate intermediate to complete the recycle scheme.