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Process for synthesis of ammonia borane for bulk hydrogen storage

Patent ·
OSTI ID:1016556
 [1];  [2];  [2];  [2];  [2]
  1. West Richland, WA
  2. Richland, WA
+ Show Author Affiliations
The present invention discloses new methods for synthesizing ammonia borane (NH.sub.3BH.sub.3, or AB). Ammonium borohydride (NH.sub.4BH.sub.4) is formed from the reaction of borohydride salts and ammonium salts in liquid ammonia. Ammonium borohydride is decomposed in an ether-based solvent that yields AB at a near quantitative yield. The AB product shows promise as a chemical hydrogen storage material for fuel cell powered applications.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC06-76RL01830
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Number(s):
7,897,129
Application Number:
US Patent Application 12/431,496
OSTI ID:
1016556
Country of Publication:
United States
Language:
English

References (11)

Kinetics of the reaction of ammonium ion with hydroborate ion in liquid ammonia journal September 1975
Non-hydride systems of the main group elements as hydrogen storage materials journal April 2007
Synthesis of ammonia borane for hydrogen storage applications journal January 2008
Chemical Evidence for the Structure of the “Diammoniate of Diborane.” II. The Preparation of Ammonia-Borane journal January 1958
Preparation of Ammonia Borane in High Yield and Purity, Methanolysis, and Regeneration journal September 2007
Conversion of dihydridodiammineboron(III) borohydride to ammonia-borane without hydrogen evolution journal August 1973
Ammonium borohydride-a novel, hydrogen-rich material for polarized targets conference January 1982
Large Scale Synthesis of H 2 B(NH 3 ) 2 +BH 4 - and H 3 NBH 3 journal June 1964
Symmetrical cleavage of diborane by ammonia in solution journal April 1972
The Preparation and Properties of Hexamminecobalt(III) Borohydride, Hexamminechromium(III) Borohydride and Ammonium Borhydride 1 journal January 1958
THE CRYSTALLINE COMPOUND AMMONIA-BORANE, 1 H 3 NBH 3 journal November 1955

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Related Subjects

08 HYDROGEN
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY