| Attributs | Valeurs |
|---|
| type
| |
| Is Part Of
| |
| Subject
| |
| Title
| - Preparation of Ammonia Borane in High Yield and Purity, Methanolysis,and Regeneration
|
| has manifestation of work
| |
| related by
| |
| Author
| |
| Abstract
| - Ammonia borane (AB) is emerging as a promising solid hydrogen carrier, particularly for power generation inportable devices that employ proton-exchange membrane fuel cells. A preparative-scale synthesis of AB fromsodium borohydride and ammonium salts in high yields (≥95%) and very high purity (≥98%) has been described.The first systematic study of a transitional metal-catalyzed alcoholysis of AB, comparison of the methanolysis tothe hydrolysis of AB, and regeneration of AB from ammonium tetramethoxyborate also has been described.
- A practical procedure for the large-scale preparation of ammonia borane from sodium borohydride and ammonium formate in near-quantitative yield is reported. A transition metal-catalyzed methanolysis of ammonia borane is carried out to generate 3 equiv of hydrogen. A comparison of the transition metal-catalyzed hydrolysis and methanolysis of AB has been made. The intermediate ammonium tetramethoxyborate from methanolysis has been isolated and characterized, and ammonia borane has been regenerated.
|
| article type
| |
| is part of this journal
| |
