Ammonia-borane and related compounds as dihydrogen sources.

Hydrogen storage for transportation applications requires high volumetric and gravimetric storage capacity. B-N compounds are well suited as storage materials due to their light weight and propensity for bearing multiple protic (N-H) and hydridic (B-H) hydrogens. This critical review briefly covers the various methods of hydrogen storage, and then concentrates on chemical hydrogen storage using B-N compounds. The simplest B-N compound, ammonia borane (H3NBH3), which has a potential 19.6 wt% hydrogen storage capacity, will be emphasised (127 references).

B–N compounds for chemical hydrogen storage

Ammonia–borane, H3NBH3, is an intriguing molecule for chemical hydrogen storage applications. With both protic N–H and hydridic B–H bonds, three H atoms per main group element, and a low molecular weight, H3NBH3 has the potential to meet the stringent gravimetric and volumetric hydrogen storage capacity targets needed for transportation applications. Furthermore, devising an energy-efficient chemical process to regenerate H3NBH3 from dehydrogenated BNHx material is an important step towards realization of a sustainable transportation fuel. In this perspective we discuss current progress in catalysis research to control the rate and extent of hydrogen release and preliminary efforts at regeneration of H3NBH3.

Ammonia-borane: the hydrogen source par excellence?

Amine- and phosphine-borane adducts: new interest in old molecules.

Thermal decomposition of B–N–H compounds investigated by using combined thermoanalytical methods

Infrared matrix isolation characterization of aminoborane and related compounds

Infrared matrix isolation study of the reaction of diborane with the methylamines

Matrix isolation study of the mechanism of the reaction of diborane with ammonia : pyrolysis of the H3B.NH3 adduct

Matrix isolation study of the reaction of diborane with hydrogen sulfide: spectroscopic characterization of mercaptoborane, H2BSH

Merged jet copyrolysis of mixtures of Ar/B 2 H 6 and Ar/CH 3 OH followed by trapping into a cryogenic matrix has led to the formation, isolation, and characterization of methoxyborane, H 2 B=OCH 3 . The same product was observed in lesser yield following merged jet copyrolysis of B 2 H 6 and (CH 3 ) 2 O; ethoxyborane was detected following copyrolysis of mixtures of B 2 H 6 and C 2 H 5 OH in argon

John D. Carpenter

Papers

Infrared matrix isolation characterization of aminoborane and related compounds

Infrared matrix isolation study of the reaction of diborane with the methylamines

Matrix isolation study of the mechanism of the reaction of diborane with ammonia : pyrolysis of the H3B.NH3 adduct

Matrix isolation study of the reaction of diborane with hydrogen sulfide: spectroscopic characterization of mercaptoborane, H2BSH

Matrix isolation study of the reaction of diborane with methanol: spectroscopic characterization of methoxyborane, H2B=OCH3