Herakles

Centre National De La Recherche Scientifique

Arianegroup Sas

Joël A Renouard

Jean-Philippe Goudon

Ali Darwiche

Hélène Blanchard

Raphaël L Janot

A process for obtaining a solid form containing heat-stabilized borazane is described. The solid form is capable of generating hydrogen by thermal decomposition or by a self-maintained combustion reaction. Within the solid form containing borazane, the borazane is heat-stabilized. It has thus been heat-stabilized by making an oxidized layer at its surface.

Obtaining a solid form containing heat-stabilized borazane, said solid form, and the use thereof for generating hydrogen

The present invention relates to a method for obtaining borazane, said method being suitable for obtaining borazane containing a low level of impurities. The borazane (obtained by reaction of at least one ammonium salt with at least one alkali and/or alkaline earth metal borohydride) in solution in THF is selectively precipitated with a non-solvent. The precipitated borazane can further be purified by selective dissolution. The borazane obtained after selective precipitation and dissolution contains less than 1% by weight of impurities and/or does not exhibit exothermic decomposition in the solid state with a temperature range of the endothermic melting peak above 110&#xb0; C.

Method for obtaining borazane, suitable for obtaining highly pure and very highly pure borazane

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Saint Martin en Biere, France

Joël A Renouard