Solid compositions which generate hydrogen by combustion, comprising an alkali metal borohydride or alkaline earth metal borohydride and an oxidizing salt based on ammonium perchlorate, alkali metal perchlorate or alkaline earth metal perchlorate
First Claim
1. Solid composition which can decompose with the generation of hydrogen according to a self-sustaining combustion reaction after initiation of this reaction by an appropriate heat source, characterized in that the said composition comprises an alkali metal borohydride or alkaline earth metal borohydride and a perchlorate-based oxidizing salt corresponding to the general formula XClO4 in which X represents the NH4 group, an alkali metal or an alkaline earth metal.
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Abstract
The invention relates to a solid composition which can decompose with the generation of hydrogen according to a self-sustaining combustion reaction after initiation of this reaction by an appropriate heat source, this composition being characterized in that it comprises an alkali metal borohydride or alkaline earth metal borohydride and a perchlorate-based oxidizing salt corresponding to the general formula XClO4 in which X represents the NH4 group, an alkali metal or an alkaline earth metal.
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Citations
13 Claims
- 1. Solid composition which can decompose with the generation of hydrogen according to a self-sustaining combustion reaction after initiation of this reaction by an appropriate heat source, characterized in that the said composition comprises an alkali metal borohydride or alkaline earth metal borohydride and a perchlorate-based oxidizing salt corresponding to the general formula XClO4 in which X represents the NH4 group, an alkali metal or an alkaline earth metal.
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11. Process for the generation of hydrogen by self-sustaining combustion of a solid composition comprising an alkali metal borohydride or alkaline earth metal borohydride and a perchlorate-based oxidizing salt, characterized in that:
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a pulverulent or granular homogeneous solid composition comprising an alkali metal borohydride or alkaline earth metal borohydride and a perchlorate-based oxidizing salt of general formula XClO4 in which X represents an NH4 group, an alkali metal or an alkaline earth metal is prepared, this composition is subsequently agglomerated using appropriate means, so as to form a compact material, the compact material is placed in a combustion chamber, the combustion of the compact material is initiated using an appropriate heat source, which brings about the self-sustaining combustion of the material with generation of hydrogen up to the end of the combustion.
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Specification