Method for storage and release of hydrogen
AssigneeYissum Research Development Company of the Hebrew University of Jerusalem
InventorsYoel Sasson, Harold Wiener, Ariel Givant
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Abstract
The invention provides a process for the production of hydrogen, comprising catalytically decomposing a concentrated aqueous solution of potassium formate in a reaction vessel to form bicarbonate slurry and hydrogen, discharging the hydrogen from said reaction vessel, and treating a mixture comprising the bicarbonate slurry and the catalyst with an oxidizer, thereby regenerating the catalyst. Pd/C catalysts useful in the process are also described.
Claims17
A process for the production of hydrogen, comprising catalytically decomposing a concentrated aqueous solution of potassium formate in a reaction vessel to form bicarbonate slurry and hydrogen, discharging the hydrogen from said reaction vessel, and treating a mixture comprising the bicarbonate slurry and the catalyst with an oxidizer, thereby regenerating the catalyst.
A process for storage and subsequent release of hydrogen, comprising:
- (i) catalytically hydrogenating in a reaction vessel potassium bicarbonate slurry to form a concentrated aqueous solution of potassium formate;
- (ii) catalytically decomposing said formate solution in a reaction vessel to form bicarbonate slurry and hydrogen;
- (iii) discharging the hydrogen from said reaction vessel;
- and
- (iv) treating a mixture comprising the bicarbonate slurry and the catalyst with an oxidizer, thereby regenerating said catalyst.
A process for the storage of hydrogen, comprising treating a mixture of potassium bicarbonate slurry and a catalyst with an oxidizer, and catalytically reducing said bicarbonate slurry in a reaction vessel to form a concentrated aqueous solution of potassium formate.
A process comprising subjecting a potassium bicarbonate slurry, in admixture with catalyst particles, to heterogeneous catalytic hydrogenation of potassium bicarbonate to form potassium formate.
A power system comprising at least one fuel cell and a hydrogen-generating unit for delivering hydrogen to the anodic compartment of said fuel cell, said hydrogen-generating unit comprising a catalyst-containing composition capable of reversible catalytic hydrogenation and dehydrogenation, which composition is in the form of potassium bicarbonate slurry and a concentrated aqueous potassium formate solution, respectively, wherein said hydrogen-generating unit is provided with a first feed line for introducing an incoming hydrogen stream for hydrogenating said poatassium carbonate slurry and a second feed line for introducing an oxidizer into said reaction vessel for regenerating said catalyst, and a discharge line for directing a hydrogen stream generated on dehydrogenating said potassium formate solution to said fuel cell.
Dependencies are inferred from the claim text.