Patent ID: 7842276

Claim:
A hydrogen gas generation device consisting of, in combination: a container for an alkaline solution having an inlet for borohydride tablets that dissolve to form a borohydride solution; an immobilized organic pigment catalyst selected from the group consisting of pyranthrenedione, indanthrene gold orange, ditridecyl-3,4,9,10-perylenetetracarboxylic diimide, indanthrene black, dimethoxy violanthrone, 1,4-diketopyrrolo-3,4C pyrrole, quinacridone, indanthrene yellow, 3,4,9,10-perylenetetracarboxylic dianhydride, isoviolanthrone, and perylenetetracarboxylic diimide, in the form of a solid, loose powder immobilized on a substrate selected from the group consisting of ceramics, cements, glass, zeolites, perovskites, fibers, fibrous material, mesh, polymeric resin and plastic, fastened on the end of an armature which is manipulated so that the immersion depth of the catalyst into the borohydride solution is varied to expand the total area that is performing the hydrogen gas evolving borohydride decomposition reaction represented by the equation, BH 4 − +2H 2 O→BO 2 − +4H 2 ; and an outlet for hydrogen gas produced from the organic pigment catalyzed reaction.