Patent ID: 7101530
Filing Date: 2006-09-05
Classification: C01B,Y02E

Abstract:
1. A process for the storage and subsequent release of hydrogen comprising: a) contacting hydrogen, in the presence of a hydrogenation catalyst under hydrogenation conditions, with an extended pi-conjugated substrate that comprises at least one member selected from the group consisting of: polycyclic aromatic hydrocarbons having at least four rings, polycyclic aromatic hydrocarbons with at least one of nitrogen or oxygen heteroatoms, pi-conjugated aromatic molecules comprising five membered rings, pi-conjugated aromatic molecules comprising six and five membered rings with at least one of nitrogen or oxygen heteroatoms in the five membered ring structure, polycyclic aromatic hydrocarbons with ketone groups in the ring structure, and pi-conjugated organic oligomers, to effect storage of hydrogen by forming an at least partially hydrogenated extended pi-conjugated substrate; and thereafter b) contacting the at least partially hydrogenated extended pi-conjugated substrate under dehydrogenation conditions in the presence of an effective amount of a dehydrogenation catalyst to release hydrogen from the at least partially hydrogenated extended pi-conjugated substrate.