申请人:Pez Peter Guido
公开号:US20050002857A1
公开(公告)日:2005-01-06
Processes are provided for the storage and release of hydrogen by means of a substantially reversible catalytic hydrogenation of extended pi-conjugated substrates which include large polycyclic aromatic hydrocarbons, polycyclic aromatic hydrocarbons with nitrogen heteroatoms, polycyclic aromatic hydrocarbons with oxygen heteroatoms, polycyclic aromatic hydrocarbons with alkyl, alkoxy, nitrile, ketone, ether or polyether substituents, pi-conjugated molecules comprising 5 membered rings, pi-conjugated molecules comprising six and five membered rings with nitrogen or oxygen hetero atoms, and extended pi-conjugated organic polymers. The hydrogen, contained in the at least partially hydrogenated form of the extended pi-conjugated system, can be facilely released for use by a catalytic dehydrogenation of the latter in the presence of a dehydrogenation catalyst which can be effected by lowering the hydrogen gas pressure, generally to pressures greater than 0.1 bar or raising the temperature to less than 250° C. or less, or by a combination of these two process parameters.
本发明提供了通过对扩展的π-共轭基质进行基本可逆的催化加氢来储存和释放氢气的工艺、具有烷基、烷氧基、腈基、酮基、醚基或聚醚基取代基的多环芳香烃,由 5 个成员环组成的π-共轭分子,由具有氮或氧杂质原子的 6 个和 5 个成员环组成的π-共轭分子,以及扩展的π-共轭有机聚合物。扩展π-共轭体系的至少部分氢化形式中含有的氢,可以在脱氢催化剂的存在下,通过催化脱氢反应方便地释放出来,脱氢反应可以通过降低氢气压力(一般压力大于 0.1 巴)或将温度升高到低于 250 摄氏度或更低,或通过这两种工艺参数的组合来实现。