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    • 13. 发明授权
    • Hydrogen storage by reversible hydrogenation of pi-conjugated substrates
    • 通过π-共轭底物的可逆氢化来储存氢
    • US07101530B2
    • 2006-09-05
    • US10430246
    • 2003-05-06
    • Guido P. PezAaron R. ScottAlan C. CooperHansong Cheng
    • Guido P. PezAaron R. ScottAlan C. CooperHansong Cheng
    • C01B3/00F17C11/00
    • C01B3/0015Y02E60/328
    • 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, 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.
    • 提供了通过扩展的π-共轭底物的基本可逆的催化氢化来提供氢的方法,其包括大的多环芳烃,具有氮杂原子的多环芳烃,具有氧杂原子的多环芳烃,具有烷基的多环芳烃 烷氧基,酮,醚或聚醚取代基,包含5元环的π-共轭分子,包含具有氮或氧杂原子的六元和五元环的π-共轭分子和延伸的π-共轭有机聚合物。 包含在延伸的π-共轭体系的至少部分氢化形式中的氢可以通过在脱氢催化剂的存在下通过催化脱氢来容易地释放使用,所述脱氢催化剂可以通过降低氢气压力来实现, 通常压力大于0.1巴或将温度升高到小于250℃或更低,或通过这两个工艺参数的组合。
    • 18. 发明授权
    • Titanium complexes with nitrogen
    • 钛与钛配合物
    • US4024169A
    • 1977-05-17
    • US636197
    • 1975-11-28
    • Guido P. Pez
    • Guido P. Pez
    • C07F7/28C07F17/00
    • C07F17/00C07F7/28
    • Complexes of the titanium cyclopentadienyl compound ##STR1## and nitrogen, having the probable structure: ##STR2## where the symbol N.apprxeq.N represents a bonding state intermediate between the azo-N=N- bond and the hydrazine =N-N= bond; such complex having the simple dimeric form as indicated by molecular weight determination on this form dissolved in tetrahydrofuran, and having a polymeric form wherein a nitrogen atom of one molecule of the dimeric form is coordinated by a dative link with a Ti atom of another molecule of the dimeric form, as suggested by low solubility of this polymeric form in 1,2-dimethoxyethane and breakdown of this form to the dimeric form by action of tetrahydrofuran.Another related complex is a black solid nitrogen-containing reaction product of the above titanium cyclopentadienyl compound in dry state with nitrogen at about 60 atmospheres pressure, having an infrared spectrum typical of a metallocene compound with no N-N or Ti-N vibration absorption bands.The nitrogen in these complexes is reactive, e.g. with reducing agents such as potassium naphthalene, to afford ammonia. Moreover, the complexes are catalytically active for hydrocarbon conversions such as conversion of ethylene to ethane, butane, 1-butene and 1,3-butadiene.
    • 具有可能结构的钛环戊二烯基化合物< IMAGE>和氮的配合物:其中符号N APPROX N表示偶氮-N = N-键和肼= N-N =键之间的键合状态; 这种复合物具有简单的二聚体形式,如该形式的分子量测定所示,溶解在四氢呋喃中,并且具有聚合形式,其中一个分子二聚体形式的氮原子与另一个分子的Ti原子 这种二聚体形式,如该聚合物形式在1,2-二甲氧基乙烷中的低溶解度所示,并且通过四氢呋喃的作用将该形式分解成二聚体形式。