Microporous carbons for fuel gas storage

B - Operations – Transporting – 01 – J

Patent

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B01J 20/20 (2006.01)

Patent

CA 2229867

A method of making a microporous carbon material which includes providing a precursor selected from the group consisting of crystalline salts of aromatic sulfonates and nonporous polymeric salts. Heat treatment of such precursors in the temperature range of 350 to 850 ~C in an inert oxygen free atmosphere for a sufficient time promotes thermally induced hydrogen abstraction and rearrangement of BSUs which result in the formation of a carbonaceous microporous material having a pore size distribution in the range of about 4- 15 .ANG.. The structural and storage characteristics of the microporous carbon materials are also disclosed.

La présente invention concerne un procédé de réalisation d'un matériau microporeux en carbone à partir d'un précurseur appartenant au groupe des sels cristallins de sulfonates aromatiques et des sels polymères non poreux. Le traitement thermique de tels précurseurs dans une plage de températures de 350 à 850 ·C sous atmosphère inerte exempte d'oxygène, pendant une durée suffisante, favorise l'abstraction thermiquement induite de l'hydrogène et la réorganisation des unités structurelles de base (BSU), ce qui aboutit à la formation d'un matériau carboné microporeux caractérisé par une distribution de la grosseur des pores dans une plage d'environ 4 à 15 .ANG.. L'invention concerne également les caractéristiques structurelles et de stockage des matériaux microporeux en carbone.

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