Porous inorganic membrane containing carbon; a process for its preparation; and use thereof
AssigneeInstitute Francais du Petrole
InventorsChristophe Chau, Denis Uzio
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Abstract
A porous inorganic membrane comprises at least one inorganic phase having separating properties. Said membrane has a carbon content representing 0.05% to 25% by weight with respect to the mass of said inorganic phase and is selective to non-condensable gases. It is obtained by means of a selectivation treatment of a porous carbon-free inorganic membrane using a hydrocarbon feed. It is used in processes for separating non-condensable molecules such as hydrogen, and in association with a catalyst in a catalytic membrane reactor.
Claims13
A porous inorganic membrane having an external face and internal face, comprising at least one inorganic phase having separating properties, wherein the membrane has a carbon content representing 0.05% to 25% by weight with respect to the mass of said inorganic phase and in that the carbon is distributed in the pores of the membrane in an increasing graduated manner, so that the carbon content represents 1% to 3% by weight with respect to the mass of the first third of the inorganic phase having separating properties, 6% to 8% by weight with respect to the mass of the second third of the inorganic phase having separating properties and 15% to 20% by weight with respect to the mass of the third of the inorganic phase having separating properties, and provided that the membrane is free of any type of catalytic element in its porous network.
Dependencies are inferred from the claim text.