Patent ID: 7255725
Filing Date: 2007-08-14
Classification: B01D,B01J,C01B

Abstract:
1. 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.