CPC B01D 71/021 (2013.01) [B01D 53/228 (2013.01); B01D 67/0067 (2013.01); B01D 67/0076 (2013.01); B01D 69/141 (2013.01); B01D 71/022 (2013.01); B01D 67/0011 (2013.01)] | 14 Claims |
1. A process for separating a gas molecule from a feed gas comprised of the gas molecule and at least one other gas molecule, the process comprising:
(i) providing a carbon molecular sieve membrane comprising, carbon, a group 13 metal, and at most a trace amount of sulfur, wherein the group 13 metal is present in a reduced state, and wherein the group 13 metal is present in an amount of 0.5% to 10% by weight of the carbon molecular sieve membrane; and
(ii) flowing the gas feed through and over said carbon molecular sieve membrane to produce a first permeate stream having an increased concentration of the gas molecule and a second retentate stream having a decreased concentration of the gas molecule,
wherein the gas molecule is propylene and the at least one other gas molecule comprises ethane, and wherein the carbon molecular sieve membrane has a permeance of propylene of at least 10 GPU.
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