Saudi Arabian Oil Company

Abdulkarim Alsamah

Ali Hayek

Ahmad Abdullah Bahamdan

Garba Oloriegbe Yahaya

Seung-Hak Choi

Yasser A Shalabi

A membrane system includes a first membrane and a second membrane. At a given temperature and pressure: the first membrane has a permeation rate for a first gas and a selectivity for a gas mixture comprising the first gas a second gas different from the first gas; the second membrane has a permeation rate for the first gas and a selectivity for the gas mixture; the permeation rate of the first membrane is greater than the permeation rate of the second membrane; and the selectivity of the second membrane is greater than the selectivity of the first membrane.

Stacked membranes and their use in gas separation

A gas separation membrane is provided. The gas separation membrane includes a poly(imide-oxadiazole) polymer including an oligomer having a structure comprising: In this structure, Ar, Ar, and Arinclude aromatic moieties, and wherein Ar, Ar, and Arare each independently selected.

Poly(imide-oxadiazole) membranes for gas separation applications

Co-polyimide membranes for separating components of sour natural gas including at least three distinct moieties polymerized together, the moieties including a 2,2'-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) based moiety; a 4,4&#x2032;-(hexafluoroisopropylidene)dianiline (6FpDA) based moiety; and at least one component selected from the group consisting of: a 9,9-bis(4-aminophenyl) fluorene (CARDO) based moiety; a 2,3,5,6-tetramethyl-1,4-phenylenediamine (durene diamine) based moiety; a 2,2&#x2032;-bis(trifluoromethyl)benzidine (ABL-21) based moiety; a 3,3&#x2032;-dihydroxybenzidine based moiety; and a 3,3&#x2032;-(hexafluoroisopropylidene)dianiline based moiety.

Aromatic co-polyimide gas separation membranes derived from 6FDA-6FpDA-type homo-polyimides

Co-polyimide membranes for separating components of sour natural gas including at least three distinct moieties polymerized together, the moieties including a 2,2'-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) based moiety; a 2,4,6-trimethyl-m-phenylenediamine (DAM) based moiety; and at least one component selected from the group consisting of: a 4,4&#x2032;-(hexafluoroisopropylidene)dianiline (6FpDA) based moiety; a 9,9-bis(4-aminophenyl) fluorene (CARDO) based moiety; a 2,3,5,6-tetramethyl-1,4-phenylenediamine (durene diamine) based moiety; a 2,2&#x2032;-bis(trifluoromethyl)benzidine (ABL-21) based moiety; a 3,3&#x2032;-dihydroxybenzidine based moiety; and a 3,3&#x2032;-(hexafluoroisopropylidene)dianiline based moiety.

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Dhahran, Saudi Arabia

Abdulkarim Alsamah