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1. (WO1999006138) CO2-SELECTIVE MEMBRANE PROCESS AND SYSTEM FOR REFORMING A FUEL TO HYDROGEN FOR A FUEL CELL

Pub. No.:    WO/1999/006138    International Application No.:    PCT/US1998/015928
Publication Date: Feb 11, 1999 International Filing Date: Jul 28, 1998
IPC: B01D 53/22
B01D 67/00
B01D 69/14
C01B 3/48
C01B 3/50
Applicants: EXXON RESEARCH AND ENGINEERING COMPANY
Inventors: HO, Win-Sow, Winston
Title: CO2-SELECTIVE MEMBRANE PROCESS AND SYSTEM FOR REFORMING A FUEL TO HYDROGEN FOR A FUEL CELL
Abstract:
The present invention provides a CO2-selective membrane process that is useful for the purification and/or water gas shift reaction of a reformed gas, generated from on-board reforming of a fuel, e.g., hydrocarbon, gasoline, diesel, methanol or natural gas, to hydrogen for fuel cell vehicles. Another embodiment of the present invention is directed toward a composition comprising a hydrophylic polymer and at least one ammonium halide salt, the ammonium halide salt being present in an amount ranging from about 10 to 80 wt. % based on the total weight of the composition. The composition is suitable in formation of a membrane useful for separating CO2 from a CO2-containing gas, particularly from an on-board reformed gas for the CO2-selective membrane process.