Ultrathin film composite membrane separation of CO2 from natural gas. Final report, April 1, 1992-March 31, 1993

Technical Report · Wed Sep 01 00:00:00 EDT 1993

OSTI ID:5500661

Martin, C R

Investigations of the rate and selectivity of gas transport in the electronically conductive polymer polyaniline are described. Both rate and selectivity were found to be dependent on doping level. Permeability coefficients for all gases studied decreased with increasing doping level, and selectivity coefficients, in general, increased with doping level. The effects of other variables, including nature of the counterion and temperature and duration of thermal processing of the film, were also explored. Both free-standing polyaniline films (ca 25 micrometers thick) and thin film composite membranes based on polyaniline were studied. The thin film composites were prepared by coating the polyaniline film (ca. 3 micrometers thick) onto the surface of a microporous alumina support membrane. The free-standing and thin film composite membranes showed identical rates and selectivities of gas-transport.

• Research Organization: Colorado State Univ., Fort Collins, CO (United States). Dept. of Chemistry
• OSTI ID: 5500661
• Report Number(s): PB-94-117942/XAB; CNN: GRI-5092-260-2376
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
CARBON DIOXIDE
SEPARATION PROCESSES
MEMBRANES
PERMEABILITY
NATURAL GAS
POLYCYCLIC AROMATIC AMINES
THIN FILMS
AMINES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ENERGY SOURCES
FILMS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
030800* - Natural Gas- Environmental Aspects