CCS and Power Systems

Carbon Capture - Post-Combustion Capture


Novel Inorganic/Polymer Composite Membranes for CO2 Capture


Performer: Ohio State University Research Foundation

Project No: FE0007632


Accomplishments


  • Inorganic membrane supports were prepared as substrates for membrane deposition, heat treatment experiments, and membrane characterization.

  • Inorganic zeolite Y seed crystals were synthesized and deposited on organic polysulfone support layers. Zeolite Y is a microporous aluminosilicate mineral with pore sizes favorable for CO2 separation.

  • Synthesized zeolite membranes were characterized by x-ray diffraction.

  • Membrane morphology was studied using transmission electron microscopy, scanning electron microscopy, and atomic force microscopy to observe surface and cross-sectional pores.

  • The first crack-free macro-porous α-Al2O3 layer on polymer supports was made. The availability of this structure will promote local high-temperature synthesis of very thin selective membranes on a polymer support in large-scale manufacturing.

  • A paper describing the techno-economic and process model for CO2 capture from coal-fired power plants was published in the Journal of Membrane Science.

  • A laboratory demonstration module of a spiral-wound membrane element was successfully fabricated and shown to attendees at the 2012 NETL CO2 Capture Technology Meeting in Pittsburgh, PA on July 9, 2012. The membrane consisted of a nanoporous polymer support deposited with an inorganic selective layer, which was covered by a PDMS top layer. This module showed that the inorganic/polymer composite membrane could be fabricated into a spiral-wound membrane element configuration.

  • OSU has imbedded an amino-group into the polymer cover layer to enhance the cumulative membrane selectivity.

  • A preliminary techno-economic analysis is under development with team member Gradient Technologies.


Project Details