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Chen, Yuanxin Ph.D.pdf (4.29 MB)

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POLYMER MEMBRANES FOR FLUE GAS CARBON CAPTURE AND FUEL CELL APPLICATION

Chen, Yuanxin
http://rave.ohiolink.edu/etdc/view?acc_num=osu1440069742

Abstract Details

2015, Doctor of Philosophy, Ohio State University, Chemical Engineering.
Polymer membrane is a cost-effective and energy-efficient approach for separation and fuel cell applications. In this research, two types of polymer membranes were synthesized for different applications. The first type is CO2-selective membranes for carbon capture from flue gas, and the second type is hydroxide-exchange membranes for alkaline fuel cell application. CO2 separation from flue gas streams is one of the most important solutions to greenhouse gas driven climate change. In this research, two types of CO2-selective polymer membranes were synthesized: (1) ethylene oxide (EO)-based membranes and (2) amine-based membranes. The former is based on the solution-diffusion transport mechanism, while the latter is based on the facilitated transport mechanism. For the membranes containing EO groups, membranes were synthesized with polyamide-polyethyleneoxide (PA-PEO) copolymer blended with poly(ethylene glycol) dimethyl ether (PEG-DME) or polyethylene glycol (PEG). For the membranes containing amino groups, a high-molecular-weight polyamine was successfully synthesized. Selected aminoacid salts were incorporated into the polyamine solution for membrane preparation. The polyamine served as the fixed-site carrier, whereas the aminoacid salts acted as mobile carriers. Both types of membrane have shown promising results for CO2/N2 separation from flue gas. Alkaline fuel cells (AFC) has received increasing attention nowadays because they enable non-precious metals to replace the platinum as the catalyst, and they have the potential to offer fuel flexibility, reduce fuel crossover and prevent carbonate precipitation. Current research about alkaline fuel cell membranes mostly focused on quaternary ammonium-based polymer membranes. However, these membranes have shown low ionic conductivity and, poor chemical and thermal stability. Ionic liquids are organic molten electrolytes which have ideal conductivity, excellent thermal and chemical stability. In this research, ionic liquids were incorporated into polybenzimidazole (PBI) and crosslinked polyvinylalcohol (PVA) polymer matrixes to prepare hydroxide-exchange membranes (HEMs).
W.S. Winston Ho (Advisor)
Stuart Cooper (Committee Member)
Nicholas Brunelli (Committee Member)
206 p.
Chemical Engineering
polymer membrane; CO2-selective membrane; solution-diffusion membrane; facilitated transport membrane; carbon capture; hydroxide-exchange membrane; ionic liquid

Recommended Citations

Citations

  • Chen, Y. (2015). POLYMER MEMBRANES FOR FLUE GAS CARBON CAPTURE AND FUEL CELL APPLICATION [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440069742

    APA Style (7th edition)

  • Chen, Yuanxin. POLYMER MEMBRANES FOR FLUE GAS CARBON CAPTURE AND FUEL CELL APPLICATION. 2015. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1440069742.

    MLA Style (8th edition)

  • Chen, Yuanxin. "POLYMER MEMBRANES FOR FLUE GAS CARBON CAPTURE AND FUEL CELL APPLICATION." Doctoral dissertation, Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440069742

    Chicago Manual of Style (17th edition)

osu1440069742
416
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This open access ETD is published by The Ohio State University and OhioLINK.