Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Dual Phase Conductive CO2 Membranes: Mechanism, Microstructure, and Electrical Conductivity

Dual Phase 전도성 CO2 분리막: 메커니즘, 미세구조 및 전기전도도

  • Lee, Shi-Woo (Energy Materials Research Center, Korea Institute of Energy Research) ;
  • Yu, Ji-Haeng (Energy Materials Research Center, Korea Institute of Energy Research) ;
  • Woo, Sang-Kuk (Energy Materials Research Center, Korea Institute of Energy Research)
  • 이시우 (한국에너지기술연구원 에너지재료연구센터) ;
  • 유지행 (한국에너지기술연구원 에너지재료연구센터) ;
  • 우상국 (한국에너지기술연구원 에너지재료연구센터)
  • Published : 2007.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

Novel conductive $CO_2$ membranes composed of dual phases, molten carbonates and electronic conducting ceramics, were investigated. As the microstructure control of electronic conducting ceramic supports is extremely important to keep the molten carbonates stable in the membranes by a capillary force applied by the pore structure of the supports, we have scrutinized the microstructure of the electronic conducting supports utilizing microscopic images and gas permeability measurement. From the evaluation of the electrical conductivities of the molten carbonates and the electronic conducting ceramic supports, we found that the ionic conductivity of the molten carbonates could determine $CO_2$ flux through the dual phase membranes if the surface exchange rate were relatively high enough.

Keywords

References

  1. D. Shekhawat, D. R. Luebke, and H. W. Pennline, 'A Review of Carbon Dioxide Selective Membranes,' A Topical Report, DOE/NETL-2003/1200, 2003
  2. R. Bredesen, K. Jordal, and O. Bolland, 'High-Temperature Membranes in Power Generation with $CO_2$ Capture,' Chem. Eng. & Proc., 43 1129-58 (2004) https://doi.org/10.1016/j.cep.2003.11.011
  3. K. Sugiura, K. Takei, K. Tanimoto, and Y. Miyazaki, 'The Carbon Dioxide Concentrator by using MCFC,' J. Power Source, 118 218-27 (2003) https://doi.org/10.1016/S0378-7753(03)00084-3
  4. J. L. Weaver and J. Winnick, 'The Molten Carbonate Carbon Dioxide Concentrator: Cathode Performance at High CO2 Utilization,' J. Electrochem. Soc., 130 20-8 (1983) https://doi.org/10.1149/1.2119661
  5. S. J. Chung, D. Li, J. H. Park, J. I. Ida, I. Kumakiri, and J. Y. S. Lin, 'Dual-Phase Inorganic Metal-Carbonate Membrane for High Temperature Carbon Dioxide Separation,' Ind. Eng. Chem. Res., 44 7999-8006 (2005) https://doi.org/10.1021/ie0503141
  6. S. J. Chung, 'Dual-Phase Inorganic Membrane for High- Temperature Carbon Dioxide Separation,' pp. 70-83, M.S. thesis, Univ. of Cincinnati, Cincinnati, 2004
  7. G. Mamantov and J. Braunstein, 'Advances in Molten Salt Chemistry,' Vol. 4, pp. 159-389, Plenum Press, New York, 1981
  8. Y. S. Lin and A. J. Burggraaf, 'Experimental Studies on Pore Size Change of Porous Ceramic Membranes after Modification,' J. Membrane Sci., 79 65-82 (1993) https://doi.org/10.1016/0376-7388(93)85018-R